$ vim kapacitor/values.yaml
...
## Specify a service type, defaults to NodePort
## ref: http://kubernetes.io/docs/user-guide/services/
##
service:
  type: ClusterIP
  ports:
    - port: 9092
    - targetPort: 9092
  #externalIPs:
...

$ helm upgrade -n helm-test kapacitor-1-1688391149 -f kapacitor_override.yaml ./kapacitor
Release "kapacitor-1-1688391149" has been upgraded. Happy Helming!
NAME: kapacitor-1-1688391149
LAST DEPLOYED: Wed Jul  5 15:03:32 2023
NAMESPACE: helm-test
STATUS: deployed
REVISION: 18
TEST SUITE: None
NOTES:
Kapacitor can be accessed via port 9092 on the following DNS name from within your cluster:

  http://kapacitor-1-1688391149-kapacitor.helm-test:9092

You can connect to the remote instance from a local Kapacitor CLI. Forward the API port to localhost:9092:

  kubectl port-forward --namespace helm-test $(kubectl get pods --namespace helm-test -l app=kapacitor-1-1688391149-kapacitor -o jsonpath='{ .items[0].metadata.name }') 9092:9092

You can also connect to the container running Kapacitor. To open a shell session in the pod, run the following:

  kubectl exec -i -t --namespace helm-test $(kubectl get pods --namespace helm-test -l app=kapacitor-1-1688391149-kapacitor -o jsonpath='{.items[0].metadata.name}') /bin/sh

To view the logs for the Kapacitor pod, run the following:

$ helm search hub etcd
URL                                                     CHART VERSION   APP VERSION     DESCRIPTION
https://artifacthub.io/packages/helm/wenerme/etcd       9.0.4           3.5.9           etcd is a distributed key-value store designed ...
https://artifacthub.io/packages/helm/bitnami/etcd       9.0.4           3.5.9           etcd is a distributed key-value store designed ...
https://artifacthub.io/packages/helm/wener/etcd         9.0.4           3.5.9           etcd is a distributed key-value store designed ...
https://artifacthub.io/packages/helm/bitnami-ak...      8.5.8           3.5.5           etcd is a distributed key-value store designed ...
https://artifacthub.io/packages/helm/riftbit/etcd       6.8.4           3.5.0           etcd is a distributed key value store that prov...
https://artifacthub.io/packages/helm/cloudnativ...      2.2.3           3.3.13          etcd is a distributed key value store that prov...
https://artifacthub.io/packages/helm/gardener-c...      5.3.1           v3.5.2          Helm chart for etcd
https://artifacthub.io/packages/helm/groundhog2...      0.1.5           v3.5.9          A Helm chart for etcd on Kubernetes
https://artifacthub.io/packages/helm/kubesphere...      0.1.3           3.3.12          etcd is a distributed reliable key-value store ...
...

$ helm search repo etcd
NAME            CHART VERSION   APP VERSION     DESCRIPTION
bitnami/etcd    9.0.2           3.5.9           etcd is a distributed key-value store designed ...

$ helm pull bitnami/etcd && tar xzf etcd-9.0.2.tgz

$ etcd_override.yaml
replicaCount: 3
persistence:
  ## @param persistence.enabled If true, use a Persistent Volume Claim. If false, use emptyDir.
  ##
  enabled: false
tolerations:
  - operator: Exists
disasterRecovery:
  cronjob:
    tolerations:
      - operator: Exists

# helm install -n helm-test -g -f etcd_override.yaml ./etcd
NAME: etcd-1688819715
LAST DEPLOYED: Sat Jul  8 21:35:15 2023
NAMESPACE: helm-test
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: etcd
CHART VERSION: 9.0.2
APP VERSION: 3.5.9

** Please be patient while the chart is being deployed **

etcd can be accessed via port 2379 on the following DNS name from within your cluster:

    etcd-1688819715.helm-test.svc.cluster.local

To create a pod that you can use as a etcd client run the following command:

    kubectl run etcd-1688819715-client --restart='Never' --image docker.io/bitnami/etcd:3.5.9-debian-11-r18 --env ROOT_PASSWORD=$(kubectl get secret --namespace helm-test etcd-1688819715 -o jsonpath="{.data.etcd-root-password}" | base64 -d) --env ETCDCTL_ENDPOINTS="etcd-1688819715.helm-test.svc.cluster.local:2379" --namespace helm-test --command -- sleep infinity

Then, you can set/get a key using the commands below:

    kubectl exec --namespace helm-test -it etcd-1688819715-client -- bash
    etcdctl --user root:$ROOT_PASSWORD put /message Hello
    etcdctl --user root:$ROOT_PASSWORD get /message

To connect to your etcd server from outside the cluster execute the following commands:

    kubectl port-forward --namespace helm-test $(kubectl get pods --namespace helm-test -l app=kapacitor-1-1688391149-kapacitor -o jsonpath='{ .items[0].metadata.name }') 9092:9092

You can also connect to the container running Kapacitor. To open a shell session in the pod, run the following:

  kubectl exec -i -t --namespace helm-test svc/etcd-1688819715 2379:2379 &
    echo "etcd URL: http://127.0.0.1:2379"

 * As rbac is enabled you should add the flag `--user root:$ETCD_ROOT_PASSWORD` to the etcdctl commands. Use the command below to export the password:

    export ETCD_ROOT_PASSWORD=$(kubectl get podssecret --namespace helm-test -l app=kapacitor-1-1688391149-kapacitoretcd-1688819715 -o jsonpath='"{.items[0].metadata.name}') /bin/sh

To view the logs for the Kapacitor pod, run the following: