[症状]
>使用官方步骤安装Jenkins,但失败并显示错误消息无法启动LSB：在启动时启动Jenkins.
>重现步骤
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add - sudo apt-add-repository "deb https://pkg.jenkins.io/debian-stable binary/" sudo apt install jenkins
>控制台日志
gaspar@jenkins:~$sudo apt install jenkins ... Setting up default-jre-headless (2:1.9-62ubuntu2) ... Setting up jenkins (2.107.2) ... Job for jenkins.service Failed because the control process exited with error code. See "systemctl status jenkins.service" and "journalctl -xe" for details. invoke-rc.d: initscript jenkins,action "start" Failed. ● jenkins.service - LSB: Start Jenkins at boot time Loaded: loaded (/etc/init.d/jenkins; generated) Active: Failed (Result: exit-code) since Thu 2018-04-19 10:03:05 UTC; 9ms ago Docs: man:systemd-sysv-generator(8) Process: 27282 ExecStart=/etc/init.d/jenkins start (code=exited,status=7) Apr 19 10:03:03 evt-jenkins systemd[1]: Starting LSB: Start Jenkins at boot time... Apr 19 10:03:03 evt-jenkins jenkins[27282]: * Starting Jenkins Automation Server jenkins Apr 19 10:03:03 evt-jenkins su[27313]: Successful su for jenkins by root Apr 19 10:03:03 evt-jenkins su[27313]: + ??? root:jenkins Apr 19 10:03:03 evt-jenkins su[27313]: pam_unix(su:session): session opened for user jenkins by (uid=0) Apr 19 10:03:03 evt-jenkins su[27313]: pam_unix(su:session): session closed for user jenkins Apr 19 10:03:05 evt-jenkins jenkins[27282]: ...fail! Apr 19 10:03:05 evt-jenkins systemd[1]: jenkins.service: Control process exited,code=exited status=7 Apr 19 10:03:05 evt-jenkins systemd[1]: jenkins.service: Failed with result 'exit-code'. Apr 19 10:03:05 evt-jenkins systemd[1]: Failed to start LSB: Start Jenkins at boot time. dpkg: error processing package jenkins (--configure): installed jenkins package post-installation script subprocess returned error exit status 1 ...
[环境]
> Ubuntu 18.04 LTS Beta2
>jenkins2.107.2
[根本原因]
> Ubuntu 18.04 LTS使用Java 9作为默认java
> Jenkins 2.107.2仍然使用Java 8
[解]
>在安装Jenkins之前安装Java 8
sudo add-apt-repository ppa:webupd8team/java sudo apt install oracle-java8-installer wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add - sudo apt-add-repository "deb https://pkg.jenkins.io/debian-stable binary/" sudo apt install jenkins
