Upgrade

If you installed with a values file, you can upgrade with one command. If you used --set flags, first create a values file with the same settings. Helm renders every resource again during an upgrade, and omitted settings revert to their defaults.

Upgrade the chart

Code
printf '%s' "$ZUPLO_REGISTRY_KEY" |
  helm registry login us-docker.pkg.dev -u _json_key_base64 --password-stdin

helm upgrade zuplo \
  oci://us-docker.pkg.dev/zuplo-customers/self-hosted/helm-charts/zuplo \
  --version "$NEW_CHART_VERSION" \
  --namespace zuplo \
  -f zuplo-values.yaml \
  -f zuplo-secrets.yaml

Pass both files, unchanged, with every upgrade. The chart creates its Kubernetes Secrets from values, so omitting the credentials file on an upgrade empties the registry Secrets and every subsequent image pull fails.

Check what changed before applying it:

Code
helm diff upgrade zuplo \
  oci://us-docker.pkg.dev/zuplo-customers/self-hosted/helm-charts/zuplo \
  --version "$NEW_CHART_VERSION" \
  --namespace zuplo \
  -f zuplo-values.yaml -f zuplo-secrets.yaml

helm diff is the helm-diff plugin, installed with helm plugin install https://github.com/databus23/helm-diff.

Verify the upgrade

Work through Verify your install again. The gateway deployments already in the cluster keep serving through the upgrade; they are rebuilt only when you deploy them.

Code
kubectl wait --for=condition=Available deployment --all \
  -n zuplo-system --timeout=5m
helm history zuplo -n zuplo

Roll back an upgrade

Code
helm rollback zuplo <revision> -n zuplo

Rollback restores the workloads and configuration from the selected revision.