fscottmiller / jenkins Goto Github PK

test

Use your favorite cloud provider!

https://kubernetes.io/docs/tasks/tools/install-kubectl/

https://helm.sh/docs/intro/install/

helm init

kubectl create ns jenkins

kubectl create configmap casc -n jenkins --from-file casc

kubectl create secret generic <secretName> --from-file=<secretFile> -n jenkins

helm install jenkins        \       
    stable/jenkins          \
    -n jenkins              \
    -f jenkins.yaml         \
    --set master.adminUser=<admin username>,master.adminPassword=<admin password>

0. Update the configuration files in casc
1. Update the ConfigMap kubectl create configmap casc -n jenkins --from-file casc -o yaml --dry-run | kubectl replace -f -
2. Apply the upgrade

helm upgrade jenkins        \
    stable/jenkins          \
    -n jenkins              \
    -f jenkins.yaml

3. Reload the configuration Manage Jenkins > Configuration as Code > Reload Existing Configuration

Things to think about:

• using the --atomic or --cleanup-on-fail flags during helm deployments
• configmap only takes the root level directory - no subdirectories
• we need to consider how to clean up after merges
  • delete namespace (includes service account and app), as well as cluster role binding for the service account
  • need to implement cleanup for backup data
• blue green deployment? need to think it through
• known error: helm marks deployment as successfull before waiting for pods to be ready
  • if CasC fails, Jenkins will stop (failed deploy) but Helm shows success
• check for apply configmap