Ubuntu 安装Jenkins报错

背景信息

在Uubunt中已安装了jdk，并在~/.cshrc和/etc/profile文件中都设置了JDK的家目录，然后使用apt-get install jenkins命令安装jenkins时报错如下所示：

1. Reading state information... Done

2. jenkins is already the newest version (2.107.3).

3. 0 upgraded, 0 newly installed, 0 to remove and 414 not upgraded.

4. 1 not fully installed or removed.

5. After this operation, 0 B of additional disk space will be used.

6. Do you want to continue? [Y/n] Y

7. Setting up jenkins (2.107.3) ...

8. Job for jenkins.service failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details.

9. invoke-rc.d: initscript jenkins, action "start" failed.

10. ● jenkins.service - LSB: Start Jenkins at boot time

11. Loaded: loaded (/etc/init.d/jenkins; bad; vendor preset: enabled)

12. Active: failed (Result: exit-code) since Mon 2018-05-14 05:47:25 PDT; 6ms ago

13. Docs: man:systemd-sysv-generator(8)

14. Process: 2990 ExecStart=/etc/init.d/jenkins start (code=exited, status=1/FAILURE)

15.  

16. May 14 05:47:25 ubuntu systemd[1]: Starting LSB: Start Jenkins at boot time...

17. May 14 05:47:25 ubuntu jenkins[2990]: ERROR: No Java executable found in current PATH: /bin:/usr/bin:/sbin:/usr/sbin

18. May 14 05:47:25 ubuntu jenkins[2990]: If you actually have java installed on the system make sure the executable is in the aforementioned path and that 'type...utable path

19. May 14 05:47:25 ubuntu systemd[1]: jenkins.service: Control process exited, code=exited status=1

20. May 14 05:47:25 ubuntu systemd[1]: Failed to start LSB: Start Jenkins at boot time.

21. May 14 05:47:25 ubuntu systemd[1]: jenkins.service: Unit entered failed state.

22. May 14 05:47:25 ubuntu systemd[1]: jenkins.service: Failed with result 'exit-code'.

23. Hint: Some lines were ellipsized, use -l to show in full.

24. dpkg: error processing package jenkins (--configure):

25. subprocess installed post-installation script returned error exit status 1

26. Errors were encountered while processing:

27. jenkins

28. E: Sub-process /usr/bin/dpkg returned an error code (1)

原因分析

从如下报错信息可以看出主要是找不到jdk的bin文件

ERROR: No Java executable found in current PATH: /bin:/usr/bin:/sbin:/usr/sbin

查看环境变量：可以看到是有jdk的，排除环境变量设置问题

1. root@ubuntu:~# echo $PATH

2. /usr/jdk1.8.0_131/bin:/usr/jdk1.8.0_131/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

解决办法

创建一条软链接，如下所示

ln -s /usr/jdk1.8.0_131/bin/java /usr/bin/java

附录

环境变量的配置如下：

1. vi ~/.bashrc

2.  

3. export JAVA_HOME=/usr/jdk1.8.0_131

4. export JRE_HOME=${JAVA_HOME}/jre

5. export PATH=${JAVA_HOME}/bin:${PATH}

6. export CLASSPATH=.:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jart

 

原文地址：https://blog.youkuaiyun.com/wiborgite/article/details/80315043