Add podman support

Adds support for Podman as an alternative container engine. This builds
on the support added in kolla-ansible in the 2023.2 cycle.

Change-Id: I2c6befbdda7e684228065103feea7250a0ea3826

ansible/action_plugins/kayobe_container.py

@@ -0,0 +1,25 @@
+from ansible.plugins.action import ActionBase
+
+_engine_to_module = {
+   'docker': 'community.docker.docker_container',
+   'podman': 'containers.podman.podman_container'
+}
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+        super(ActionModule, self).run(tmp, task_vars)
+        module_args = self._task.args.copy()
+        engine = task_vars.get("container_engine", "docker")
+        if engine == "podman":
+            auto_remove = module_args.pop('cleanup', None)
+            if auto_remove:
+                module_args["auto_remove"] = True
+            # TODO(wszumski): Drop unsupported arguments. In the future
+            # we could emulate these options.
+            module_args.pop('timeout', None)
+            module_args.pop('comparisons', None)
+        module = _engine_to_module.get(engine)
+        module_return = self._execute_module(module_name=module,
+                                             module_args=module_args,
+                                             task_vars=task_vars, tmp=tmp)
+        return module_return

ansible/action_plugins/kayobe_container_image.py

@@ -0,0 +1,28 @@
+from ansible.errors import AnsibleError
+from ansible.plugins.action import ActionBase
+
+_engine_to_module = {
+   'docker': 'community.docker.docker_image',
+   'podman': 'containers.podman.podman_image'
+}
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+        super(ActionModule, self).run(tmp, task_vars)
+        module_args = self._task.args.copy()
+        engine = task_vars.get("container_engine", "docker")
+        if engine == "podman":
+            # Translate from docker args
+            source = module_args["source"]
+            if source == "build":
+                module_args["state"] = "build"
+            elif source == "pull":
+                module_args["pull"] = True
+            else:
+                raise AnsibleError(f'Unsupported source parameter: {source}')
+            del module_args["source"]
+        module = _engine_to_module.get(engine)
+        module_return = self._execute_module(module_name=module,
+                                             module_args=module_args,
+                                             task_vars=task_vars, tmp=tmp)
+        return module_return

ansible/action_plugins/kayobe_container_image_info.py

@@ -0,0 +1,17 @@
+from ansible.plugins.action import ActionBase
+
+_engine_to_module = {
+   'docker': 'community.docker.docker_image_info',
+   'podman': 'containers.podman.podman_image_info'
+}
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+        super(ActionModule, self).run(tmp, task_vars)
+        module_args = self._task.args.copy()
+        engine = task_vars.get("container_engine", "docker")
+        module = _engine_to_module.get(engine)
+        module_return = self._execute_module(module_name=module,
+                                             module_args=module_args,
+                                             task_vars=task_vars, tmp=tmp)
+        return module_return

ansible/action_plugins/kayobe_container_login.py

@@ -0,0 +1,24 @@
+from ansible.plugins.action import ActionBase
+
+_engine_to_module = {
+   'docker': 'community.docker.docker_login',
+   'podman': 'containers.podman.podman_login'
+}
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+        super(ActionModule, self).run(tmp, task_vars)
+        module_args = self._task.args.copy()
+        engine = task_vars.get("container_engine", "docker")
+        module = _engine_to_module.get(engine)
+        if engine == "podman":
+            # Drop unspported arguments
+            module_args.pop("reauthorize", None)
+            # Rename arguments that differ from docker
+            if module_args.get("registry_url"):
+                module_args["registry"] = module_args["registry_url"]
+                del module_args["registry_url"]
+        module_return = self._execute_module(module_name=module,
+                                             module_args=module_args,
+                                             task_vars=task_vars, tmp=tmp)
+        return module_return

ansible/action_plugins/kayobe_container_volume.py

@@ -0,0 +1,17 @@
+from ansible.plugins.action import ActionBase
+
+_engine_to_module = {
+   'docker': 'community.docker.docker_volume',
+   'podman': 'containers.podman.podman_volume'
+}
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+        super(ActionModule, self).run(tmp, task_vars)
+        module_args = self._task.args.copy()
+        engine = task_vars.get("container_engine", "docker")
+        module = _engine_to_module.get(engine)
+        module_return = self._execute_module(module_name=module,
+                                             module_args=module_args,
+                                             task_vars=task_vars, tmp=tmp)
+        return module_return

ansible/container-engine.yml

@@ -0,0 +1,37 @@
+---
+- name: Ensure docker is configured
+  hosts: container-engine
+  max_fail_percentage: >-
+    {{ container_engine_max_fail_percentage |
+       default(docker_max_fail_percentage) |
+       default(host_configure_max_fail_percentage) |
+       default(kayobe_max_fail_percentage) |
+       default(100) }}
+  tags:
+    - docker
+    - container-engine
+  tasks:
+    - include_role:
+        name: docker
+      vars:
+        docker_daemon_mtu: "{{ public_net_name | net_mtu | default }}"
+        docker_configure_for_zun: "{{ kolla_enable_zun | bool }}"
+        docker_http_proxy: "{{ kolla_http_proxy }}"
+        docker_https_proxy: "{{ kolla_https_proxy }}"
+        docker_no_proxy: "{{ kolla_no_proxy | select | join(',') }}"
+      when: container_engine == "docker"
+
+- name: Ensure podman is configured
+  hosts: container-engine
+  max_fail_percentage: >-
+    {{ container_engine_max_fail_percentage |
+       default(host_configure_max_fail_percentage) |
+       default(kayobe_max_fail_percentage) |
+       default(100) }}
+  tags:
+    - podman
+    - container-engine
+  tasks:
+    - include_role:
+        name: openstack.kolla.podman
+      when: container_engine == "podman"

ansible/container-image-build.yml

@@ -34,8 +34,8 @@
         group: "{{ ansible_facts.user_gid }}"
       become: True
 
-    - name: Login to docker registry
-      docker_login:
+    - name: Login to container registry
+      kayobe_container_login:
         registry_url: "{{ kolla_docker_registry or omit }}"
         username: "{{ kolla_docker_registry_username }}"
         password: "{{ kolla_docker_registry_password }}"
@@ -43,6 +43,7 @@
       when:
         - kolla_docker_registry_username is truthy
         - kolla_docker_registry_password is truthy
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure Kolla container images are built
       shell:
@@ -51,6 +52,7 @@
           . {{ kolla_venv }}/bin/activate &&
           kolla-build
           --config-dir {{ kolla_build_config_path }}
+          --engine {{ container_engine }}
           {% if kolla_docker_registry is not none %}--registry {{ kolla_docker_registry }}{% endif %}
           {% if push_images | bool %}--push{% endif %}
           {% if nocache | bool %}--nocache{% endif %}
@@ -59,3 +61,4 @@
         executable: /bin/bash
       with_items: "{{ container_image_sets }}"
       when: item.regexes != ''
+      become: "{{ container_engine == 'podman' }}"

ansible/docker.yml

@@ -1,19 +0,0 @@
----
-- name: Ensure docker is configured
-  hosts: docker
-  max_fail_percentage: >-
-    {{ docker_max_fail_percentage |
-       default(host_configure_max_fail_percentage) |
-       default(kayobe_max_fail_percentage) |
-       default(100) }}
-  tags:
-    - docker
-  tasks:
-    - import_role:
-        name: docker
-      vars:
-        docker_daemon_mtu: "{{ public_net_name | net_mtu | default }}"
-        docker_configure_for_zun: "{{ kolla_enable_zun | bool }}"
-        docker_http_proxy: "{{ kolla_http_proxy }}"
-        docker_https_proxy: "{{ kolla_https_proxy }}"
-        docker_no_proxy: "{{ kolla_no_proxy | select | join(',') }}"

ansible/infra-vm-host-configure.yml

@@ -21,4 +21,4 @@
 - import_playbook: "mdadm.yml"
 - import_playbook: "luks.yml"
 - import_playbook: "lvm.yml"
-- import_playbook: "docker.yml"
+- import_playbook: "container-engine.yml"

ansible/inventory/group_vars/all/compute

@@ -83,7 +83,9 @@ compute_lvm_groups_default: "{{ [compute_lvm_group_data] if compute_lvm_group_da
 compute_lvm_groups_extra: []
 
 # Whether a 'data' LVM volume group should exist on compute hosts. By default
-# this contains a 'docker-volumes' logical volume for Docker volume storage
+# this contains a 'docker-volumes' logical volume for container volume storage
+# if using the docker container engine, or a 'podman-volumes' logical volume
+# for container volume storage if using the podman container engine.
 # Default is false.
 compute_lvm_group_data_enabled: false
 
@@ -100,10 +102,17 @@ compute_lvm_group_data:
 compute_lvm_group_data_disks:
   - changeme
 
-# List of LVM logical volumes for the data volume group.
-compute_lvm_group_data_lvs:
+# List of LVM logical volumes for the data volume group when using docker.
+compute_lvm_group_data_docker_lvs:
   - "{{ compute_lvm_group_data_lv_docker_volumes }}"
 
+# List of LVM logical volumes for the data volume group when using podman.
+compute_lvm_group_data_podman_lvs:
+  - "{{ compute_lvm_group_data_lv_podman_volumes }}"
+
+# List of LVM logical volumes for the data volume group.
+compute_lvm_group_data_lvs: "{{ compute_lvm_group_data_podman_lvs if container_engine == 'podman' else compute_lvm_group_data_docker_lvs }}"
+
 # Docker volumes LVM backing volume.
 compute_lvm_group_data_lv_docker_volumes:
   lvname: docker-volumes
@@ -111,7 +120,16 @@ compute_lvm_group_data_lv_docker_volumes:
   create: True
   filesystem: "{{ compute_lvm_group_data_lv_docker_volumes_fs }}"
   mount: True
-  mntp: /var/lib/docker/volumes
+  mntp: "{{ docker_volumes_path }}"
+
+# Podman volumes LVM backing volume.
+compute_lvm_group_data_lv_podman_volumes:
+  lvname: podman-volumes
+  size: "{{ compute_lvm_group_data_lv_podman_volumes_size }}"
+  create: True
+  filesystem: "{{ compute_lvm_group_data_lv_podman_volumes_fs }}"
+  mount: True
+  mntp: "{{ podman_volumes_path }}"
 
 # Size of docker volumes LVM backing volume.
 compute_lvm_group_data_lv_docker_volumes_size: 75%VG
@@ -119,6 +137,12 @@ compute_lvm_group_data_lv_docker_volumes_size: 75%VG
 # Filesystem for docker volumes LVM backing volume. ext4 allows for shrinking.
 compute_lvm_group_data_lv_docker_volumes_fs: ext4
 
+# Size of podman volumes LVM backing volume.
+compute_lvm_group_data_lv_podman_volumes_size: 75%VG
+
+# Filesystem for podman volumes LVM backing volume. ext4 allows for shrinking.
+compute_lvm_group_data_lv_podman_volumes_fs: ext4
+
 ###############################################################################
 # Compute node sysctl configuration.
 

ansible/inventory/group_vars/all/container-engine

@@ -0,0 +1,76 @@
+---
+###############################################################################
+# Container engine configuration
+
+# Configures the container engine. Default is 'docker'.
+container_engine: docker
+
+# Path to container volumes. Default is '{{ podman_volumes_path }}' if
+# 'container_engine' is set to podman, otherwise '{{ docker_volumes_path }}'.
+container_engine_volumes_path: "{{ podman_volumes_path if container_engine == 'podman' else docker_volumes_path }}"
+
+###############################################################################
+# Docker configuration.
+
+# Name of the docker storage driver. Default is 'overlay2'.
+docker_storage_driver: overlay2
+
+# Name of the docker storage LVM volume group.
+docker_storage_volume_group: data
+
+# Name of the docker storage data LVM volume.
+docker_storage_volume_thinpool: docker-thinpool
+
+# Size of the docker storage data LVM volume (see lvol module size argument).
+docker_storage_volume_thinpool_size: 20%VG
+
+# Name of the docker storage metadata LVM volume.
+docker_storage_volume_thinpool_meta: docker-thinpoolmeta
+
+# Size of the docker storage metadata LVM volume (see lvol module size
+# argument).
+docker_storage_volume_thinpool_meta_size: 1%VG
+
+# URL of docker registry
+docker_registry:
+
+# Whether docker should be configured to use an insecure registry.
+# Default is false, unless docker_registry_enabled is true and
+# docker_registry_enable_tls is false.
+docker_registry_insecure: "{{ docker_registry_enabled | bool and not docker_registry_enable_tls | bool }}"
+
+# CA of docker registry
+docker_registry_ca:
+
+# List of Docker registry mirrors.
+docker_registry_mirrors: []
+
+# Enable live-restore on docker daemon
+docker_daemon_live_restore: false
+
+# Path to docker runtime directory. Default is "", which means to use the
+# default location: '/var/lib/docker'.
+docker_runtime_directory: ""
+
+# Path to docker volumes. Default is '{{ docker_runtime_directory |
+# default('/var/lib/docker', true) ~ '/volumes' }}"'.
+docker_volumes_path: "{{ docker_runtime_directory | default('/var/lib/docker', true) ~ '/volumes' }}"
+
+###############################################################################
+# Podman configuration.
+
+# URL of podman container registry
+podman_registry:
+
+# Whether podman should be configured to use an insecure registry.
+# Default is false, unless docker_registry_enabled is true and
+# docker_registry_enable_tls is false.
+podman_registry_insecure: "{{ docker_registry_enabled | bool and not docker_registry_enable_tls | bool }}"
+
+# Path to podman runtime directory. Default is None, which means to use the
+# default location: '/var/lib/containers/storage'.
+podman_runtime_directory:
+
+# Path to podman volumes. Default is '{{ podman_runtime_directory |
+# default('/var/lib/containers/storage', true) ~ '/volumes' }}"'.
+podman_volumes_path: "{{ podman_runtime_directory | default('/var/lib/containers/storage', true) ~ '/volumes' }}"

ansible/inventory/group_vars/all/controllers

@@ -141,10 +141,17 @@ controller_lvm_group_data:
 controller_lvm_group_data_disks:
   - changeme
 
-# List of LVM logical volumes for the data volume group.
-controller_lvm_group_data_lvs:
+# List of LVM logical volumes for the data volume group when using docker.
+controller_lvm_group_data_docker_lvs:
   - "{{ controller_lvm_group_data_lv_docker_volumes }}"
 
+# List of LVM logical volumes for the data volume group when using podman.
+controller_lvm_group_data_podman_lvs:
+  - "{{ controller_lvm_group_data_lv_podman_volumes }}"
+
+# List of LVM logical volumes for the data volume group.
+controller_lvm_group_data_lvs: "{{ controller_lvm_group_data_podman_lvs if container_engine == 'podman' else controller_lvm_group_data_docker_lvs }}"
+
 # Docker volumes LVM backing volume.
 controller_lvm_group_data_lv_docker_volumes:
   lvname: docker-volumes
@@ -152,7 +159,15 @@ controller_lvm_group_data_lv_docker_volumes:
   create: True
   filesystem: "{{ controller_lvm_group_data_lv_docker_volumes_fs }}"
   mount: True
-  mntp: /var/lib/docker/volumes
+  mntp: "{{ docker_volumes_path }}"
+
+controller_lvm_group_data_lv_podman_volumes:
+  lvname: podman-volumes
+  size: "{{ controller_lvm_group_data_lv_podman_volumes_size }}"
+  create: True
+  filesystem: "{{ controller_lvm_group_data_lv_podman_volumes_fs }}"
+  mount: True
+  mntp: "{{ podman_volumes_path }}"
 
 # Size of docker volumes LVM backing volume.
 controller_lvm_group_data_lv_docker_volumes_size: 75%VG
@@ -160,6 +175,12 @@ controller_lvm_group_data_lv_docker_volumes_size: 75%VG
 # Filesystem for docker volumes LVM backing volume. ext4 allows for shrinking.
 controller_lvm_group_data_lv_docker_volumes_fs: ext4
 
+# Size of podman volumes LVM backing volume.
+controller_lvm_group_data_lv_podman_volumes_size: 75%VG
+
+# Filesystem for podman volumes LVM backing volume. ext4 allows for shrinking.
+controller_lvm_group_data_lv_podman_volumes_fs: ext4
+
 ###############################################################################
 # Controller node sysctl configuration.
 

ansible/inventory/group_vars/all/docker

@@ -1,39 +0,0 @@
----
-###############################################################################
-# Docker configuration.
-
-# Name of the docker storage driver. Default is 'overlay2'.
-docker_storage_driver: overlay2
-
-# Name of the docker storage LVM volume group.
-docker_storage_volume_group: data
-
-# Name of the docker storage data LVM volume.
-docker_storage_volume_thinpool: docker-thinpool
-
-# Size of the docker storage data LVM volume (see lvol module size argument).
-docker_storage_volume_thinpool_size: 20%VG
-
-# Name of the docker storage metadata LVM volume.
-docker_storage_volume_thinpool_meta: docker-thinpoolmeta
-
-# Size of the docker storage metadata LVM volume (see lvol module size
-# argument).
-docker_storage_volume_thinpool_meta_size: 1%VG
-
-# URL of docker registry
-docker_registry:
-
-# Whether docker should be configured to use an insecure registry.
-# Default is false, unless docker_registry_enabled is true and
-# docker_registry_enable_tls is false.
-docker_registry_insecure: "{{ docker_registry_enabled | bool and not docker_registry_enable_tls | bool }}"
-
-# CA of docker registry
-docker_registry_ca:
-
-# List of Docker registry mirrors.
-docker_registry_mirrors: []
-
-# Enable live-restore on docker daemon
-docker_daemon_live_restore: false

ansible/inventory/group_vars/all/infra-vms

@@ -149,10 +149,17 @@ infra_vm_lvm_group_data:
 infra_vm_lvm_group_data_disks:
   - changeme
 
-# List of LVM logical volumes for the data volume group.
-infra_vm_lvm_group_data_lvs:
+# List of LVM logical volumes for the data volume group when using docker.
+infra_vm_lvm_group_data_docker_lvs:
   - "{{ infra_vm_lvm_group_data_lv_docker_volumes }}"
 
+# List of LVM logical volumes for the data volume group when using podman.
+infra_vm_lvm_group_data_podman_lvs:
+  - "{{ infra_vm_lvm_group_data_lv_podman_volumes }}"
+
+# List of LVM logical volumes for the data volume group.
+infra_vm_lvm_group_data_lvs: "{{ infra_vm_lvm_group_data_podman_lvs if container_engine == 'podman' else infra_vm_lvm_group_data_docker_lvs }}"
+
 # Docker volumes LVM backing volume.
 infra_vm_lvm_group_data_lv_docker_volumes:
   lvname: docker-volumes
@@ -160,7 +167,15 @@ infra_vm_lvm_group_data_lv_docker_volumes:
   create: True
   filesystem: "{{ infra_vm_lvm_group_data_lv_docker_volumes_fs }}"
   mount: True
-  mntp: /var/lib/docker/volumes
+  mntp: "{{ docker_volumes_path }}"
+
+infra_vm_lvm_group_data_lv_podman_volumes:
+  lvname: podman-volumes
+  size: "{{ infra_vm_lvm_group_data_lv_podman_volumes_size }}"
+  create: True
+  filesystem: "{{ infra_vm_lvm_group_data_lv_podman_volumes_fs }}"
+  mount: True
+  mntp: "{{ podman_volumes_path }}"
 
 # Size of docker volumes LVM backing volume.
 infra_vm_lvm_group_data_lv_docker_volumes_size: 75%VG
@@ -168,6 +183,12 @@ infra_vm_lvm_group_data_lv_docker_volumes_size: 75%VG
 # Filesystem for docker volumes LVM backing volume. ext4 allows for shrinking.
 infra_vm_lvm_group_data_lv_docker_volumes_fs: ext4
 
+# Size of podman volumes LVM backing volume.
+infra_vm_lvm_group_data_lv_podman_volumes_size: 75%VG
+
+# Filesystem for podman volumes LVM backing volume. ext4 allows for shrinking.
+infra_vm_lvm_group_data_lv_podman_volumes_fs: ext4
+
 ###############################################################################
 # Infrastructure VM node sysctl configuration.
 

ansible/inventory/group_vars/all/kolla

@@ -73,11 +73,14 @@ kolla_base_distro_version_default_map: {
 # Default is kolla_base_distro_version_default_map[kolla_base_distro].
 kolla_base_distro_version: "{{ kolla_base_distro_version_default_map[kolla_base_distro] }}"
 
+# Kolla docker container engine. Default is '{{ container_engine }}'.
+kolla_container_engine: "{{ container_engine }}"
+
 # Docker namespace to use for Kolla images.
 kolla_docker_namespace: "openstack.kolla"
 
 # Url of docker registry to use for Kolla images.
-kolla_docker_registry: "{{ docker_registry }}"
+kolla_docker_registry: "{{ podman_registry if container_engine == 'podman' else docker_registry }}"
 
 # Username to use to access a docker registry.
 kolla_docker_registry_username:
@@ -291,6 +294,7 @@ kolla_seed_inventory_pass_through_host_vars_default:
   - "ansible_ssh_private_key_file"
   - "kolla_api_interface"
   - "kolla_bifrost_network_interface"
+  - "container_engine"
 
 # List of names of additional host variables to pass through from kayobe hosts
 # to the kolla-ansible seed host, if set. See also
@@ -311,6 +315,7 @@ kolla_seed_inventory_pass_through_host_vars: >-
 kolla_seed_inventory_pass_through_host_vars_map_default:
   kolla_api_interface: "api_interface"
   kolla_bifrost_network_interface: "bifrost_network_interface"
+  container_engine: "kolla_container_engine"
 
 # Dict mapping names of extra variables in
 # kolla_seed_inventory_pass_through_host_vars to the variable to use in
@@ -386,6 +391,7 @@ kolla_overcloud_inventory_kolla_top_level_groups:
 kolla_overcloud_inventory_pass_through_host_vars_default:
   - "ansible_host"
   - "ansible_port"
+  - "container_engine"
   - "ansible_ssh_private_key_file"
   - "kolla_network_interface"
   - "kolla_api_interface"
@@ -432,6 +438,7 @@ kolla_overcloud_inventory_pass_through_host_vars_map_default:
   kolla_neutron_external_interfaces: "neutron_external_interface"
   kolla_neutron_bridge_names: "neutron_bridge_name"
   kolla_neutron_physical_networks: "neutron_physical_networks"
+  container_engine: "kolla_container_engine"
 
 # Dict mapping names of additional variables in
 # kolla_overcloud_inventory_pass_through_host_vars to the variable to use in

ansible/inventory/group_vars/all/overcloud-dib

@@ -57,8 +57,9 @@ overcloud_dib_elements: "{{ overcloud_dib_elements_default | select | list + ove
 overcloud_dib_env_vars_default:
   DIB_BOOTLOADER_DEFAULT_CMDLINE: "nofb nomodeset gfxpayload=text net.ifnames=1"
   DIB_CLOUD_INIT_DATASOURCES: "ConfigDrive"
-  DIB_CONTAINERFILE_RUNTIME: "docker"
+  DIB_CONTAINERFILE_RUNTIME: "{{ container_engine }}"
   DIB_CONTAINERFILE_NETWORK_DRIVER: "host"
+  DIB_CONTAINERFILE_RUNTIME_ROOT: "{{ '1' if container_engine == 'podman' else '0' }}"
   DIB_RELEASE: "{{ overcloud_dib_os_release }}"
 
 # DIB additional environment variables. Default is none.

ansible/inventory/group_vars/all/seed

@@ -69,10 +69,17 @@ seed_lvm_group_data:
 seed_lvm_group_data_disks:
   - changeme
 
-# List of LVM logical volumes for the data volume group.
-seed_lvm_group_data_lvs:
+# List of LVM logical volumes for the data volume group when using docker.
+seed_lvm_group_data_docker_lvs:
   - "{{ seed_lvm_group_data_lv_docker_volumes }}"
 
+# List of LVM logical volumes for the data volume group when using podman.
+seed_lvm_group_data_podman_lvs:
+  - "{{ seed_lvm_group_data_lv_podman_volumes }}"
+
+# List of LVM logical volumes for the data volume group.
+seed_lvm_group_data_lvs: "{{ seed_lvm_group_data_podman_lvs if container_engine == 'podman' else seed_lvm_group_data_docker_lvs }}"
+
 # Docker volumes LVM backing volume.
 seed_lvm_group_data_lv_docker_volumes:
   lvname: docker-volumes
@@ -80,7 +87,15 @@ seed_lvm_group_data_lv_docker_volumes:
   create: True
   filesystem: "{{ seed_lvm_group_data_lv_docker_volumes_fs }}"
   mount: True
-  mntp: /var/lib/docker/volumes
+  mntp: "{{ docker_volumes_path }}"
+
+seed_lvm_group_data_lv_podman_volumes:
+  lvname: podman-volumes
+  size: "{{ seed_lvm_group_data_lv_podman_volumes_size }}"
+  create: True
+  filesystem: "{{ seed_lvm_group_data_lv_podman_volumes_fs }}"
+  mount: True
+  mntp: "{{ podman_volumes_path }}"
 
 # Size of docker volumes LVM backing volume.
 seed_lvm_group_data_lv_docker_volumes_size: 75%VG
@@ -88,6 +103,12 @@ seed_lvm_group_data_lv_docker_volumes_size: 75%VG
 # Filesystem for docker volumes LVM backing volume. ext4 allows for shrinking.
 seed_lvm_group_data_lv_docker_volumes_fs: ext4
 
+# Size of podman volumes LVM backing volume.
+seed_lvm_group_data_lv_podman_volumes_size: 75%VG
+
+# Filesystem for podman volumes LVM backing volume. ext4 allows for shrinking.
+seed_lvm_group_data_lv_podman_volumes_fs: ext4
+
 ###############################################################################
 # Seed node sysctl configuration.
 

ansible/kayobe-ansible-user.yml

@@ -70,11 +70,11 @@
     - import_role:
         name: singleplatform-eng.users
       vars:
-        groups_to_create: "{{ [{'name': 'docker'}] if 'docker' in group_names else [] }}"
+        groups_to_create: "{{ [{'name': 'docker'}] if 'container-engine' in group_names and container_engine == 'docker' else [] }}"
         users:
           - username: "{{ kayobe_ansible_user }}"
             name: Kayobe deployment user
-            groups: "{{ ['docker'] if 'docker' in group_names else [] }}"
+            groups: "{{ ['docker'] if 'container-engine' in group_names and container_engine == 'docker' else [] }}"
             append: True
             ssh_key:
               - "{{ lookup('file', ssh_public_key_path) }}"

ansible/kayobe-target-venv.yml

@@ -121,4 +121,16 @@
       become: "{{ virtualenv is not defined }}"
       vars:
         docker_upper_constraints_file: "{{ pip_upper_constraints_file }}"
-      when: "'docker' in group_names"
+      when:
+        - "'container-engine' in group_names"
+        - container_engine == 'docker'
+
+    - name: Ensure kayobe virtualenv has podman SDK installed
+      import_role:
+         name: openstack.kolla.podman_sdk
+      vars:
+        virtualenv: "{{ virtualenv }}"
+        podman_sdk_upper_constraints_file: "{{ pip_upper_constraints_file }}"
+      when:
+        - "'container-engine' in group_names"
+        - container_engine == 'podman'

ansible/kolla-ansible-user.yml

@@ -27,15 +27,21 @@
             apply:
               become: True
           vars:
-            groups_to_create:
+            groups_to_create: "{{ groups_to_create_template | from_yaml }}"
+            groups_to_create_template: |-
+              {% if container_engine == 'docker' %}
               - name: docker
+              {% endif %}
               - name: "{{ kolla_ansible_group }}"
               - name: sudo
-            users:
+            users: "{{ users_template | from_yaml }}"
+            users_template: |-
               - username: "{{ kolla_ansible_user }}"
                 group: "{{ kolla_ansible_group }}"
                 groups:
+                {% if container_engine == 'docker' %}
                   - docker
+                {% endif %}
                   - sudo
                 append: True
                 ssh_key:

ansible/kolla-bifrost-hostvars.yml

@@ -51,7 +51,7 @@
         - block:
             - name: Query overcloud nodes' hardware introspection data
               command: >
-                docker exec bifrost_deploy
+                {{ container_engine }} exec bifrost_deploy
                 bash -c '
                 env BIFROST_INVENTORY_SOURCE=ironic BIFROST_NODE_NAMES="{{ inventory_hostname }}" OS_CLOUD=bifrost
                 ansible baremetal
@@ -70,6 +70,7 @@
                 # NOTE: Without this, the seed's ansible_host variable will not be
                 # respected when using delegate_to.
                 ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+              become: "{{ container_engine == 'podman' }}"
 
             - name: Set interface MAC from Ironic introspection data
               vars:

ansible/kolla-target-venv.yml

@@ -57,6 +57,16 @@
             virtualenv: "{{ kolla_ansible_target_venv }}"
             extra_args: "{% if kolla_upper_constraints_file %}-c {{ kolla_upper_constraints_file }}{% endif %}"
           become: True
+          when: "{{ container_engine == 'docker' }}"
+
+        - name: Ensure kolla-ansible virtualenv has podman SDK installed
+          pip:
+            name: podman
+            state: latest
+            virtualenv: "{{ kolla_ansible_target_venv }}"
+            extra_args: "{% if kolla_upper_constraints_file %}-c {{ kolla_upper_constraints_file }}{% endif %}"
+          become: True
+          when: "{{ container_engine == 'podman' }}"
 
         - name: Ensure kolla-ansible virtualenv has SELinux bindings installed
           pip:

ansible/overcloud-bios-raid.yml

@@ -79,7 +79,7 @@
   pre_tasks:
     - name: Set the overcloud nodes' maintenance mode
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -98,6 +98,7 @@
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
       when: bios_or_raid_change | bool
+      become: "{{ container_engine == 'podman' }}"
 
   roles:
     - role: stackhpc.drac
@@ -111,7 +112,7 @@
   tasks:
     - name: Unset the overcloud nodes' maintenance mode
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -130,3 +131,4 @@
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
       when: bios_or_raid_change | bool
+      become: "{{ container_engine == 'podman' }}"

ansible/overcloud-deprovision.yml

@@ -52,7 +52,7 @@
 
     - name: Get PXE MAC address
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export OS_BAREMETAL_API_VERSION=1.34 &&
@@ -61,6 +61,7 @@
         openstack baremetal port list --node {{ inventory_hostname }} --fields address -f value'
       register: pxe_result
       delegate_to: "{{ seed_host }}"
+      become: "{{ container_engine == 'podman' }}"
       vars:
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
@@ -68,7 +69,7 @@
 
     - name: Check the ironic node's initial provision state
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export OS_BAREMETAL_API_VERSION=1.34 &&
@@ -89,6 +90,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the ironic node's initial provision state
       set_fact:
@@ -104,7 +106,7 @@
 
     - name: Ensure the ironic node is deprovisioned
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -127,10 +129,11 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Wait for the ironic node to become available
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export OS_BAREMETAL_API_VERSION=1.34 &&
@@ -158,6 +161,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the ironic node's final provision state
       set_fact:
@@ -190,7 +194,7 @@
 
     - name: Delete ironic-mac-addr.conf
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         rm -f /etc/dnsmasq.d/bifrost.dhcp-hosts.d/ironic-{{ item }}.conf'
       loop: "{{ pxe_result.stdout_lines }}"
@@ -199,3 +203,4 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"

ansible/overcloud-etc-hosts-fixup.yml

@@ -40,21 +40,23 @@
       - rabbitmq
   tasks:
     - name: Check whether rabbitmq container is running
-      command: docker inspect -f {{ '{{.Id}}' }} {{ item }}
+      command: "{{ container_engine }} inspect -f {{ '{{.Id}}' }} {{ item }}"
       changed_when: False
       failed_when: False
       with_items: "{{ rabbitmq_containers }}"
       register: ps_result
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Copy /etc/hosts into rabbitmq containers
-      command: docker cp /etc/hosts {{ item.item }}:/tmp/hosts
+      command: "{{ container_engine }} cp /etc/hosts {{ item.item }}:/tmp/hosts"
       with_items: "{{ ps_result.results }}"
       when: item.rc == 0
       changed_when: false
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure rabbitmq containers' /etc/hosts does not contain incorrect IPs
       command: >
-        docker exec -u root {{ item.item }}
+        {{ container_engine }} exec -u root {{ item.item }}
         bash -c
          'if ! diff -q /tmp/hosts /etc/hosts >/dev/null; then
            cp /tmp/hosts /etc/hosts &&
@@ -65,9 +67,11 @@
       with_items: "{{ ps_result.results }}"
       when: item.rc == 0
       register: sed_result
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Check that RabbitMQ client works
-      command: docker exec {{ item.item }} rabbitmqctl status
+      command: "{{ container_engine }} exec {{ item.item }} rabbitmqctl status"
       with_items: "{{ ps_result.results }}"
       when: item.rc == 0
       changed_when: false
+      become: "{{ container_engine == 'podman' }}"

ansible/overcloud-hardware-inspect.yml

@@ -32,7 +32,7 @@
   tasks:
     - name: Check the ironic node's initial provision state
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -52,6 +52,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the ironic node's initial provision state
       set_fact:
@@ -67,7 +68,7 @@
 
     - name: Ensure the ironic node is manageable
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -90,10 +91,11 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure the ironic node is inspected
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -115,10 +117,11 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Wait for the ironic node to be inspected
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -143,6 +146,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the final provision state
       set_fact:

ansible/overcloud-host-configure.yml

@@ -27,7 +27,7 @@
 - import_playbook: "kolla-pip.yml"
 - import_playbook: "kolla-target-venv.yml"
 - import_playbook: "kolla-packages.yml"
-- import_playbook: "docker.yml"
+- import_playbook: "container-engine.yml"
 - import_playbook: "apparmor-libvirt.yml"
 - import_playbook: "swift-block-devices.yml"
 - import_playbook: "compute-libvirt-host.yml"

ansible/overcloud-host-image-build.yml

@@ -37,7 +37,7 @@
         - name: Copy overcloud host disk images into /httpboot
           copy:
             src: "{{ image_cache_path }}/{{ image.name }}/{{ image.name }}.{{ image.type | default('qcow2') }}"
-            dest: "/var/lib/docker/volumes/bifrost_httpboot/_data/{{ image.name }}.{{ image.type | default('qcow2') }}"
+            dest: "{{ container_engine_volumes_path }}/bifrost_httpboot/_data/{{ image.name }}.{{ image.type | default('qcow2') }}"
             remote_src: True
           with_items: "{{ overcloud_dib_host_images }}"
           loop_control:

ansible/overcloud-introspection-data-save.yml

@@ -15,7 +15,7 @@
   tasks:
     - name: Query overcloud nodes' hardware introspection data
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         env BIFROST_INVENTORY_SOURCE=ironic BIFROST_NODE_NAMES="{{ inventory_hostname }}" OS_CLOUD=bifrost
         ansible baremetal
@@ -35,6 +35,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure introspection data output directory exists
       local_action:

ansible/overcloud-inventory-discover.yml

@@ -9,13 +9,14 @@
   tasks:
     - name: Gather the Ironic node inventory using Bifrost
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
         /bifrost/playbooks/inventory/bifrost_inventory.py'
       register: inventory_result
       changed_when: False
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the Ironic node inventory
       set_fact:

ansible/overcloud-provision.yml

@@ -42,7 +42,7 @@
   tasks:
     - name: Check the ironic node's initial provision state
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export OS_BAREMETAL_API_VERSION=1.34 &&
@@ -63,6 +63,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the ironic node's initial provision state
       set_fact:
@@ -78,7 +79,7 @@
 
     - name: Ensure the ironic node is manageable
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -101,10 +102,11 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure the ironic node is available
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -136,6 +138,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the bifrost host list
       set_fact:
@@ -146,7 +149,7 @@
 
     - name: Ensure the ironic nodes are provisioned
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export BIFROST_INVENTORY_SOURCE=ironic &&
@@ -165,10 +168,11 @@
       # We execute this only once, allowing the Bifrost Ansible to handle
       # multiple nodes.
       run_once: True
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Wait for the ironic node to become active
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         export OS_CLOUD=bifrost &&
         export OS_BAREMETAL_API_VERSION=1.34 &&
@@ -196,6 +200,7 @@
         # NOTE: Without this, the seed's ansible_host variable will not be
         # respected when using delegate_to.
         ansible_host: "{{ hostvars[seed_host].ansible_host | default(seed_host) }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Set a fact containing the final provision state
       set_fact:

ansible/roles/dell-switch-bmp/handlers/main.yml

@@ -1,28 +1,31 @@
 ---
 - name: Copy dnsmasq configuration
   command: >
-    docker exec bifrost_deploy
+    {{ container_engine }} exec bifrost_deploy
     bash -c 'export OS_CLOUD=bifrost &&
     ansible -vvvv target -i /bifrost/playbooks/inventory/target
     -m copy
     -a "src=/etc/bifrost/dell-switch-bmp.conf dest=/etc/dnsmasq.d/dell-switch-bmp.conf"
     -e "ansible_python_interpreter=/var/lib/kolla/venv/bin/python"'
+    become: "{{ container_engine == 'podman' }}"
 
 - name: Restart bifrost dnsmasq
   command: >
-    docker exec bifrost_deploy
+    {{ container_engine }} exec bifrost_deploy
     bash -c 'export OS_CLOUD=bifrost &&
     ansible -vvvv target -i /bifrost/playbooks/inventory/target
     -m service
     -a "name=dnsmasq state=restarted"
     -e "ansible_python_interpreter=/var/lib/kolla/venv/bin/python"'
+  become: "{{ container_engine == 'podman' }}"
 
 - name: Copy Dell switch BMP images
   command: >
-    docker exec bifrost_deploy
+    {{ container_engine }} exec bifrost_deploy
     bash -c 'export OS_CLOUD=bifrost &&
     ansible -vvvv target -i /bifrost/playbooks/inventory/target
     -m copy
     -a "src=/etc/bifrost/{{ item.dest }} dest={{ dell_switch_bmp_httpboot_path }}/{{ item.dest }}"
     -e "ansible_python_interpreter=/var/lib/kolla/venv/bin/python"'
   with_items: "{{ dell_switch_bmp_images }}"
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/docker-registry/defaults/main.yml

@@ -82,10 +82,8 @@ docker_registry_basic_auth_htpasswd_path:
 ####################
 # Docker
 ####################
-# NOTE: Namespace 'library' causes image task to always be changed and
-# container to never update to new images.
-docker_registry_namespace: ""
-docker_registry_image: "{{ docker_registry_namespace ~ '/' if docker_registry_namespace else '' }}registry"
+docker_registry_namespace: "library"
+docker_registry_image: "docker.io/{{ docker_registry_namespace ~ '/' if docker_registry_namespace else '' }}registry"
 docker_registry_tag: "latest"
 docker_registry_image_full: "{{ docker_registry_image }}:{{ docker_registry_tag }}"
 

ansible/roles/docker-registry/handlers/main.yml

@@ -1,6 +1,6 @@
 ---
 - name: Restart docker-registry container
-  docker_container:
+  kayobe_container:
     name: "{{ item.value.container_name }}"
     state: started
     restart: True
@@ -10,3 +10,4 @@
     image: "{{ item.value.image }}"
   with_dict: "{{ docker_registry_services }}"
   when: item.value.enabled
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/docker-registry/tasks/deploy.yml

@@ -2,7 +2,7 @@
 - import_tasks: config.yml
 
 - name: Ensure Docker registry container is running
-  docker_container:
+  kayobe_container:
     env: "{{ item.value.env }}"
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
@@ -15,3 +15,4 @@
     state: "{{ item.value.enabled | ternary('started', 'absent') }}"
     volumes: "{{ item.value.volumes | select | list }}"
   with_dict: "{{ docker_registry_services }}"
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/docker-registry/tasks/destroy.yml

@@ -1,29 +1,17 @@
 ---
 - name: Ensure docker registry container is stopped
-  docker_container:
+  kayobe_container:
     name: "{{ item.value.container_name }}"
     state: "absent"
   with_dict: "{{ docker_registry_services }}"
 
-- name: Check whether docker registry volumes are present
-  command: docker volume inspect {{ volume }}
-  changed_when: False
+- name: Check whether docker registry volumes are absent
+  kayobe_container_volume:
+    name: "{{ volume }}"
+    state: absent
   with_subelements:
     - "{{ docker_registry_services }}"
     - volumes
   when: "'/' not in volume"
-  failed_when:
-    - volume_result.rc != 0
-    - "'no such volume' not in volume_result.stderr | lower"
   vars:
-    volume: "{{ item.1.split(':')[0] }}"
-  register: volume_result
-
-- name: Ensure docker registry volumes are absent
-  command: docker volume rm {{ volume }}
-  with_items: "{{ volume_result.results }}"
-  when:
-    - item is not skipped
-    - item.rc == 0
-  vars:
-    volume: "{{ item.item.1.split(':')[0] }}"
+    volume: "{{ item.1.split(':')[0] }}"

ansible/roles/docker-registry/tasks/pull.yml

@@ -1,11 +1,11 @@
 ---
 - name: Pulling Docker registry container image
-  docker_image:
+  kayobe_container_image:
     name: "{{ item.value.image }}"
-    repository: "{{ item.value.image }}"
     source: pull
     state: present
   with_dict: "{{ docker_registry_services }}"
   when:
     - item.value.enabled
     - docker_registry_action != 'destroy'
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/docker-registry/tasks/stop.yml

@@ -1,9 +1,10 @@
 ---
 - name: Ensure Docker registry container is stopped
-  docker_container:
+  kayobe_container:
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
     state: "stopped"
   with_dict: "{{ docker_registry_services }}"
   when:
     - item.value.enabled | bool
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/inspection-store/defaults/main.yml

@@ -29,9 +29,8 @@ inspection_store_config_path: "/etc/inspection-store"
 ####################
 # Inspection Store
 ####################
-# NOTE: Namespace 'library' causes image task to always be changed and
-# container to never update to new images.
-inspection_store_namespace: ""
+inspection_store_namespace: "library"
+inspection_store: docker.io
 inspection_store_image: "{{ inspection_store ~ '/' if inspection_store | default else '' }}{{ inspection_store_namespace ~ '/' if inspection_store_namespace else '' }}nginx"
 inspection_store_tag: "stable"
 inspection_store_image_full: "{{ inspection_store_image }}:{{ inspection_store_tag }}"

ansible/roles/inspection-store/handlers/main.yml

@@ -1,6 +1,6 @@
 ---
 - name: Restart inspection store container
-  docker_container:
+  kayobe_container:
     name: "{{ item.value.container_name }}"
     state: started
     restart: True
@@ -10,10 +10,12 @@
     image: "{{ item.value.image }}"
   with_dict: "{{ inspection_store_services }}"
   when: item.value.enabled
+  become: "{{ container_engine == 'podman' }}"
 
 - name: Ensure inspection store data directory exists
   command: >
-    docker exec {{ inspection_store_services.inspection_store.container_name }}
+    {{ container_engine }} exec {{ inspection_store_services.inspection_store.container_name }}
     bash -c "mkdir -p /data/ironic-inspector &&
              chown nginx:nginx /data/ironic-inspector"
   when: inspection_store_services.inspection_store.enabled
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/inspection-store/tasks/destroy.yml

@@ -1,13 +1,15 @@
 ---
 - name: Ensure inspection store container is stopped
-  docker_container:
+  kayobe_container:
     name: "{{ item.value.container_name }}"
     state: "absent"
   with_dict: "{{ inspection_store_services }}"
+  become: "{{ container_engine == 'podman' }}"
 
-- name: Check whether inspection store volumes are present
-  command: docker volume inspect {{ volume }}
-  changed_when: False
+- name: Ensure inspection store volumes are absent
+  kayobe_container_volume:
+    name: "{{ volume }}"
+    state: absent
   with_subelements:
     - "{{ inspection_store_services }}"
     - volumes
@@ -17,13 +19,4 @@
     - "'no such volume' not in volume_result.stderr | lower"
   vars:
     volume: "{{ item.1.split(':')[0] }}"
-  register: volume_result
-
-- name: Ensure inspection store volumes are absent
-  command: docker volume rm {{ volume }}
-  with_items: "{{ volume_result.results }}"
-  when:
-    - item is not skipped
-    - item.rc == 0
-  vars:
-    volume: "{{ item.item.1.split(':')[0] }}"
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/inspection-store/tasks/pull.yml

@@ -1,11 +1,11 @@
 ---
 - name: Pulling inspection store container image
-  docker_image:
+  kayobe_container_image:
     name: "{{ item.value.image }}"
-    repository: "{{ item.value.image }}"
     source: pull
     state: present
   with_dict: "{{ inspection_store_services }}"
   when:
     - item.value.enabled
     - inspection_store_action != 'destroy'
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/inspection-store/tasks/start.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure inspection store container is running
-  docker_container:
+  kayobe_container:
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
     ports: "{{ item.value.ports | default(omit) }}"
@@ -14,4 +14,5 @@
   with_dict: "{{ inspection_store_services }}"
   notify:
     - Ensure inspection store data directory exists
+  become: "{{ container_engine == 'podman' }}"
   when: item.value.enabled | bool

ansible/roles/inspection-store/tasks/stop.yml

@@ -1,9 +1,10 @@
 ---
 - name: Ensure inspection store container is stopped
-  docker_container:
+  kayobe_container:
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
     state: "stopped"
   with_dict: "{{ inspection_store_services }}"
   when:
     - item.value.enabled | bool
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/kolla-build/tasks/main.yml

@@ -38,13 +38,14 @@
     mode: "0644"
 
 - name: Run multiarch/qemu-user-static image to support cross-arch build
-  community.general.docker_container:
+  kayobe_container:
     command: "--reset -p yes"
     cleanup: true
     detach: false
-    image: "multiarch/qemu-user-static:7.2.0-1"
+    image: "docker.io/multiarch/qemu-user-static:7.2.0-1"
     name: "qemu_user_static"
     privileged: true
     state: "started"
     network_mode: "host"
+  become: "{{ container_engine == 'podman' }}"
   when: ansible_facts.architecture != kolla_base_arch

ansible/roles/kolla/tasks/install.yml

@@ -85,4 +85,7 @@
       # This can be removed once a newer version of docker is released and the version in upper
       # constraints has been bumped (>7.0.0).
       extra_args: "{{ omit }}"
+      install: "{{ container_engine == 'docker' }}"
+    - name: "podman"
+      install: "{{ container_engine == 'podman' }}"
   when: item.install | default(True) | bool

ansible/roles/manage-containers/tasks/deploy-container.yml

@@ -1,16 +1,17 @@
 ---
 - name: "[{{ container_name }}] Ensure we have latest image"
-  docker_image:
+  kayobe_container_image:
     name: "{{ container_config.image }}"
     tag: "{{ container_config.tag | default(omit) }}"
     source: pull
+  become: "{{ container_engine == 'podman' }}"
 
 - name: "[{{ container_name }}] Include tasks file for pre task(s)"
   include_tasks: "{{ container_config.pre }}"
   when: container_config.pre is defined
 
 - name: "[{{ container_name }}] Start container"
-  docker_container:
+  kayobe_container:
     capabilities: "{{ container_config.capabilities | default(omit) }}"
     command: "{{ container_config.command | default(omit) }}"
     comparisons: "{{ container_config.comparisons | default(deploy_containers_defaults.comparisons) }}"
@@ -31,7 +32,7 @@
     ulimits: "{{ container_config.ulimits | default(omit) }}"
     user: "{{ container_config.user | default(omit) }}"
     volumes: "{{ container_config.volumes | default(omit) }}"
-  become: true
+  become: "{{ container_engine == 'podman' }}"
 
 - name: "[{{ container_name }}] Include tasks file for post task(s)"
   include_tasks: "{{ container_config.post }}"

ansible/roles/manage-containers/tasks/deploy.yml

@@ -1,17 +1,17 @@
 ---
-- name: Login to docker registry
-  docker_login:
+- name: Login to container registry
+  kayobe_container_login:
     registry_url: "{{ kolla_docker_registry or omit }}"
     username: "{{ kolla_docker_registry_username }}"
     password: "{{ kolla_docker_registry_password }}"
     reauthorize: yes
   when:
     - deploy_containers_registry_attempt_login | bool
-  become: true
+  become: "{{ container_engine == 'podman' }}"
 
 - name: Deploy containers (loop)
-  include_tasks: deploy-container.yml
+  include_tasks: deploy.yml
   vars:
     container_name: "{{ item.key }}"
     container_config: "{{ item.value }}"
-  with_dict: "{{ seed_containers }}"
+  with_dict: "{{ seed_containers }}"

ansible/roles/manage-containers/tasks/destroy-container.yml

@@ -5,7 +5,7 @@
   when: container_config.pre_destroy is defined
 
 - name: "[{{ container_name }}] Delete container"
-  docker_container:
+  kayobe_container:
     name: "{{ container_name }}"
     state: absent
   become: true

ansible/roles/opensm/defaults/main.yml

@@ -26,7 +26,7 @@ opensm_services:
 # Docker
 ####################
 opensm_namespace: "jumanjiman"
-opensm_image: "{{ docker_registry ~ '/' if docker_registry | default else '' }}{{ opensm_namespace }}/opensm"
+opensm_image: "{{ docker_registry ~ '/' if docker_registry | default else 'docker.io/' }}{{ opensm_namespace }}/opensm"
 opensm_tag: "latest"
 opensm_image_full: "{{ opensm_image }}:{{ opensm_tag }}"
 

ansible/roles/opensm/tasks/deploy.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure OpenSM container is running
-  docker_container:
+  kayobe_container:
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
     network_mode: "host"
@@ -11,4 +11,5 @@
     state: started
     volumes: "{{ item.value.volumes }}"
   with_dict: "{{ opensm_services }}"
+  become: "{{ container_engine == 'podman' }}"
   when: item.value.enabled | bool

ansible/roles/opensm/tasks/destroy.yml

@@ -1,29 +1,20 @@
 ---
 - name: Ensure OpenSM container is stopped
-  docker_container:
+  kayobe_container:
     name: "{{ item.value.container_name }}"
     state: "absent"
   with_dict: "{{ opensm_services }}"
+  become: "{{ container_engine == 'podman' }}"
 
-- name: Check whether OpenSM volumes are present
-  command: docker volume inspect {{ volume }}
+- name: Check whether OpenSM volumes are absent
+  kayobe_container_volume:
+    name: "{{ volume }}"
+    state: absent
   changed_when: False
   with_subelements:
     - "{{ opensm_services }}"
     - volumes
   when: "'/' not in volume"
-  failed_when:
-    - volume_result.rc != 0
-    - "'no such volume' not in volume_result.stderr | lower"
   vars:
     volume: "{{ item.1.split(':')[0] }}"
-  register: volume_result
-
-- name: Ensure OpenSM volumes are absent
-  command: docker volume rm {{ volume }}
-  with_items: "{{ volume_result.results }}"
-  when:
-    - item is not skipped
-    - item.rc == 0
-  vars:
-    volume: "{{ item.item.1.split(':')[0] }}"
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/opensm/tasks/pull.yml

@@ -1,11 +1,11 @@
 ---
 - name: Pulling OpenSM container image
-  docker_image:
+  kayobe_container_image:
     name: "{{ item.value.image }}"
-    repository: "{{ item.value.image }}"
     source: pull
     state: present
   with_dict: "{{ opensm_services }}"
   when:
     - item.value.enabled
     - opensm_action != 'destroy'
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/opensm/tasks/stop.yml

@@ -1,9 +1,10 @@
 ---
 - name: Ensure OpenSM container is stopped
-  docker_container:
+  kayobe_container:
     image: "{{ item.value.image }}"
     name: "{{ item.value.container_name }}"
     state: stopped
   with_dict: "{{ opensm_services }}"
   when:
     - item.value.enabled | bool
+  become: "{{ container_engine == 'podman' }}"

ansible/roles/swift-rings/tasks/main.yml

@@ -26,7 +26,7 @@
         loop_var: service_name
 
     - name: Ensure Swift rings exist
-      docker_container:
+      kayobe_container:
         cleanup: true
         command: >-
           python3 {{ swift_container_build_path }}/swift-ring-builder.py
@@ -40,6 +40,7 @@
         volumes:
           - "{{ swift_ring_build_path }}/:{{ swift_container_build_path }}/"
       with_items: "{{ swift_service_names }}"
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Ensure Swift ring files are copied
       fetch:

ansible/seed-credentials.yml

@@ -17,10 +17,11 @@
 
     - name: Get clouds.yaml from Bifrost container
       command:
-        cmd: docker exec bifrost_deploy cat /root/.config/openstack/clouds.yaml
+        cmd: "{{ container_engine }} exec bifrost_deploy cat /root/.config/openstack/clouds.yaml"
       changed_when: false
       register: clouds_yaml
       no_log: true
+      become: "{{ container_engine == 'podman' }}"
 
     - name: Write clouds.yaml
       copy:
@@ -40,6 +41,7 @@
         clouds: "{{ clouds_yaml.stdout | from_yaml }}"
         cacerts: "{{ clouds.clouds.values() | selectattr('cacert', 'defined') | map(attribute='cacert') | list }}"
       command:
-        cmd: docker cp bifrost_deploy:{{ cacerts[0] }} {{ openstack_config_dir }}/bifrost.crt
+        cmd: "{{ container_engine }} cp bifrost_deploy:{{ cacerts[0] }} {{ openstack_config_dir }}/bifrost.crt"
       changed_when: false
       when: cacerts | length > 0
+      become: "{{ container_engine == 'podman' }}"

ansible/seed-host-configure.yml

@@ -25,5 +25,5 @@
 - import_playbook: "kolla-ansible-user.yml"
 - import_playbook: "kolla-pip.yml"
 - import_playbook: "kolla-target-venv.yml"
-- import_playbook: "docker.yml"
+- import_playbook: "container-engine.yml"
 - import_playbook: "docker-registry.yml"

ansible/seed-ipa-build.yml

@@ -45,11 +45,12 @@
 
         - name: Copy Ironic Python Agent images into /httpboot
           command: >
-            docker exec bifrost_deploy
+            {{ container_engine }} exec bifrost_deploy
             bash -c 'ansible -vvvv target
             -i /bifrost/playbooks/inventory/target
             -m copy
             -a "src=/etc/bifrost/{{ item }} dest=/httpboot/{{ item }}"
             -e "ansible_python_interpreter=/var/lib/kolla/venv/bin/python"'
           with_items: "{{ ipa_images }}"
+          become: "{{ container_engine == 'podman' }}"
       when: ipa_build_images | bool

ansible/seed-service-upgrade-prep.yml

@@ -7,7 +7,7 @@
     - block:
         - name: Find IPA deployment images
           find:
-            path: /var/lib/docker/volumes/bifrost_httpboot/_data
+            path: "{{ container_engine_volumes_path }}/bifrost_httpboot/_data"
             patterns:
               # Specify filenames individually to avoid movind previously moved
               # images.
@@ -40,9 +40,10 @@
     # the return code, since 2 means that the DB is not compatible
     - name: Perform ironic online data migrations
       command: >
-        docker exec bifrost_deploy
+        {{ container_engine }} exec bifrost_deploy
         bash -c '
         if [[ -f /etc/ironic/ironic.conf ]]; then
             ironic-dbsync online_data_migrations
         fi'
       changed_when: true
+      become: "{{ container_engine == 'podman' }}"

dev/ovs-vsctl

@@ -1,4 +1,9 @@
 #!/usr/bin/env bash
 
+CONTAINER_ENGINE="docker"
 
-sudo docker exec openvswitch_vswitchd ovs-vsctl "$@"
+if sudo podman inspect openvswitch_vswitchd >/dev/null 2>&1; then
+    CONTAINER_ENGINE="podman"
+fi
+
+sudo ${CONTAINER_ENGINE} exec openvswitch_vswitchd ovs-vsctl "$@"

doc/source/administration/seed.rst

@@ -89,9 +89,16 @@ The seed host runs various services required for a standalone Ironic
 deployment. These all run in a single ``bifrost_deploy`` container.
 
 It can often be helpful to execute a shell in the bifrost container for
-diagnosing operational issues::
+diagnosing operational issues:
 
-    $ docker exec -it bifrost_deploy bash
+.. note::
+
+   Examples show the commands when using Docker as the container engine. If
+   using Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
+.. code-block:: console
+
+   $ docker exec -it bifrost_deploy bash
 
 Services are run via Systemd::
 
@@ -133,8 +140,13 @@ the seed.
 Backup
 ^^^^^^
 
+.. note::
+
+    Examples show the commands when using Docker as the container engine. If using
+    Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
 It should be safe to keep services running during the backup, but for maximum
-safety they may optionally be stopped::
+safety they may optionally be stopped:
 
     docker exec -it bifrost_deploy systemctl stop ironic ironic-inspector
 
@@ -150,6 +162,11 @@ If the services were stopped prior to the backup, start them again::
 Restore
 ^^^^^^^
 
+.. note::
+
+   Examples show the commands when using Docker as the container engine. If using
+   Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
 Prior to restoring the database, the Ironic and Ironic Inspector services
 should be stopped::
 

doc/source/configuration/reference/bifrost.rst

@@ -126,6 +126,11 @@ The disk image is built during the deployment of seed services. It is worth
 noting that currently, the image will not be rebuilt if it already exists. To
 force rebuilding the image, it is necessary to remove the file. On the seed:
 
+.. note::
+
+    Example shows the commands when using Docker as the container engine. If using
+    Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
 .. code-block:: console
 
    docker exec bifrost_deploy rm /httpboot/deployment_image.qcow2

doc/source/configuration/reference/docker-registry.rst

@@ -106,16 +106,16 @@ specify the path to the password store.
 Using the registry
 ==================
 
-Enabling the registry does not automatically set the configuration for Docker
-engine to use it. This should be done via the :ref:`docker_registry variable
-<configuration-hosts-docker>`.
+Enabling the registry does not automatically set the configuration for the
+container engine to use it. This should be done via the :ref:`docker_registry
+or podman_registry variables <configuration-hosts-container-engine>`.
 
 TLS
 ---
 
 If the registry is using a privately signed TLS certificate, it is necessary to
 :ref:`configure Docker engine with the CA certificate
-<configuration-hosts-docker>`.
+<configuration-hosts-container-engine>`.
 
 If TLS is enabled, Docker engine should be configured to use HTTPS to
 communicate with it:

doc/source/configuration/reference/hosts.rst

@@ -1108,12 +1108,48 @@ Kolla-Ansible Remote Virtual Environment
 See :ref:`configuration-kolla-ansible-venv` for information about remote Python
 virtual environments for Kolla Ansible.
 
-.. _configuration-hosts-docker:
+.. _configuration-hosts-container-engine:
 
-Docker Engine
-=============
+Container Engine
+================
 *tags:*
   | ``docker``
+  | ``podman``
+
+Kayobe supports the following container engines:
+
+- Podman
+- Docker
+
+The container engine can be configured by setting ``container_engine`` in
+``container-engine.yml``. The default container engine is ``docker``. For
+example, to use podman:
+
+.. code-block:: yaml
+   :caption: ``container-engine.yml``
+
+   container_engine: podman
+
+Podman
+------
+
+The ``openstack.kolla.podman`` role is used to configure Podman. Please refer
+to the `role defaults
+<https://github.com/openstack/ansible-collection-kolla/blob/master/roles/podman/defaults/main.yml>`__
+for a list of configuration options (making sure to switch to correct branch).
+These may be overridden via variables in the Ansible inventory or by using
+extra vars, For example, in ``container-engine.yml``:
+
+.. code-block:: yaml
+   :caption: ``container-engine.yml``
+
+   podman_storage_driver: overlay
+
+A private image registry may be configured via ``podman_registry``. If using an
+insecure (HTTP) registry, set ``podman_registry_insecure`` to ``true``.
+
+Docker
+------
 
 The ``docker_storage_driver`` variable sets the Docker storage driver, and by
 default the ``overlay2`` driver is used. See :ref:`configuration-hosts-lvm` for

doc/source/configuration/reference/kolla.rst

@@ -85,7 +85,8 @@ affect :ref:`Kolla Ansible configuration <configuration-kolla-ansible-global>`.
     Docker namespace to use for Kolla images. Default is ``kolla``.
 ``kolla_docker_registry``
     URL of docker registry to use for Kolla images. Default is to use the value
-    of ``docker_registry`` variable (see :ref:`configuration-hosts-docker`).
+    of ``docker_registry`` or ``podman_registry``, depending on the value of
+    ``container_engine`` (see :ref:`configuration-hosts-container-engine`).
 ``kolla_docker_registry_username``
     Username to use to access a docker registry. Default is not set, in which
     case the registry will be used without authentication.

doc/source/deployment.rst

@@ -265,13 +265,20 @@ Use this user to access the seed::
 
     $ ssh <kayobe ansible user>@<seed VM IP>
 
-To see the active Docker containers::
+To see the active containers:
 
-    $ docker ps
+.. note::
+
+   Examples show the commands when using Docker as the container engine. If
+   using Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
+.. code-block:: console
+
+   $ docker ps
 
 Leave the seed VM and return to the shell on the Ansible control host::
 
-    $ exit
+   $ exit
 
 .. _deployment-infrastructure-vms:
 
@@ -406,7 +413,14 @@ will be the factory default and can be performed by powering them on.
 On completion of the discovery process, the overcloud nodes should be
 registered with the ironic service running in the seed host's
 ``bifrost_deploy`` container.  The node inventory can be viewed by executing
-the following on the seed::
+the following on the seed:
+
+.. note::
+
+    Example shows the commands when using Docker as the container engine. If using
+    Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
+.. code-block:: console
 
     $ docker exec -it bifrost_deploy bash
     (bifrost_deploy) $ export OS_CLOUD=bifrost
@@ -480,7 +494,14 @@ Provisioning
    nodes without names from being accessed via SSH after provisioning. To avoid
    this issue, ensure that all Ironic nodes in the Bifrost inventory are named.
    This may be achieved via :ref:`autodiscovery <deployment-discovery>`, or
-   manually, e.g. from the seed::
+   manually, e.g. from the seed:
+
+    .. note::
+
+        Example shows the commands when using Docker as the container engine. If using
+        Podman, simply change ``docker`` for ``sudo podman`` in the command.
+
+    .. code-block:: console
 
        $ docker exec -it bifrost_deploy bash
        (bifrost_deploy) $ export OS_CLOUD=bifrost

etc/kayobe/compute.yml

@@ -76,7 +76,9 @@
 #compute_lvm_groups_extra:
 
 # Whether a 'data' LVM volume group should exist on compute hosts. By default
-# this contains a 'docker-volumes' logical volume for Docker volume storage.
+# this contains a 'docker-volumes' logical volume for container volume storage
+# if using the docker container engine, or a 'podman-volumes' logical volume
+# for container volume storage if using the podman container engine.
 # Default is false.
 #compute_lvm_group_data_enabled:
 
@@ -88,18 +90,33 @@
 # invalid value to require configuration.
 #compute_lvm_group_data_disks:
 
+# List of LVM logical volumes for the data volume group when using docker.
+#compute_lvm_group_data_docker_lvs:
+
+# List of LVM logical volumes for the data volume group when using podman.
+#compute_lvm_group_data_podman_lvs:
+
 # List of LVM logical volumes for the data volume group.
 #compute_lvm_group_data_lvs:
 
 # Docker volumes LVM backing volume.
 #compute_lvm_group_data_lv_docker_volumes:
 
+# Podman volumes LVM backing volume.
+#compute_lvm_group_data_lv_podman_volumes:
+
 # Size of docker volumes LVM backing volume.
 #compute_lvm_group_data_lv_docker_volumes_size:
 
 # Filesystem for docker volumes LVM backing volume. ext4 allows for shrinking.
 #compute_lvm_group_data_lv_docker_volumes_fs:
 
+# Size of podman volumes LVM backing volume.
+#compute_lvm_group_data_lv_podman_volumes_size:
+
+# Filesystem for podman volumes LVM backing volume. ext4 allows for shrinking.
+#compute_lvm_group_data_lv_podman_volumes_fs:
+
 ###############################################################################
 # Compute node sysctl configuration.
 

etc/kayobe/container-engine.yml

@@ -0,0 +1,80 @@
+---
+###############################################################################
+# Container engine configuration
+
+# Configures the container engine. Default is 'docker'.
+#container_engine:
+
+# Path to container volumes. Default is '{{ podman_volumes_path }}' if
+# 'container_engine' is set to podman, otherwise '{{ docker_volumes_path }}'.
+#container_engine_volumes_path:
+
+###############################################################################
+# Docker configuration.
+
+# Name of the docker storage driver. Default is 'overlay2'.
+#docker_storage_driver:
+
+# Name of the docker storage LVM volume group.
+#docker_storage_volume_group:
+
+# Name of the docker storage data LVM volume.
+#docker_storage_volume_thinpool:
+
+# Size of the docker storage data LVM volume (see lvol module size argument).
+#docker_storage_volume_thinpool_size:
+
+# Name of the docker storage metadata LVM volume.
+#docker_storage_volume_thinpool_meta:
+
+# Size of the docker storage metadata LVM volume (see lvol module size
+# argument).
+#docker_storage_volume_thinpool_meta_size:
+
+# URL of docker registry
+#docker_registry:
+
+# Whether docker should be configured to use an insecure registry.
+# Default is false, unless docker_registry_enabled is true and
+# docker_registry_enable_tls is false.
+#docker_registry_insecure:
+
+# CA of docker registry
+#docker_registry_ca:
+
+# List of Docker registry mirrors.
+#docker_registry_mirrors:
+
+# Enable live-restore on docker daemon
+#docker_daemon_live_restore:
+
+# Path to docker runtime directory. Default is "", which means to use the
+# default location: '/var/lib/docker'.
+#docker_runtime_directory:
+
+# Path to docker volumes. Default is '{{ docker_runtime_directory |
+# default('/var/lib/docker', true) ~ '/volumes' }}"'.
+#docker_volumes_path:
+
+###############################################################################
+# Podman configuration.
+
+# URL of podman container registry
+#podman_registry:
+
+# Whether podman should be configured to use an insecure registry.
+# Default is false, unless docker_registry_enabled is true and
+# docker_registry_enable_tls is false.
+#podman_registry_insecure:
+
+# Path to podman runtime directory. Default is None, which means to use the
+# default location: '/var/lib/containers/storage'.
+#podman_runtime_directory:
+
+# Path to podman volumes. Default is '{{ podman_runtime_directory |
+# default('/var/lib/containers/storage', true) ~ '/volumes' }}"'.
+#podman_volumes_path:
+
+###############################################################################
+# Dummy variable to allow Ansible to accept this file.
+workaround_ansible_issue_8743: yes

etc/kayobe/docker.yml

@@ -1,43 +0,0 @@
----
-###############################################################################
-# Docker configuration.
-
-# Name of the docker storage driver. Default is 'overlay2'.
-#docker_storage_driver:
-
-# Name of the docker storage LVM volume group.
-#docker_storage_volume_group:
-
-# Name of the docker storage data LVM volume.
-#docker_storage_volume_thinpool:
-
-# Size of the docker storage data LVM volume (see lvol module size argument).
-#docker_storage_volume_thinpool_size:
-
-# Name of the docker storage metadata LVM volume.
-#docker_storage_volume_thinpool_meta:
-
-# Size of the docker storage metadata LVM volume (see lvol module size
-# argument).
-#docker_storage_volume_thinpool_meta_size:
-
-# URL of docker registry
-#docker_registry:
-
-# Whether docker should be configured to use an insecure registry.
-# Default is false, unless docker_registry_enabled is true and
-# docker_registry_enable_tls is false.
-#docker_registry_insecure:
-
-# CA of docker registry
-#docker_registry_ca:
-
-# List of Docker registry mirrors.
-#docker_registry_mirrors:
-
-# Enable live-restore on docker daemon
-#docker_daemon_live_restore:
-
-###############################################################################
-# Dummy variable to allow Ansible to accept this file.
-workaround_ansible_issue_8743: yes

playbooks/kayobe-overcloud-base/overrides.yml.j2

@@ -56,3 +56,6 @@ kolla_ironic_pxe_append_params_extra:
 # NOTE(bbezak): Kolla does not build CentOS Stream 9 container images.
 # Using Rocky Linux 9 images on CentOS Stream 9 in CI.
 kolla_base_distro: "{% raw %}{{ 'rocky' if os_distribution == 'centos' else os_distribution }}{% endraw %}"
+
+# Support overriding container_engine
+container_engine: "{{ container_engine }}"

playbooks/kayobe-seed-base/overrides.yml.j2

@@ -49,3 +49,6 @@ overcloud_dib_elements_extra:
 # NOTE(bbezak): Kolla does not build CentOS Stream 9 container images.
 # Using Rocky Linux 9 images on CentOS Stream 9 in CI.
 kolla_base_distro: "{% raw %}{{ 'rocky' if os_distribution == 'centos' else os_distribution }}{% endraw %}"
+
+# Support overriding container_engine
+container_engine: "{{ container_engine }}"

releasenotes/notes/adds-support-for-podman-8ff158369905c077.yaml

@@ -0,0 +1,20 @@
+---
+features:
+  - |
+    Adds support for the Podman container engine as an alternative to Docker.
+    See :kayobe-doc:`Kayobe docs <configuration/reference/hosts.html#container-engine>`
+    for futher information.
+upgrade:
+  - |
+    The ``docker`` group has been renamed to ``container-engine``.
+  - |
+    The kayobe-config configuration file ``docker.yml`` has been renamed to
+    ``container-engine.yml``.
+issues:
+  - |
+    On Ubuntu 22.04, when using podman, containers may get stuck in the
+    ``creating`` state when using a ``6.5.x`` series (or newer) kernel. See
+    `LP#2056210
+    <https://bugs.launchpad.net/ansible-collection-kolla/+bug/2056210>`__ for
+    more details. The bug has been fixed upstream in crun, but we are awaiting
+    a new Ubuntu 22.04 package to be released.

roles/kayobe-diagnostics/files/get_logs.sh

@@ -11,8 +11,37 @@
 
 set +o errexit
 
+copy_container_engine_logs() {
+    container_engine=$1
+
+    # container_engine related information
+    ($container_engine info && $container_engine images && $container_engine ps -a) > ${LOG_DIR}/system_logs/${container_engine}-info.txt
+
+    for container in $($container_engine ps -a --format "{{.Names}}"); do
+        #NOTE(wszumski): Podman does not support --tail all like docker
+        $container_engine logs --tail -1 ${container} &> ${LOG_DIR}/${container_engine}_logs/${container}.txt
+    done
+}
+
+copy_bifrost_logs() {
+    container_engine=$1
+    for service in dnsmasq ironic-api ironic-conductor ironic-inspector mariadb nginx rabbitmq-server; do
+        mkdir -p ${LOG_DIR}/kolla/$service
+        $container_engine exec bifrost_deploy \
+            systemctl status $service -l -n 10000 > ${LOG_DIR}/kolla/$service/${service}-systemd-status.txt
+        $container_engine exec bifrost_deploy \
+            journalctl -u $service --no-pager > ${LOG_DIR}/kolla/$service/${service}-journal.txt
+    done
+    $container_engine exec -it bifrost_deploy \
+        journalctl --no-pager > ${LOG_DIR}/kolla/bifrost-journal.log
+    for d in dnsmasq.conf ironic ironic-inspector nginx/nginx.conf; do
+        $container_engine cp bifrost_deploy:/etc/$d ${LOG_DIR}/kolla_node_configs/bifrost/
+    done
+    $container_engine cp bifrost_deploy:/var/log/mariadb/mariadb.log ${LOG_DIR}/kolla/mariadb/
+}
+
 copy_logs() {
-    cp -rnL /var/lib/docker/volumes/kolla_logs/_data/* ${LOG_DIR}/kolla/
+    cp -rnL /var/log/kolla/* ${LOG_DIR}/kolla/
     if [[ -d ${CONFIG_DIR} ]]; then
         cp -rnL ${CONFIG_DIR}/etc/kayobe/* ${LOG_DIR}/kayobe_configs
         cp -rnL ${CONFIG_DIR}/etc/kolla/* ${LOG_DIR}/kolla_configs
@@ -43,6 +72,7 @@ copy_logs() {
     if [[ -x "$(command -v journalctl)" ]]; then
         journalctl --no-pager > ${LOG_DIR}/system_logs/syslog.txt
         journalctl --no-pager -u docker.service > ${LOG_DIR}/system_logs/docker.log
+        journalctl --no-pager -u podman.service > ${LOG_DIR}/system_logs/podman.log
         journalctl --no-pager -u vbmcd.service > ${LOG_DIR}/system_logs/vbmcd.log
         journalctl --no-pager -u NetworkManager.service > ${LOG_DIR}/system_logs/NetworkManager.log
     else
@@ -97,28 +127,16 @@ copy_logs() {
     # available entropy
     cat /proc/sys/kernel/random/entropy_avail > ${LOG_DIR}/system_logs/entropy_avail.txt
 
-    # docker related information
-    (docker info && docker images && docker ps -a) > ${LOG_DIR}/system_logs/docker-info.txt
-
-    for container in $(docker ps -a --format "{{.Names}}"); do
-        docker logs --tail all ${container} &> ${LOG_DIR}/docker_logs/${container}.txt
-    done
+    copy_container_engine_logs docker
+    copy_container_engine_logs podman
 
     # Bifrost: grab config files and logs from the container.
     if [[ $(docker ps -q -f name=bifrost_deploy) ]]; then
-        for service in dnsmasq ironic-api ironic-conductor ironic-inspector mariadb nginx rabbitmq-server; do
-            mkdir -p ${LOG_DIR}/kolla/$service
-            docker exec bifrost_deploy \
-                systemctl status $service -l -n 10000 > ${LOG_DIR}/kolla/$service/${service}-systemd-status.txt
-            docker exec bifrost_deploy \
-                journalctl -u $service --no-pager > ${LOG_DIR}/kolla/$service/${service}-journal.txt
-        done
-        docker exec -it bifrost_deploy \
-            journalctl --no-pager > ${LOG_DIR}/kolla/bifrost-journal.log
-        for d in dnsmasq.conf ironic ironic-inspector nginx/nginx.conf; do
-            docker cp bifrost_deploy:/etc/$d ${LOG_DIR}/kolla_node_configs/bifrost/
-        done
-        docker cp bifrost_deploy:/var/log/mariadb/mariadb.log ${LOG_DIR}/kolla/mariadb/
+        copy_bifrost_logs docker
+    fi
+
+    if [[ $(podman ps -q -f name=bifrost_deploy) ]]; then
+        copy_bifrost_logs podman
     fi
 
     # IPA build logs
@@ -137,7 +155,7 @@ copy_logs() {
     # logs.openstack.org clicking results in the browser shows the
     # files, rather than trying to send it to another app or make you
     # download it, etc.
-    for f in $(find ${LOG_DIR}/{system_logs,kolla,docker_logs} -name "*.log"); do
+    for f in $(find ${LOG_DIR}/{system_logs,kolla,docker_logs,podman_logs} -name "*.log"); do
         mv $f ${f/.log/.txt}
     done
 

roles/kayobe-diagnostics/tasks/pre.yml

@@ -10,6 +10,7 @@
     state: "directory"
     mode: 0777
   with_items:
+    - "podman_logs"
     - "docker_logs"
     - "kayobe_configs"
     - "kolla_configs"

zuul.d/jobs.yaml

@@ -106,6 +106,7 @@
       is_slurp: "{{ 'slurp' in zuul.job }}"
       previous_release: "{{ '2024.1' if is_slurp else '2024.1' }}"
       tls_enabled: false
+      container_engine: 'docker'
       ironic_boot_mode: "bios"
 
 - job:
@@ -130,11 +131,25 @@
     parent: kayobe-overcloud-base
     nodeset: kayobe-rocky9
 
+- job:
+    name: kayobe-overcloud-rocky9-podman
+    parent: kayobe-overcloud-base
+    nodeset: kayobe-rocky9
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-overcloud-ubuntu-noble
     parent: kayobe-overcloud-base
     nodeset: kayobe-ubuntu-noble
 
+- job:
+    name: kayobe-overcloud-ubuntu-noble-podman
+    parent: kayobe-overcloud-base
+    nodeset: kayobe-ubuntu-noble
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-overcloud-tls-base
     parent: kayobe-overcloud-base
@@ -209,11 +224,25 @@
     parent: kayobe-seed-base
     nodeset: kayobe-rocky9
 
+- job:
+    name: kayobe-seed-rocky9-podman
+    parent: kayobe-seed-base
+    nodeset: kayobe-rocky9
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-seed-ubuntu-noble
     parent: kayobe-seed-base
     nodeset: kayobe-ubuntu-noble
 
+- job:
+    name: kayobe-seed-ubuntu-noble-podman
+    parent: kayobe-seed-base
+    nodeset: kayobe-ubuntu-noble
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-seed-images-base
     parent: kayobe-seed-base
@@ -243,6 +272,13 @@
 
 # This job builds default overcloud images but skips the build of bifrost seed
 # images which are currently timing out on Ubuntu Jammy.
+- job:
+    name: kayobe-seed-images-rocky9-podman
+    parent: kayobe-seed-images-base
+    nodeset: kayobe-rocky9
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-seed-images-ubuntu-noble
     parent: kayobe-seed-images-base
@@ -250,6 +286,13 @@
     vars:
       seed_container_image_regex: "^base"
 
+- job:
+    name: kayobe-seed-images-ubuntu-noble-podman
+    parent: kayobe-seed-images-base
+    nodeset: kayobe-ubuntu-noble
+    vars:
+      container_engine: podman
+
 - job:
     name: kayobe-overcloud-host-configure-base
     parent: kayobe-overcloud-base

zuul.d/project.yaml

@@ -15,8 +15,10 @@
         - kayobe-tox-ansible
         - kayobe-tox-molecule
         - kayobe-overcloud-rocky9
+        - kayobe-overcloud-rocky9-podman
         - kayobe-overcloud-centos9s
         - kayobe-overcloud-ubuntu-noble
+        - kayobe-overcloud-ubuntu-noble-podman
         - kayobe-overcloud-tls-rocky9
         - kayobe-overcloud-host-configure-rocky9
         - kayobe-overcloud-host-configure-centos9s
@@ -24,8 +26,12 @@
         - kayobe-overcloud-upgrade-rocky9
         - kayobe-overcloud-upgrade-ubuntu-jammy
         - kayobe-seed-rocky9
+        - kayobe-seed-rocky9-podman
         - kayobe-seed-ubuntu-noble
+        - kayobe-seed-ubuntu-noble-podman:
+            voting: false
         - kayobe-seed-images-rocky9
+        - kayobe-seed-images-rocky9-podman
         - kayobe-seed-upgrade-rocky9
         - kayobe-seed-upgrade-ubuntu-jammy
         - kayobe-seed-vm-rocky9
@@ -43,13 +49,16 @@
         - kayobe-tox-ansible
         - kayobe-tox-molecule
         - kayobe-overcloud-rocky9
+        - kayobe-overcloud-rocky9-podman
         - kayobe-overcloud-ubuntu-noble
+        - kayobe-overcloud-ubuntu-noble-podman
         - kayobe-overcloud-tls-rocky9
         - kayobe-overcloud-host-configure-rocky9
         - kayobe-overcloud-host-configure-ubuntu-noble
         - kayobe-overcloud-upgrade-rocky9
         - kayobe-overcloud-upgrade-ubuntu-jammy
         - kayobe-seed-rocky9
+        - kayobe-seed-rocky9-podman
         - kayobe-seed-ubuntu-noble
         - kayobe-seed-upgrade-rocky9
         - kayobe-seed-upgrade-ubuntu-jammy
@@ -62,3 +71,4 @@
       jobs:
         - kayobe-seed-images-centos9s
         - kayobe-seed-images-ubuntu-noble
+        - kayobe-seed-images-ubuntu-noble-podman