1. chart和镜像准备
1.1 官方下载chart
1.2 下载
找一台可以上公网的服务器,参照官方文下载chart包
| # helm repo add bitnami-aks https://marketplace.azurecr.io/helm/v1/repo |
| # helm pull bitnami-aks/etcd --version 6.2.9 |
可见chart包已经下载到当前目录
| # ll |
| -rw-r--r-- 1 root root 34334 7月 19 14:34 etcd-6.2.10.tgzgz |
将chart拷贝到要目标服务器上即可。
1.3 下载镜像
1.3.1 下载镜像
离线安装需要提前准备如下镜像:
- etcd镜像(必要)
docker.io/bitnami/etcd:3.4.15-debian-10-r33
- 许可证相关(非必要)
下边这个镜像是写许可证用的,如果没有启用许可证可以不下载
docker.io/bitnami/bitnami-shell:10-debian-10-r134
1.3.2 上传私有镜像仓库
私有镜像镜像名如下:
harbocto.xxx.com.cn/bitnami/etcd:3.4.15-debian-10-r33
harbocto.xxx.com.cn/bitnami/bitnami-shell:10-debian-10-r134
2. 修改配置文件
进入解压缩后生成的etcd目录
| image: |
| registry: harbocto.xxx.com.cn |
| repository: bitnami/etcd |
| tag: 3.5.0-debian-10-r24 |
下边许可证没有启用,所以其实不修改也可以
| volumePermissions: |
| enabled: false |
| image: |
| registry: harbocto.xxx.com.cn |
| repository: bitnami/bitnami-shell |
| tag: 10-debian-10-r134 |
| pullPolicy: Always |
| auth: |
| rbac: |
| …… |
| rootPassword: "Boe888888" |
默认开启了持久化存储:persistence.enabled=true
所以我们只需要改pvc的大小即可
| persistence: |
| ...... |
| size: 50Gi |
我实际并没有打开,所以后边的service可以看到我依然使用的ClusterIP
注释ClusterIP
后添加如下内容:
| service: |
| type: NodePort |
| |
| ...... |
| nodePorts: |
| clientPort: "31015" |
| peerPort: "31016" |
3 启动服务
- 创建namespace,进入chart的etcd目录启动服务
| [root@IoT-M01 etcd]# kubectl create namespace etcd |
| [root@IoT-M01 etcd]# helm install etcd -n etcd ./ |
| [root@IoT-M01 etcd]# kubectl get pod -n etcd |
| NAME READY STATUS RESTARTS AGE |
| etcd-0 1/1 Running 0 25m |
| etcd-1 1/1 Running 0 25m |
| etcd-2 1/1 Running 0 25m |
| [root@IoT-M01 etcd]# kubectl get service -n etcd |
| NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE |
| etcd ClusterIP 10.1.231.186 <none> 2379/TCP,2380/TCP 25m |
| etcd-headless ClusterIP None <none> 2379/TCP,2380/TCP 25m |
4. 测试
| [root@IoT-M01 etcd]# helm install etcd -n etcd ./ |
| NAME: etcd |
| LAST DEPLOYED: Mon Jul 19 15:56:47 2021 |
| NAMESPACE: etcd |
| STATUS: deployed |
| REVISION: 1 |
| TEST SUITE: None |
| NOTES: |
| ** 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.etcd.svc.cluster.local |
| |
| To create a pod that you can use as a etcd client run the following command: |
| |
| kubectl run etcd-client --restart='Never' --image harbocto.boe.com.cn/bitnami/etcd:3.5.0-debian-10-r24 --env ROOT_PASSWORD=$(kubectl get secret --namespace etcd etcd -o jsonpath="{.data.etcd-root-password}" | base64 --decode) --env ETCDCTL_ENDPOINTS="etcd.etcd.svc.cluster.local:2379" --namespace etcd --command -- sleep infinity |
| |
| Then, you can set/get a key using the commands below: |
| |
| kubectl exec -it etcd-client -- bash |
| etcdctl --user root:$ROOT_PASSWORD put /message Hello |
| etcdctl --user root:$ROOT_PASSWORD get /message |
| |
| To connect to your etcd server from outside the cluster execute the following commands: |
| |
| kubectl port-forward --namespace etcd svc/etcd 2379:2379 & |
| echo "etcd URL: http://127.0.0.1:2379" |
| |
| * As rbac is enabled you should add the flag `--user root:$ETCD_ROOT_PASSWORD` to the etcdctl commands. Use the command below to export the password: |
| |
| export ETCD_ROOT_PASSWORD=$(kubectl get secret --namespace etcd etcd -o jsonpath="{.data.etcd-root-password}" | base64 --decode) |
| [root@IoT-M01 etcd]# kubectl exec -it -n etcd etcd-0 bash |
| I have no name!@etcd-0:/opt/bitnami/etcd$ etcdctl --user root:Bxx888888 put /message Hello |
| OK |
| I have no name!@etcd-0:/opt/bitnami/etcd$ etcdctl --user root:Bxx888888 get /message |
| /message |
| Hello |
FAQ
1)helm3.0.3报错
helm 3.0.3 报错如下:
| [root@master-01 etcd]# helm version |
| version.BuildInfo{Version:"v3.0.3", GitCommit:"ac925eb7279f4a6955df663a0128044a8a6b7593", GitTreeState:"clean", GoVersion:"go1.13.6"} |
| [root@master-01 etcd]# helm install etcd -n etcd-ha ./ |
| Error: parse error at (etcd/charts/common/templates/_secrets.tpl:84): function "lookup" not defined |
【解决】
我是直接升级到3.5.4 解决了

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