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replace docker run for running etcdctl command with just etcdctl #39149

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merged 6 commits into from
Feb 8, 2023
Merged

replace docker run for running etcdctl command with just etcdctl #39149

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889f536
replace docker run for running etcdctl command with just etcdctl
reetasingh Jan 29, 2023
bd4c8b7
Merge branch 'main' into reetas_etcd
reetasingh Jan 29, 2023
488e172
add space
reetasingh Jan 29, 2023
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Merge branch 'reetas_etcd' of github.com:reetasingh/website into reet…
reetasingh Jan 29, 2023
14f017d
add note for etcdctl
reetasingh Jan 31, 2023
c8243c8
remove note on etcd tag
reetasingh Feb 1, 2023
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32 changes: 17 additions & 15 deletions ...n/docs/setup/production-environment/tools/kubeadm/setup-ha-etcd-with-kubeadm.md
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Expand Up @@ -273,22 +273,24 @@ on Kubernetes dual-stack support see [Dual-stack support with kubeadm](/docs/set

1. Optional: Check the cluster health.

```sh
docker run --rm -it \
--net host \
-v /etc/kubernetes:/etc/kubernetes registry.k8s.io/etcd:${ETCD_TAG} etcdctl \
--cert /etc/kubernetes/pki/etcd/peer.crt \
--key /etc/kubernetes/pki/etcd/peer.key \
--cacert /etc/kubernetes/pki/etcd/ca.crt \
--endpoints https://${HOST0}:2379 endpoint health --cluster
...
https://[HOST0 IP]:2379 is healthy: successfully committed proposal: took = 16.283339ms
https://[HOST1 IP]:2379 is healthy: successfully committed proposal: took = 19.44402ms
https://[HOST2 IP]:2379 is healthy: successfully committed proposal: took = 35.926451ms
```
If `etcdctl` isn't available, you can run this tool inside a container image.
You would do that directly with your container runtime using a tool such as
`crictl run` and not through Kubernetes

```sh
ETCDCTL_API=3 etcdctl \
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--cert /etc/kubernetes/pki/etcd/peer.crt \
--key /etc/kubernetes/pki/etcd/peer.key \
--cacert /etc/kubernetes/pki/etcd/ca.crt \
--endpoints https://${HOST0}:2379 endpoint health
...
https://[HOST0 IP]:2379 is healthy: successfully committed proposal: took = 16.283339ms
https://[HOST1 IP]:2379 is healthy: successfully committed proposal: took = 19.44402ms
https://[HOST2 IP]:2379 is healthy: successfully committed proposal: took = 35.926451ms
```

- Set `${HOST0}`to the IP address of the host you are testing.

- Set `${ETCD_TAG}` to the version tag of your etcd image. For example `3.4.3-0`. To see the etcd image and tag that kubeadm uses execute `kubeadm config images list --kubernetes-version ${K8S_VERSION}`, where `${K8S_VERSION}` is for example `v1.17.0`.
- Set `${HOST0}`to the IP address of the host you are testing.

## {{% heading "whatsnext" %}}

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