Merge "PSP Removal in support of transition to k8s 1.25/1.26"
This commit is contained in:
Zuul
Gerrit Code Review
commit
391e222c6e
@ -255,7 +255,7 @@
|
||||
.. |index-security-84d0d8aa401b| replace:: :ref:`Security <index-security-84d0d8aa401b>`
|
||||
.. |pod-security-admission-controller-8e9e6994100f| replace:: :ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
.. |install-update-the-starlingx-rest-and-web-server-certificate| replace:: :ref:`Install/Update the StarlingX Rest and Web Server Certificate <install-update-the-starlingx-rest-and-web-server-certificate>`
|
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.. |pod-security-policies| replace:: :ref:`Pod Security Policies <pod-security-policies>`
|
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.. .. |pod-security-policies| replace:: :ref:`Pod Security Policies <pod-security-policies>`
|
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.. |remove-portieris| replace:: :ref:`Remove Portieris <remove-portieris>`
|
||||
.. |delete-ldap-linux-accounts-7de0782fbafd| replace:: :ref:`Delete LDAP Linux Accounts <delete-ldap-linux-accounts-7de0782fbafd>`
|
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.. |security-rest-api-access| replace:: :ref:`REST API Access <security-rest-api-access>`
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@ -307,14 +307,14 @@
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.. |kubernetes-certificates-f4196d7cae9c| replace:: :ref:`Kubernetes Certificates <kubernetes-certificates-f4196d7cae9c>`
|
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.. |security-access-the-gui| replace:: :ref:`Access the GUI <security-access-the-gui>`
|
||||
.. |install-portieris| replace:: :ref:`Install Portieris <install-portieris>`
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.. |disable-pod-security-policy-checking| replace:: :ref:`Disable Pod Security Policy Checking <disable-pod-security-policy-checking>`
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.. .. |disable-pod-security-policy-checking| replace:: :ref:`Disable Pod Security Policy Checking <disable-pod-security-policy-checking>`
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.. |configure-local-cli-access| replace:: :ref:`Configure Local CLI Access <configure-local-cli-access>`
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||||
.. |deprovision-ldap-server-authentication| replace:: :ref:`Deprovision LDAP Server Authentication <deprovision-ldap-server-authentication>`
|
||||
.. |overview-of-ldap-servers| replace:: :ref:`Overview of LDAP Servers <overview-of-ldap-servers>`
|
||||
.. |etcd-certificates-c1fc943e4a9c| replace:: :ref:`Etcd Certificates <etcd-certificates-c1fc943e4a9c>`
|
||||
.. |install-the-kubernetes-dashboard| replace:: :ref:`Install the Kubernetes Dashboard <install-the-kubernetes-dashboard>`
|
||||
.. |enable-https-access-for-starlingx-rest-and-web-server-endpoints| replace:: :ref:`Enable HTTPS Access for StarlingX REST and Web Server Endpoints <enable-https-access-for-starlingx-rest-and-web-server-endpoints>`
|
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.. |assign-pod-security-policies| replace:: :ref:`Assign Pod Security Policies <assign-pod-security-policies>`
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.. .. |assign-pod-security-policies| replace:: :ref:`Assign Pod Security Policies <assign-pod-security-policies>`
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.. |install-vault| replace:: :ref:`Install Vault <install-vault>`
|
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.. |configure-vault| replace:: :ref:`Configure Vault Using the Vault REST API <configure-vault>`
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.. |configure-rest-api-applications-and-web-administration-server-certificates-after-installation-6816457ab95f| replace:: :ref:`Configure REST API Applications and Web Administration Server certificate <configure-rest-api-applications-and-web-administration-server-certificates-after-installation-6816457ab95f>`
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@ -357,7 +357,7 @@
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.. |portieris-clusterimagepolicy-and-imagepolicy-configuration| replace:: :ref:`Portieris ClusterImagePolicy and ImagePolicy Configuration <portieris-clusterimagepolicy-and-imagepolicy-configuration>`
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.. |selectively-disable-ssh-for-local-openldap-and-wad-users-e5aaf09e790c| replace:: :ref:`Selectively Disable SSH for Local OpenLDAP and WAD Users <selectively-disable-ssh-for-local-openldap-and-wad-users-e5aaf09e790c>`
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.. |security-cert-manager| replace:: :ref:`Cert Manager <security-cert-manager>`
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.. |enable-pod-security-policy-checking| replace:: :ref:`Enable Pod Security Policy Checking <enable-pod-security-policy-checking>`
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.. .. |enable-pod-security-policy-checking| replace:: :ref:`Enable Pod Security Policy Checking <enable-pod-security-policy-checking>`
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.. |starlingx-rest-api-applications-and-the-web-administration-server| replace:: :ref:`StarlingX REST API Applications and the Web Administration Server Certificate <starlingx-rest-api-applications-and-the-web-administration-server>`
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.. |starlingx-openstack-kubernetes-from-stsadmin-account-login| replace:: :ref:`For StarlingX, Platform OpenStack and Kubernetes CLIs from the 'sysadmin' Linux Account Login <starlingx-openstack-kubernetes-from-stsadmin-account-login>`
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.. |configure-users-groups-and-authorization| replace:: :ref:`Configure Users, Groups, and Authorization <configure-users-groups-and-authorization>`
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@ -23,8 +23,6 @@ General Configuration
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system_config
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time_sync_config
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|
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|
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|
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------------------------
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Kubernetes Configuration
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------------------------
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@ -34,7 +32,6 @@ Kubernetes Configuration
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|
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k8s_auth_winactivedir
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k8s_persistent_vol
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k8s_pod_sec_policies
|
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k8s_res_policies
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k8s_upgrade
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||||
|
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|
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@ -1,138 +0,0 @@
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=====================
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Pod Security Policies
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=====================
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|
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.. note::
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|
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PodSecurityPolicy (PSP) ONLY applies if running on K8S v1.24 or earlier.
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and removed from K8S v1.25.
|
||||
Instead of using PodSecurityPolicy, you can enforce similar restrictions on Pods using
|
||||
:ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
|
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.. note::
|
||||
|
||||
This guide was replaced by: :ref:`Pod Security Policies <pod-security-policies>`
|
||||
|
||||
This guide describes how to enable Kubernetes pod security policies.
|
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|
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.. contents::
|
||||
:local:
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:depth: 1
|
||||
|
||||
--------
|
||||
Overview
|
||||
--------
|
||||
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Pod Security Policies (PSPs) enable fine-grained authorization of pod creation
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and updates. :abbr:`PSPs (Pod Security Policies)` control access to security
|
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sensitive aspects of pod specifications such as running of privileged
|
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containers, use of host file system, running as root, etc. PSPs define a set of
|
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conditions that a pod must run with in order to be accepted into the system, as
|
||||
well as defaults for the related fields. PSPs are assigned to users using
|
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Kubernetes RBAC RoleBindings. See
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https://kubernetes.io/docs/concepts/policy/pod-security-policy/ for details.
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|
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When enabled, pod security policy checking authorizes all Kubernetes API
|
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commands against the PSPs which the issuer of the command has access to. If
|
||||
there are no PSPs defined in the system or the issuer does not have access to
|
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any PSPs, PSP checking will fail to authorize the command.
|
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|
||||
StarlingX provides a system service parameter to enable pod security policy
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checking. Setting this service parameter also creates two PSPs (privileged and
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restricted). Users with the cluster-admin role can access all resources and
|
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therefore have PSPs to authorize against. The parameter also creates two
|
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corresponding roles for specifying access to these PSPs (``privileged-psp-user``
|
||||
and ``restricted-psp-user``) for binding to other non-admin type subjects.
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||||
|
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-------------------
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Enable PSP checking
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||||
-------------------
|
||||
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Perform the following steps.
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#. Set the Kubernetes ``kube_apiserver admission_plugins`` system parameter to
|
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include PodSecurityPolicy.
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|
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::
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|
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system service-parameter-add kubernetes kube_apiserver admission_plugins=PodSecurityPolicy
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|
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#. Apply the Kubernetes system parameters.
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||||
::
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||||
|
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system service-parameter-apply kubernetes
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Use the following commands to view the automatically added PSPs, as well as
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privileged and restricted PSPs.
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::
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kubectl get psp
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kubectl describe psp privileged
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kubectl describe psp restricted
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|
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-------------------------------
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Update role for non-admin users
|
||||
-------------------------------
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||||
|
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After enabling Pod security policy checking in StarlingX, all users
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||||
with the cluster-admin role are unaffected because they have access to the
|
||||
privileged PSP. However, other users require a new ``RoleBinding`` to either
|
||||
the privileged-psp-user role or the restricted-psp-user role.
|
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|
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For example, the following ``RoleBinding`` assigns the restricted PSP to
|
||||
``basic-user`` in the ``billing-dept-ns`` namespace:
|
||||
|
||||
::
|
||||
|
||||
apiVersion: rbac.authorization.k8s.io/v1
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||||
kind: RoleBinding
|
||||
metadata:
|
||||
name: basic-restricted-psp-users
|
||||
namespace: billing-dept-ns
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||||
subjects:
|
||||
- kind: ServiceAccount
|
||||
name: basic-user
|
||||
namespace: kube-system
|
||||
roleRef:
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
kind: ClusterRole
|
||||
name: restricted-psp-user
|
||||
|
||||
This enables ``basic-user`` to create pods in the ``billing-dept-ns`` namespace
|
||||
subject to the restricted PSP policy.
|
||||
|
||||
---------------------------------
|
||||
Bind to the PSP for the namespace
|
||||
---------------------------------
|
||||
|
||||
An unexpected behavior when PSP checking is enabled is that the above
|
||||
``basic-user`` is able to create pods in ``billing-dept-ns`` (subject to the
|
||||
restricted PSP), however they are **not** able to create deployments. This is
|
||||
because the pods of the deployment are created using the replicaSet
|
||||
controller’s serviceAccount and RBAC bindings, not the ``basic-user``
|
||||
serviceAccount and RBAC bindings.
|
||||
|
||||
The typical approach for addressing this is to bind all the serviceAccounts in
|
||||
kube-system (which includes replicaSet controller serviceAccounts) to the
|
||||
appropriate PSP for the specific namespace.
|
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|
||||
For example, the following RoleBinding assigns the restricted PSP to all
|
||||
kube-system serviceAccounts operating in the ``billing-dept-ns`` namespace.
|
||||
|
||||
::
|
||||
|
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apiVersion: rbac.authorization.k8s.io/v1
|
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kind: RoleBinding
|
||||
metadata:
|
||||
name: kube-system-restricted-psp-users
|
||||
namespace: billing-dept-ns
|
||||
roleRef:
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||||
apiGroup: rbac.authorization.k8s.io
|
||||
kind: ClusterRole
|
||||
name: restricted-psp-user
|
||||
subjects:
|
||||
- kind: Group
|
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name: system:serviceaccounts:kube-system
|
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apiGroup: rbac.authorization.k8s.io
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@ -1,3 +1,4 @@
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||||
|
||||
=================
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||||
Resource Policies
|
||||
=================
|
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@ -35,7 +36,7 @@ Specifically a LimitRange policy provides constraints that can:
|
||||
See https://kubernetes.io/docs/concepts/policy/limit-range/ for more details.
|
||||
|
||||
An example of LimitRange policies for the ``billing-dept-ns`` namespace in the
|
||||
:doc:`k8s_pod_sec_policies` example is shown below:
|
||||
:ref:`private-namespace-and-restricted-rbac` example is shown below:
|
||||
|
||||
::
|
||||
|
||||
@ -96,6 +97,8 @@ An example of LimitRange policies for the ``billing-dept-ns`` namespace in the
|
||||
memory: 10
|
||||
type: Pod
|
||||
|
||||
|
||||
|
||||
-------------
|
||||
ResourceQuota
|
||||
-------------
|
||||
@ -109,19 +112,3 @@ namespaced resource types such as secrets, configmaps, and others.
|
||||
|
||||
See https://kubernetes.io/docs/concepts/policy/resource-quotas/ for more details.
|
||||
|
||||
An example of ResourceQuota policies for the ``billing-dept-ns`` namespace of
|
||||
the :doc:`k8s_pod_sec_policies` example is shown below:
|
||||
|
||||
::
|
||||
|
||||
apiVersion: v1
|
||||
kind: ResourceQuota
|
||||
metadata:
|
||||
name: resource-quotas
|
||||
namespace: billing-dept-ns
|
||||
spec:
|
||||
hard:
|
||||
persistentvolumeclaims: "1"
|
||||
services.loadbalancers: "2"
|
||||
services.nodeports: "0"
|
||||
|
||||
|
||||
@ -1,134 +0,0 @@
|
||||
|
||||
.. ler1590089128119
|
||||
.. _assign-pod-security-policies:
|
||||
|
||||
============================
|
||||
Assign Pod Security Policies
|
||||
============================
|
||||
|
||||
.. note::
|
||||
|
||||
PodSecurityPolicy (PSP) ONLY applies if running on K8S v1.24 or earlier.
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and removed from K8S v1.25.
|
||||
Instead of using PodSecurityPolicy, you can enforce similar restrictions on Pods using
|
||||
:ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
|
||||
This section describes Pod security policies for **cluster-admin users**,
|
||||
and **non-cluster-admin users**.
|
||||
|
||||
.. contents::
|
||||
:local:
|
||||
:depth: 1
|
||||
|
||||
.. _assign-pod-security-policies-section-xyl-2vp-bmb:
|
||||
|
||||
-------------------
|
||||
cluster-admin users
|
||||
-------------------
|
||||
|
||||
After enabling |PSP| checking, all users with **cluster-admin** roles can
|
||||
directly create pods since they have access to the **privileged** |PSP|. Also,
|
||||
based on the ClusterRoleBindings and RoleBindings automatically added by
|
||||
|prod|, all users with cluster-admin roles can also create privileged
|
||||
Deployment/ReplicaSets/etc. in the kube-system namespace and restricted
|
||||
Deployment/ReplicaSets/etc. in any other namespace.
|
||||
|
||||
|
||||
In order to enable privileged Deployment/ReplicaSets/etc. to be created in
|
||||
another namespace, a role binding of a |PSP| role to
|
||||
**system:serviceaccounts:kube-system** for the target namespace, is required.
|
||||
However, this will enable *ANY* user with access to Deployments/ReplicaSets/etc
|
||||
in this namespace to create privileged Deployments/ReplicaSets. The following
|
||||
example describes the required RoleBinding to allow "creates" of privileged
|
||||
Deployments/ReplicaSets/etc in the 'default' namespace for any user with access
|
||||
to Deployments/ReplicaSets/etc. in the ‘default’ namespace.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
apiVersion: rbac.authorization.k8s.io/v1
|
||||
kind: RoleBinding
|
||||
metadata:
|
||||
name: default-privileged-psp-users
|
||||
namespace: default
|
||||
roleRef:
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
kind: ClusterRole
|
||||
name: privileged-psp-user
|
||||
subjects:
|
||||
- kind: Group
|
||||
name: system:serviceaccounts:kube-system
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
|
||||
|
||||
|
||||
.. _assign-pod-security-policies-section-bm5-vxp-bmb:
|
||||
|
||||
-----------------------
|
||||
non-cluster-admin users
|
||||
-----------------------
|
||||
|
||||
Based on the ClusterRoleBindings and RoleBindings automatically added by
|
||||
|prod|, non-cluster-admin users have at least restricted |PSP| privileges, for
|
||||
both Pods and Deployment/ReplicaSets/etc., for any namespaces they have access
|
||||
to based on other [Cluster]RoleBindings. If a non-cluster-admin user requires
|
||||
privileged capabilities for the namespaces they have access to, they require a
|
||||
new RoleBinding to the **privileged-psp-user** role to create pods directly.
|
||||
For creating privileged pods through deployments/ReplicaSets/etc., the target
|
||||
namespace being used will also require a RoleBinding for the corresponding
|
||||
controller serviceAccounts in kube-system (or generally
|
||||
**system:serviceaccounts:kube-system**).
|
||||
|
||||
.. rubric:: |proc|
|
||||
|
||||
#. Define the required RoleBinding for the user in the target namespace.
|
||||
|
||||
For example, the following RoleBinding assigns the 'privileged' |PSP|
|
||||
role to dave-user in the billing-dept-ns namespace, from the examples
|
||||
in :ref:`Enable Pod Security Policy Checking
|
||||
<enable-pod-security-policy-checking>`.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
apiVersion: rbac.authorization.k8s.io/v1
|
||||
kind: RoleBinding
|
||||
metadata:
|
||||
name: dave-privileged-psp-users
|
||||
namespace: billing-dept-ns
|
||||
subjects:
|
||||
- kind: ServiceAccount
|
||||
name: dave-user
|
||||
namespace: kube-system
|
||||
roleRef:
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
kind: ClusterRole
|
||||
name: privileged-psp-user
|
||||
|
||||
This will enable dave-user to create Pods in billing-dept-ns namespace
|
||||
subject to the privileged |PSP| policy.
|
||||
|
||||
#. Define the required RoleBinding for system:serviceaccounts:kube-system
|
||||
in the target namespace.
|
||||
|
||||
For example, the following RoleBinding assigns the 'privileged' |PSP| to
|
||||
all kube-system ServiceAccounts operating in billing-dept-ns namespace.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
apiVersion: rbac.authorization.k8s.io/v1
|
||||
kind: RoleBinding
|
||||
metadata:
|
||||
name: billing-dept-ns-privileged-psp-users
|
||||
namespace: billing-dept-ns
|
||||
roleRef:
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
kind: ClusterRole
|
||||
name: privileged-psp-user
|
||||
subjects:
|
||||
- kind: Group
|
||||
name: system:serviceaccounts:kube-system
|
||||
apiGroup: rbac.authorization.k8s.io
|
||||
|
||||
This will enable dave-user to create Deployments/ReplicaSets/etc. in
|
||||
billing-dept-ns namespace subject to the privileged |PSP| policy.
|
||||
|
||||
|
||||
@ -1,34 +0,0 @@
|
||||
|
||||
.. ecz1590154334366
|
||||
.. _disable-pod-security-policy-checking:
|
||||
|
||||
====================================
|
||||
Disable Pod Security Policy Checking
|
||||
====================================
|
||||
|
||||
.. note::
|
||||
|
||||
PodSecurityPolicy (PSP) ONLY applies if running on K8S v1.24 or earlier.
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and removed from K8S v1.25.
|
||||
Instead of using PodSecurityPolicy, you can enforce similar restrictions on Pods using
|
||||
:ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
|
||||
You can delete the previously added PodSecurityPolicy service parameter to
|
||||
disable pod security policy checking.
|
||||
|
||||
.. rubric:: |proc|
|
||||
|
||||
#. Remove the kubernetes **kube_apiserver admission_plugins** system
|
||||
parameter to exclude PodSecurityPolicy.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
~(keystone_admin)]$ system service-parameter-delete <uuid>
|
||||
|
||||
#. Apply the Kubernetes system parameters.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
~(keystone_admin)]$ system service-parameter-apply kubernetes
|
||||
|
||||
|
||||
@ -1,39 +0,0 @@
|
||||
|
||||
.. vca1590088383576
|
||||
.. _enable-pod-security-policy-checking:
|
||||
|
||||
===================================
|
||||
Enable Pod Security Policy Checking
|
||||
===================================
|
||||
|
||||
.. note::
|
||||
|
||||
PodSecurityPolicy (PSP) ONLY applies if running on K8S v1.24 or earlier.
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and removed from K8S v1.25.
|
||||
Instead of using PodSecurityPolicy, you can enforce similar restrictions on Pods using
|
||||
:ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
|
||||
.. rubric:: |proc|
|
||||
|
||||
#. Set the kubernetes kube_apiserver admission_plugins system parameter to
|
||||
include PodSecurityPolicy.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
~(keystone_admin)]$ system service-parameter-add kubernetes kube_apiserver admission_plugins=PodSecurityPolicy
|
||||
|
||||
#. Apply the Kubernetes system parameters.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
~(keystone_admin)]$ system service-parameter-apply kubernetes
|
||||
|
||||
#. View the automatically added pod security policies.
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
$ kubectl get psp
|
||||
$ kubectl describe <psp> privileged
|
||||
$ kubectl describe <psp> restricted
|
||||
|
||||
|
||||
@ -44,10 +44,6 @@ Manage Non-Admin Type Users
|
||||
:maxdepth: 1
|
||||
|
||||
private-namespace-and-restricted-rbac
|
||||
pod-security-policies
|
||||
enable-pod-security-policy-checking
|
||||
disable-pod-security-policy-checking
|
||||
assign-pod-security-policies
|
||||
resource-management
|
||||
pod-security-admission-controller-8e9e6994100f
|
||||
|
||||
|
||||
@ -8,7 +8,7 @@ Pod Security Admission (PSA) Controller is the |PSP| replacement, and this
|
||||
document describes the |PSA| functionality, which is 'beta' quality in
|
||||
Kubernetes v1.24 .
|
||||
|
||||
The |PSA| admission controller acts on creation and modification of the pod and
|
||||
The |PSA| controller acts on creation and modification of the pod and
|
||||
determines if it should be admitted based on the requested security context and
|
||||
the policies defined by Pod Security Standards.
|
||||
|
||||
|
||||
@ -1,71 +0,0 @@
|
||||
|
||||
.. pui1590088143541
|
||||
.. _pod-security-policies:
|
||||
|
||||
=====================
|
||||
Pod Security Policies
|
||||
=====================
|
||||
|
||||
.. note::
|
||||
|
||||
PodSecurityPolicy (PSP) ONLY applies if running on K8S v1.24 or earlier.
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and removed from K8S v1.25.
|
||||
Instead of using PodSecurityPolicy, you can enforce similar restrictions on Pods using
|
||||
:ref:`Pod Security Admission Controller <pod-security-admission-controller-8e9e6994100f>`
|
||||
|
||||
|PSPs| enable fine-grained authorization of pod creation and updates.
|
||||
|
||||
|PSPs| control access to security sensitive aspects of Pod specifications
|
||||
such as running of privileged containers, use of host filesystem, running as
|
||||
root, etc. |PSPs| define a set of conditions that a pod must run with, in
|
||||
order to be accepted into the system, as well as defaults for the related
|
||||
fields. |PSPs| are assigned to users through Kubernetes |RBAC| RoleBindings.
|
||||
See `https://kubernetes.io/docs/concepts/policy/pod-security-policy/
|
||||
<https://kubernetes.io/docs/concepts/policy/pod-security-policy/>`__ for
|
||||
details.
|
||||
|
||||
When enabled, Pod security policy checking will authorize all Kubernetes
|
||||
API commands against the |PSPs| which the issuer of the command has access
|
||||
to. If there are no |PSPs| defined in the system or the issuer does not have
|
||||
access to any |PSPs|, the Pod security policy checking will fail to authorize
|
||||
the command.
|
||||
|
||||
|prod-long| provides a system service-parameter to enable Pod security
|
||||
policy checking. Setting this parameter also creates:
|
||||
|
||||
- Two |PSPs| (privileged and restricted) such that users with cluster-admin
|
||||
role (which has access to all resources) has |PSPs| to authorize against.
|
||||
|
||||
- Two corresponding roles for specifying access to these |PSPs|
|
||||
(privileged-psp-user and restricted-psp-user), for binding to other
|
||||
non-admin type subjects.
|
||||
|
||||
- A RoleBinding for the kube-system namespace of the privileged-psp-user Role
|
||||
to serviceAccounts in kubesystem, such that privileged
|
||||
Deployments/ReplicaSets/etc. can be created by any user with access to
|
||||
Deployments/ReplicaSets/etc. in the kube-system namespace (e.g. user with
|
||||
cluster-admin role).
|
||||
|
||||
- A ClusterRoleBinding of the restricted-psp-user Role to any authenticated
|
||||
user, such that at least restricted Pods can be created by any
|
||||
authenticated user in any namespaces that user has access to based on other
|
||||
[Cluster]RoleBindings.
|
||||
|
||||
- A ClusterRoleBinding of the restricted-psp-user Role to serviceAccounts in
|
||||
kube-system, such that at least restricted Deployments/ReplicaSets/etc. can
|
||||
be created by any authenticated user in any namespaces that user has access
|
||||
to based on other [Cluster]RoleBindings.
|
||||
|
||||
PodSecurityPolicy (PSP) is deprecated as of Kubernetes v1.21 and will be
|
||||
removed in v1.25. PSP will continue to be fully functional until being removed
|
||||
in v1.25.
|
||||
|
||||
Since first introduced PSP has shown some serious usability problems.
|
||||
|
||||
The way PSPs are applied to Pods has proven confusing especially when trying to
|
||||
use them. It is easy to accidentally grant broader permissions than intended,
|
||||
and difficult to inspect which PSPs apply in a certain situation.
|
||||
|
||||
As a beta feature, Kubernetes offers a built-in Pod Security Admission (PSA)
|
||||
controller, the successor to PSP. See :ref:`Technology Preview - Pod Security
|
||||
Admission Controller <pod-security-admission-controller-8e9e6994100f>`.
|
||||
@ -44,8 +44,8 @@ Specifically a **LimitRange** policy provides constraints that can:
|
||||
See `https://kubernetes.io/docs/concepts/policy/limit-range/ <https://kubernetes.io/docs/concepts/policy/limit-range/>`__ for more details.
|
||||
|
||||
An example of **LimitRange** policies for the billing-dept-ns namespace of
|
||||
the example in :ref:`Assign Pod Security Policies
|
||||
<assign-pod-security-policies>` is shown below:
|
||||
the example in :ref:`Private Namespace and Restricted RBAC
|
||||
<private-namespace-and-restricted-rbac>` is shown below:
|
||||
|
||||
.. code-block:: none
|
||||
|
||||
@ -107,7 +107,6 @@ the example in :ref:`Assign Pod Security Policies
|
||||
type: Pod
|
||||
|
||||
|
||||
|
||||
.. _resource-management-section-ur2-q5m-tlb:
|
||||
|
||||
-------------
|
||||
@ -127,7 +126,7 @@ See `https://kubernetes.io/docs/concepts/policy/resource-quotas/
|
||||
details.
|
||||
|
||||
An example of **ResourceQuota** policies for the billing-dept-ns namespace
|
||||
of :ref:`Assign Pod Security Policies <assign-pod-security-policies>`
|
||||
of :ref:`Private Namespace and Restricted RBAC <private-namespace-and-restricted-rbac>`
|
||||
is shown below:
|
||||
|
||||
.. code-block:: none
|
||||
@ -142,4 +141,3 @@ is shown below:
|
||||
persistentvolumeclaims: "1"
|
||||
services.loadbalancers: "2"
|
||||
services.nodeports: "0"
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user