FluxCD Image Automation Error Troubleshooting
Problem Running: flux reconcile image update flux-system Result: failed to update source: failed to push to remote ERROR: The key you are authenticating with has been marked as read only And: flux ...

Source: DEV Community
Problem Running: flux reconcile image update flux-system Result: failed to update source: failed to push to remote ERROR: The key you are authenticating with has been marked as read only And: flux get image update shows: READY: False MESSAGE: failed to push to remote Root Cause FluxCD ImageUpdateAutomation needs to commit and push updates to the Git repository when it updates container image tags. Pipeline: Container Registry ↓ ImageRepository ↓ ImagePolicy ↓ ImageUpdateAutomation ↓ Git Commit + Push ↓ Flux Kustomization deploys update If the Git credential is read-only, the push fails. Diagnosis Steps 1. Check Image Automation Status flux get image update Look for: READY: False failed to push to remote 2. Inspect the Automation Object kubectl get imageupdateautomation -A Example: STATUS: failed to update source 3. Check the Git Source flux get sources git This confirms Flux can read the repo. But pushing still fails if the key is read-only. 4. Confirm Git Authentication Check the Git