1. Prerequisites​

1. Ensure the following tools are installed:

   • Helm 3.x
   • kubectl
   • Git (optional)

2. Verify current deployment information:

   helm list -n <your-namespace>
   # If the old chart package is missing, export values.yaml with:
   helm get values hertzbeat -n <your-namespace> > hertzbeat-1.6.1-values.yaml
   

3. Data Backup:

For custom monitoring templates:

• Backup /opt/hertzbeat/define from the running pod:

  kubectl cp hertzbeat/hertzbeat-978477f84-fr894:/opt/hertzbeat/define ./define
  

For external databases (MySQL/PostgreSQL):

• Use mysqldump/pg_dump or copy PVC directories:

  kubectl get pvc -n hertzbeat
  

2. Upgrade Steps​

1. Pull the latest Chart​

helm repo update
helm pull hertzbeat/hertzbeat --version 1.7.0 --untar
cd hertzbeat

Or clone from GitHub:

git clone https://github.com/hertzbeat/helm-charts.git
cd helm-charts/charts/hertzbeat

2. Update values.yaml​

Compare and merge configurations:

diff -u ../hertzbeat-1.6.1-values.yaml values.yaml
# Use vimdiff to compare and merge changes

Key configurations to check:

• image.tag
• resources
• persistence
• service.type
• Ingress settings
• External database configurations

3. Dry-run Upgrade​

helm upgrade hertzbeat . -n <your-namespace> \
  --values values.yaml \
  --dry-run \
  --debug

4. Execute Upgrade​

helm upgrade hertzbeat . -n <your-namespace> \
  --values values.yaml \
  --atomic \          # Auto-rollback on failure
  --timeout 10m       # Set timeout

5. Verify Upgrade​

helm status hertzbeat -n <your-namespace>
kubectl get pods -n <your-namespace> -l app.kubernetes.io/instance=hertzbeat
kubectl logs -n <your-namespace> -l app.kubernetes.io/instance=hertzbeat --tail=100