$brew install kubernetes-helm
$helm version
- It shows both client and server version
- The server is called tiller
$gcloud container clusters get-credentials <cluster_name> --zone <zone> --project <project_name>
$kubectl config get-contexts
$kubectl cluster-info
$helm init
- installs tiller on kube-system namespace in the current cluster context
$kubectl get pods --all-namespaces - You can see tiller pod in the list
- Step 1 - Create ServiceAccount
tillerinkube-systemnamespace
apiVersion: v1
kind: ServiceAccount
metadata:
name: tiller
namespace: kube-system
- Step 2 - Create ClusterRoleBinding tiller
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: tiller
subjects:
- kind: ServiceAccount
name: tiller
namespace: kube-system
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
- Step 3 - Run both files
$kubectl apply -f ./helpers/helm-*.yaml
$helm create <app-name>
e.g. helm create helm-demo
$helm lint
$helm install --name myapp helm-demo
$kubectl get svc,po,deployments
curl http://$(kubectl get svc/helm-demo-service -n pirates -o jsonpath='{.status.loadBalancer.ingress[0].ip}'):9090/demo-service/v1.0/names
$helm upgrade myapp helm-demo
$helm list
- It shows the total number of revisions
$helm history <release_name>
e.g. $helm history myapp
Then run,
$helm rollback <release_name> <release_version>
e.g. $helm rollback myapp 1
$ helm ls
$ helm delete helm-demo
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