Add a simple command to dump Ansible configuration for one or more hosts

ansible/dump-config.yml

@@ -1,22 +1,37 @@
 ---
-- hosts: all
-  gather_facts: "{{ gather_facts | default(False) }}"
+# Variables:
+# - dump_path: Path to directory to store variable dumps (optional)
+# - dump_facts: Whether to include gathered facts in the dump (optional)
+# - dump_hosts: Group/host specifier for hosts to dump (optional)
+# - dump_var_name: Name of the option to dump (optional)
+
+- name: Dump configuration from one or more hosts
+  hosts: "{{ dump_hosts | default('all') }}"
+  gather_facts: "{{ dump_facts | default(False) }}"
   vars:
-    dump_config_path: /tmp/kayobe-dump-config
+    dump_path: /tmp/kayobe-dump-config
   tasks:
     - name: Create configuration dump directory
       file:
-        path: "{{ dump_config_path }}"
+        path: "{{ dump_path }}"
         state: directory
 
     - name: Write host config to file
       local_action:
         module: copy
         content: "{{ hostvars[inventory_hostname] | to_nice_yaml }}"
-        dest: "{{ dump_config_path }}/{{ inventory_hostname }}.yml"
+        dest: "{{ dump_path }}/{{ inventory_hostname }}.yml"
+      when: "{{ dump_var_name is not defined }}"
 
-    - name: Write merged config to file
+    - name: Write host variable to file
       local_action:
         module: copy
-        content: "{{ hostvars | merge_config | to_nice_yaml }}"
-        dest: "{{ dump_config_path }}/merged.yml
+        content: "{{ hostvars[inventory_hostname][dump_var_name] | to_nice_yaml }}"
+        dest: "{{ dump_path }}/{{ inventory_hostname }}.yml"
+      when: "{{ dump_var_name is defined }}"
+
+#    - name: Write merged config to file
+#      local_action:
+#        module: copy
+#        content: "{{ hostvars | merge_config | to_nice_yaml }}"
+#        dest: "{{ dump_path }}/merged.yml

kayobe-config-dump

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+dump_dir=$(mktemp -d)
+
+# Execute the dump-config.yml playbook.
+./kayobe-playbook \
+    ansible/dump-config.yml \
+    -e dump_path=${dump_dir} \
+    $@ \
+    > /dev/null
+
+result=$?
+
+if [[ $result -eq 0 ]]; then
+    cat ${dump_dir}/*.yml
+fi
+rm -rf ${dump_dir}
+exit $result