Drop capabilities, enable seccomp and enforce runAsNonRoot #295
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Further restricts the SecurityContext that the controller runs under, by enabling the default seccomp profile and dropping all linux capabilities. This was set at container-level to ensure backwards compatibility with use cases in which sidecars are injected into the source-controller pod without setting less restrictive settings. Add a uid and gid for the container to enforce runAsNonRoot and ensure the use of non root users. BREAKING CHANGES: 1) The use of new seccomp API requires Kubernetes 1.19. 2) the controller container is now executed under 65534:65534 (userid:groupid). This change may break deployments that hard-coded the user name 'controller' in their PodSecurityPolicy. Signed-off-by: Sanskar Jaiswal <[email protected]> Co-authored-by: Paulo Gomes <[email protected]>
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This was tested on Kubernetes 1.23.1 with restrict "pod security" (below) and it worked as expected. |
stefanprodan
approved these changes
Jan 20, 2022
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Further restricts the SecurityContext that the controller runs under, by enabling the default seccomp profile and dropping all linux capabilities.
This was set at container-level to ensure backwards compatibility with use cases in which sidecars are injected into the source-controller pod
without setting less restrictive settings.
Add a uid and gid for the container to enforce runAsNonRoot and ensure
the use of non root users.
Ref: fluxcd/flux2#2014
BREAKING CHANGES:
This change may break deployments that hard-coded the user name 'controller' in their PodSecurityPolicy.
Signed-off-by: Sanskar Jaiswal [email protected]
Co-authored-by: Paulo Gomes [email protected]