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43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# Run as non-root user
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By default, all processes in a container run as the root user (uid 0). To prevent potential compromise of container hosts, specify a non-root and least privileged user ID when building the container image and require that application containers run as non root users i.e. set `runAsNonRoot` to `true`.
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## Additional Information
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* [Pod Security Context](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/)
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## Policy YAML
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[disallow_root_user.yaml](best_practices/disallow_root_user.yaml)
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````yaml
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: disallow-root-user
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spec:
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validationFailureAction: audit
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rules:
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- name: validate-runAsNonRoot
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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: "Running as root user is not allowed. Set runAsNonRoot to true"
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anyPattern:
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- spec:
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securityContext:
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runAsNonRoot: true
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- spec:
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securityContext:
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runAsUser: ">0"
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- spec:
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containers:
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- securityContext:
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runAsNonRoot: true
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- spec:
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containers:
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- securityContext:
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runAsUser: ">0"
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````
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