使用腳本在Linux伺服器上自動安裝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。

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Helm是由helm CLI和Tiller組成，是典型的Client/Server應用。helm運作于用戶端，提供指令行界面；Tiller應用運作于Kubernetes内部。

在Jerry之前的文章裡曾經介紹過手動下載下傳Helm安裝包，解壓後把執行檔案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. 自動下載下傳安裝腳本

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!