在 kubernetes pod 中执行多个命令(或从 shell 脚本) [英] Executing multiple commands( or from a shell script) in a kubernetes pod

问题描述

我正在编写一个 shell 脚本，它需要登录到 pod 并在 kubernetes pod 中执行一系列命令.

I'm writing a shell script which needs to login into the pod and execute a series of commands in a kubernetes pod.

下面是我的sample_script.sh:

Below is my sample_script.sh:

kubectl exec octavia-api-worker-pod-test -c octavia-api bash
unset http_proxy https_proxy
mv /usr/local/etc/octavia/octavia.conf /usr/local/etc/octavia/octavia.conf-orig
/usr/local/bin/octavia-db-manage --config-file /usr/local/etc/octavia/octavia.conf upgrade head

运行这个脚本后，我没有得到任何输出.任何帮助将不胜感激

After running this script, I'm not getting any output. Any help will be greatly appreciated

推荐答案

您是否将所有这些命令作为单行命令运行?首先，这些命令之间没有 ; 或 && .因此，如果您将其作为多行脚本粘贴到您的终端中，它很可能会在本地执行.

Are you running all these commands as a single line command? First of all, there's no ; or && between those commands. So if you paste it as a multi-line script to your terminal, likely it will get executed locally.

其次，要告诉 bash 执行某事，您需要:bash -c "command".

Second, to tell bash to execute something, you need: bash -c "command".

试试运行这个:

$ kubectl exec POD_NAME -- bash -c "date && echo 1"

Wed Apr 19 19:29:25 UTC 2017
1

你可以像这样使它成为多行:

You can make it multiline like this:

$ kubectl exec POD_NAME -- bash -c "date && 
      echo 1 && 
      echo 2"

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