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840 B
Markdown
29 lines
No EOL
840 B
Markdown
# Require Read-only root filesystem
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A read-only root file system helps to enforce an immutable infrastructure strategy; the container only needs to write on the mounted volume that persists the state. An immutable root filesystem can also prevent malicious binaries from writing to the host system.
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## Policy YAML
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[require_readonly_rootfilesystem.yaml](best_practices/require_readonly_rootfilesystem.yaml)
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````yaml
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apiVersion: kyverno.io/v1alpha1
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kind: ClusterPolicy
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metadata:
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name: validate-readonly-rootfilesystem
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spec:
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rules:
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- name: validate-readonly-rootfilesystem
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match:
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resources:
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kinds:
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- Pod
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validate:
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message: "Container require read-only rootfilesystem"
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pattern:
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spec:
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containers:
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- securityContext:
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readOnlyRootFilesystem: true
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```` |