Disable caching of secrets and configmaps #989
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souleb
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You can re-enable caching by starting the controller with the argument '--feature-gates=CacheSecretsAndConfigMaps=true' Signed-off-by: Mac Chaffee <[email protected]>
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This was referenced Apr 24, 2023
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For background, see fluxcd/helm-controller#512 and fluxcd/helm-controller#513
This PR adds a new opt-in feature gate (CacheSecrets) which causes the default source controller to stop caching secrets. Users can set that feature gate to "true" to go back to the old behavior of caching secrets.
The source controller fetches secrets to perform authenticated git clones, but the controller-runtime client greedily fetches all secrets in the cluster to cache them (LIST and WATCH operations instead of GET operations). Since it's common to have very large secrets for helm charts, this behavior can use up a lot of RAM.
I'm also interested in this feature so that users can run source-controller without giving it cluster-wide access to secrets which can be quite a dangerous permission.