Files
opendesk/.kyverno/policies/require-imagepullpolicy.yaml
2024-02-21 12:04:33 +00:00

52 lines
2.0 KiB
YAML

# SPDX-FileCopyrightText: 2024 Bundesministerium des Innern und für Heimat, PG ZenDiS "Projektgruppe für Aufbau ZenDiS"
# SPDX-License-Identifier: Apache-2.0
---
apiVersion: "kyverno.io/v1"
kind: "ClusterPolicy"
metadata:
name: "require-imagepullpolicy"
annotations:
policies.kyverno.io/title: "Disallow usage of latest tag"
policies.kyverno.io/subject: "Pod"
policies.kyverno.io/description: >-
If the `latest` tag is allowed for images, it is a good idea to have the imagePullPolicy field set to `Always` to
ensure later pulls get an updated image in case the latest tag gets updated.
This policy validates the imagePullPolicy is set to `Always` when the `latest` tag is specified explicitly or
where a tag is not defined at all.
Additionally this policy checks if the variable `.Values.global.imagePullPolicy` is used in templates.
spec:
background: true
rules:
- match:
resources:
kinds:
- "Pod"
name: "require-imagePullPolicy"
validate:
message: >-
The imagePullPolicy must be set to `Always` when the `latest` tag is used, otherwise the value from
`.Values.global.imagePullPolicy` has to be used.
anyPattern:
- spec:
=(ephemeralContainers):
- (image): "*:latest | !*:*"
imagePullPolicy: "Always"
=(initContainers):
- (image): "*:latest | !*:*"
imagePullPolicy: "Always"
containers:
- (image): "*:latest | !*:*"
imagePullPolicy: "Always"
- spec:
=(ephemeralContainers):
- (image): "!*:latest"
imagePullPolicy: "kyverno"
=(initContainers):
- (image): "!*:latest"
imagePullPolicy: "kyverno"
containers:
- (image): "!*:latest"
imagePullPolicy: "kyverno"
validationFailureAction: "audit"
...