在kubernetes容器中执行多个命令(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，该脚本需要登录到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

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

运行此脚本后，没有任何输出. 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，如果将其作为多行脚本粘贴到终端，则很有可能会在本地执行.

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.

第二，要告诉bash执行某件事，您需要:bash -c "command".

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

尝试运行此:

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

Wed Apr 19 19:29:25 UTC 2017
1

您可以将其设置为多行:

You can make it multiline like this:

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

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