使用腳本在Linux服務器上自動安裝Kubernetes的包管理器Helm

Helm之于Kubernetes好比yum之于Red Hat Enterprise Linux，或者apt-get之于Ubuntu。

Helm是由helm CLI和Tiller組成，是典型的Client/Server應用。helm運行于客戶端，提供命令行界面；Tiller應用運行于Kubernetes內部。

在Jerry之前的文章 里曾經介紹過手動下載Helm安裝包，解壓后把執行文件拷貝到環境變量的做法。

其實還有另外一種全自動的做法，使用安裝腳本自動安裝。

1. 自動下載安裝腳本

curl  https://raw.githubusercontent.com/helm/helm/master/scripts/get  > get_ helm.sh

打開腳本，可以看到helm安裝的環境變量HELM_INSTALL_DIR為/usr/local/bin:

2. chmod 700 get_helm.sh

./get_helm.sh:

3. 執行helm init, 看到Happy Helming消息，說明安裝成功。

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!

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