[Jenkins]配置任务中的坑s

Jenkins

背景&＃xff1a;在任务中使用了adb命令

adb 使用时要在服务器上配Android-home的环境变量的

配置完成之后发现在服务器上 adb OK&＃xff0c;但是在jenkins 执行job时不OK

参考一下两篇文档

https://stackoverflow.com/questions/29216244/jenkins-build-failed-due-to-missing-android-sdk

http://www.linuxdiyf.com/linux/28771.html

1. 在jenkins 设置里配置Android-home,然而并没有用

2. 在Execute shell 里将#!/bin/bash 改成 #!/bin/bash -ilex

jenkins没有加载/etc/profile导致&＃xff0c;需要在jenkins调用shell脚本的最前面加一行脚本&＃xff0c;#!/bin/bash -ilex&＃xff0c;可以通过-i参数和-l参数让bash为login shell and interactive shell&＃xff0c;就可以读取/etc/profile和~/.bash_profile等文件

3. 实际挨个试了下#!/bin/bash -ilex中的各个参数 发现有用的是-l

对于e参数表示一旦出错,就退出当前的shell&＃xff0c;x参数表示可以显示所执行的每一条命令。

&＃39;&＃39;&＃39;

-l        Make bash act as if it had been invoked as a login shell (see

                 INVOCATION below).

When  bash is invoked as an interactive login shell, or as a non-inter-

       active shell with the --login option, it first reads and executes  com-

       mands  from  the file /etc/profile, if that file exists.  After reading

       that file, it looks for ~/.bash_profile, ~/.bash_login, and ~/.profile,

       in  that order, and reads and executes commands from the first one that

       exists and is readable.  The --noprofile option may be  used  when  the

       shell is started to inhibit this behavior.

&＃39;&＃39;&＃39; 

 综上&＃xff0c;就是加载了/etc/profile或者其他几个配置环境变量的文件

所以直接改成在 shell 脚本里增加source /etc/profile就好啦~

期初是以为是 #!/bin/bash -ilex 中四个参数导致console output 没有输出&＃xff0c;后来突然意识到是python的print应该有buffer的问题

https://stackoverflow.com/questions/22826006/how-to-get-python-print-result-in-jenkins-console-output

https://stackoverflow.com/questions/11631951/jenkins-console-output-not-in-realtime

有两种解释

1.jenkins 要输入换行符才能展示数据

Any output to stdout from a process spawned by Jenkins should be captured by Console Output. One caveat is that it won&＃39;t be displayed until a newline character is printed, so make sure your lines are terminated.

2.print有buffer

• ruby or python or any sensible scripting language will buffer the output; this is in order to minimize the IO; writing to disk is slow, writing to a console is slow...
• usually the data gets flush()&＃39;ed automatically after you have enough data in the buffer with special handling for newlines. e.g. writing a string without newline then sleep() would not write anything until after the sleep() is complete (I&＃39;m only using sleep as an example, feel free to substitute with any other expensive system call).

解决方法看到两个

1.print 信息后加sys.stdout.flush()

2. 执行python时增加 -u 参数&＃xff0c;即 python -u XXX.py

• for python, you can use python -u or the environment variable PYTHONUNBUFFERED to make stdin/stdout/stout not buffered, but there are other solutions that do not change stdin or stderr

  export PYTHONUNBUFFERED&＃61;1