Helm管理工具怎么用
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一 Helm 简介
Helm:
chart: 一个helm程序包
Repository: Charts仓库,https/http服务器
Release:特定的chart部署于目标集群上的一个实例
Chart -> Config -> Release
helm:客户端。管理本地Chart仓库,管理Chart,与Tiller服务器交互,发送Chart,实例安装,查询,卸载等操作
Tiller: 服务端,接收helm发来的Chart与Config,合并生成Release
二 部署Helm
1 下载helm
wget https://storage.googleapis.com/kubernetes-helm/helm-v2.13.1-linux-amd64.tar.gz
2 解压
tar xf helm-v2.13.1-linux-amd64.tar.gz
3 安装helm
cd linux-amd64/ mv helm /usr/bin/ # helm version Client: &version.Version{SemVer:"v2.13.1", GitCommit:"618447cbf203d147601b4b9bd7f8c37a5d39fbb4", GitTreeState:"clean"} Error: could not find tiller
4 安装 tiller
部署tiller对于开启rbac认真的集群需要进行rbac授权并且绑定在集群级别的clusterrolebinding
# cat tiller-rbac.yaml apiVersion: v1 kind: ServiceAccount metadata: name: tiller namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: tiller roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: tiller namespace: kube-system kubectl apply -f tiller-rbac.yaml 如果想要部署在特定的名称该空间使用请参考官网 https://github.com/helm/helm/blob/master/docs/rbac.md 查看tiller # kubectl get serviceaccount -n kube-system | grep tiller tiller 1 4m25s
5 初始化tiller
helm init --service-account tiller --history-max 200 Creating /root/.helm Creating /root/.helm/repository Creating /root/.helm/repository/cache Creating /root/.helm/repository/local Creating /root/.helm/plugins Creating /root/.helm/starters Creating /root/.helm/cache/archive Creating /root/.helm/repository/repositories.yaml Adding stable repo with URL: https://kubernetes-charts.storage.googleapis.com Adding local repo with URL: http://127.0.0.1:8879/charts $HELM_HOME has been configured at /root/.helm. Tiller (the Helm server-side component) has been installed into your Kubernetes Cluster. Please note: by default, Tiller is deployed with an insecure 'allow unauthenticated users' policy. To prevent this, run `helm init` with the --tiller-tls-verify flag. For more information on securing your installation see: https://docs.helm.sh/using_helm/#securing-your-helm-installation Happy Helming! 可以预先设置下载proxy export HTTPS_PROXY='http://www.ik8s.io:10080' 如果提示失败并且是连接https://ip:6443超时可以通过设置环境变量 export NO_PROXY='节点ip/16,回环地址/16' 再次安装
6 查看tiller
# kubectl get pod -n kube-system | grep tiller tiller-deploy-876ff889-jjfn9 1/1 Running 0 4m29s # helm version Client: &version.Version{SemVer:"v2.13.1", GitCommit:"618447cbf203d147601b4b9bd7f8c37a5d39fbb4", GitTreeState:"clean"} Server: &version.Version{SemVer:"v2.13.1", GitCommit:"618447cbf203d147601b4b9bd7f8c37a5d39fbb4", GitTreeState:"clean"}
7 helm chart 官方可用仓库
1) helm.sh 2) hub.kubeapps.com
8 升级仓库
helm repo update
9 helm基本使用
1) 查看 某chart # helm search jenkins NAME CHART VERSION APP VERSION DESCRIPTION stable/jenkins 1.1.16 lts Open source continuous integration server. It supports mu... 2) 查看chart的详细信息 helm inspect stable/jenkins 3) 安装某应用 helm install --name memcached stable/memcached 4) 卸载某个应用 helm delete memcached 5) 查看应用列表 helm list 6) 获取chart helm get/fatch stable/jenkins 7) 历史管理 helm history memcached 8)创建chart helm create .. 9) 打包 helm package .. 10) 回滚 helm rollback ... 11) 查看helm版本 helm version 12) 查看状态 helm status ......通过helm --help 获取
10 helm家目录
家目录主要查看我们使用过的chart
/root/.helm/
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