Upgrading prometheus-community/kube-prometheus-stack

Upgrading kube-prometheus-stack.md

Upgrading prometheus-community/kube-prometheus-stack

This guide outlines the steps to upgrade the Prometheus stack in a Kubernetes cluster.

Prerequisites

• Helm 3 installed
• kubectl configured to your cluster
• Proper permissions to modify resources in the monitoring namespace

Steps

1. Update Helm repositories:

   helm repo update

2. Upgrade the Prometheus stack:

   helm upgrade relesease-name prometheus-community/kube-prometheus-stack \
     --install \
     -f "packages/relesease-name/values-dev.yaml" \
     --namespace monitoring \
     --create-namespace

   Note: Replace relesease-name with your release name and adjust the values file path as needed.

3. Scale down Grafana deployment to release the PVC:

   kubectl scale deployment relesease-name-grafana -n monitoring --replicas=0

4. Scale up Grafana deployment:

   kubectl scale deployment relesease-name-grafana -n monitoring --replicas=1

5. Verify the upgrade:

   kubectl get pods -n monitoring

Troubleshooting

If you encounter a "Multi-Attach error for Volume" after scaling up Grafana, repeat steps 3 and 4.

Notes

• Ensure you have a backup of your Prometheus and Grafana data before upgrading.
• Review the changelog of the kube-prometheus-stack for any breaking changes before upgrading.
• Adjust resource requests and limits in your values file if needed after the upgrade.