[Resolved] Jenkins - mvn: command not found

在Linux中使用Jenkins時, 在jenkinsFile中添加了sh 'mvn --version'命令,但Jenkins在build時報錯以下:

> git rev-list --no-walk 75df912a72c7971f61d5c48b80b05bdc1243f86d # timeout=10
[Pipeline] }
[Pipeline] // stage
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (build)
[Pipeline] sh
+ mvn --version
/var/lib/jenkins/workspace/SpringbootDeployment_master@tmp/durable-65e0b685/script.sh: line 1: mvn: command not found
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline

GitHub has been notified of this commit’s build result

ERROR: script returned exit code 127
Finished: FAILURE

仔細查了一下, 發現了問題的緣由. 我對於java或maven的路徑的環境變量是放在/etc/profile中的, 而/etc/profile只有在用戶登陸的時候纔會被load,Jenkins在運行命令時,使用的是Non-login的方式,而這種方式在運行命令時,/etc/profile是不會被load進來的,因此jenkins只能在當前路徑下尋找可執行文件.

解決方式:
在Jenkins的設置中能夠設置全局變量, jenkins主頁面->Manage Jenkins->Configure System->Global Properties 中, 將Environment variables複選框選中,會出來List of variables, 填入如下內容:

• name: JAVA_HOME value:XXX
• name: M2_HOME value:/usr/cyz/apache-maven-3.6.1
• name: PATH+EXTRA value: $M2_HOME/bin

注意最後標紅的 PATH+EXTRA, 這表示PATH=EXTRA:$PATH, 即擴展當前的PATH變量.
設置以後build成功.