stack.basicstack.de/apps/argocd
CTO Agent 08292bd449 Fix Argo CD sealed secrets namespace mismatch
Re-sealed the three Argo CD secrets with namespace: argocd instead of
namespace: paperclip to match the kustomization.yaml deployment target.

The sealed-secrets controller was failing to unseal these because they
were encrypted for the 'paperclip' namespace but Kustomize was deploying
them to the 'argocd' namespace. Sealed secrets use strict scope by
default, so namespace/name must match exactly.

Fixed files:
- apps/argocd/argocd-oidc-secret-sealed.yaml
- apps/argocd/repo-basicstack-org-secret-sealed.yaml
- apps/argocd/repo-stack-basicstack-de-secret-sealed.yaml

Root cause: DEV-284 investigation revealed controller error logs showing
"no key could decrypt secret" for all three Argo CD sealed secrets.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
2026-07-12 10:11:39 +00:00
..
argocd-ingress.yaml Add Argo CD installation manifests with Pocket ID SSO 2026-07-12 09:19:28 +00:00
argocd-install.yaml fix(argocd): add Forgejo SSH host key to argocd-ssh-known-hosts-cm 2026-07-12 09:50:34 +00:00
argocd-oidc-secret-sealed.yaml Fix Argo CD sealed secrets namespace mismatch 2026-07-12 10:11:39 +00:00
kustomization.yaml Add memory limits to Argo CD components to prevent OOM incidents 2026-07-12 09:19:28 +00:00
README.md Add memory limits to Argo CD components to prevent OOM incidents 2026-07-12 09:19:28 +00:00
repo-basicstack-org-secret-sealed.yaml Fix Argo CD sealed secrets namespace mismatch 2026-07-12 10:11:39 +00:00
repo-stack-basicstack-de-secret-sealed.yaml Fix Argo CD sealed secrets namespace mismatch 2026-07-12 10:11:39 +00:00

Argo CD Deployment

This directory contains the Argo CD deployment configuration for the basicstack.de k3s cluster.

Files

  • argocd-install.yaml - Auto-generated Argo CD installation manifest (DO NOT EDIT DIRECTLY)
  • kustomization.yaml - Kustomize overlay that adds resource limits and other customizations
  • argocd-ingress.yaml - Ingress configuration for Argo CD UI
  • argocd-oidc-secret-sealed.yaml - Sealed secret for OIDC integration
  • repo-*.yaml - Sealed secrets for Git repository access

Resource Limits

IMPORTANT: Resource limits were added after DEV-281 (resource exhaustion incident on 2026-07-12).

All Argo CD components now have memory limits to prevent OOM incidents:

Component Memory Limit Memory Request
application-controller 512Mi 256Mi
repo-server 512Mi 256Mi
redis 256Mi 128Mi
server 256Mi 128Mi
notifications-controller 128Mi 64Mi
applicationset-controller 256Mi 128Mi

These limits are based on observed usage patterns and provide headroom while preventing unlimited memory consumption.

Deployment

kubectl apply -k apps/argocd/

This will apply the base manifests plus all patches defined in kustomization.yaml.

kubectl apply -f apps/argocd/argocd-install.yaml
kubectl apply -f apps/argocd/argocd-ingress.yaml
# etc.

Note: This skips the resource limit patches and is NOT recommended.

Updating Argo CD

When updating to a new Argo CD version:

  1. Download the new install manifest:

    curl -sSL https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml > argocd-install.yaml
    
  2. Apply with kustomize (resource limits will be automatically applied):

    kubectl apply -k apps/argocd/
    
  3. Verify resource limits are in place:

    kubectl get statefulset,deployment -n argocd -o custom-columns='NAME:.metadata.name,MEMORY_LIMIT:.spec.template.spec.containers[0].resources.limits.memory'
    

Troubleshooting

Check resource usage

kubectl top pods -n argocd

Check if resource limits are applied

kubectl get deployment,statefulset -n argocd -o json | jq '.items[] | {name: .metadata.name, limits: .spec.template.spec.containers[0].resources.limits}'

Rollback if needed

If there are issues after applying resource limits:

# Remove limits from a specific component
kubectl patch deployment -n argocd argocd-server --type='json' -p='[{"op": "remove", "path": "/spec/template/spec/containers/0/resources"}]'

History

  • 2026-07-12: Added resource limits via kustomization to prevent OOM incidents (DEV-281)
  • 2026-07-11: Initial deployment