Summary
Quite suddenly, last week (after months without any failure), our ArgoCD deployment in our AKS cluster broke.
Specifically: all ArgoCD applications got into the "Unknown" state, unable to compute any diffs against the cluster (error messages below).
We haven't seen this issue before.
The cluster is seemingly healthy: usual kubectl commands (get, describe, apply, etc) run from our deploy server still work fine. Ditto for helm.
Usual remedies did not work:
- refresh the root app
- hard refresh the root app
- restart the argocd deployments (server, repo server, cache)
- re-install argocd from scratch
Information
- ArgoCD version: v2.14.4+3d901f2
- Kubernetes cluster version: 1.30 (AKS)
Error messages
Failed to load live state: failed to get cluster info for "https://kubernetes.default.svc": error synchronizing cache state : failed to load open api schema while syncing cluster cache: error getting openapi resources: the server is currently unable to handle the request
error synchronizing cache state : failed to load open api schema while syncing cluster cache: error getting openapi resources: the server is currently unable to handle the request
Related tickets
Question
Any ideas on how to debug / troubleshoot this issue?
