jenkins报错

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1.jenkins报错 `Unable to create the home directory. This is most likely a permission problem`

浏览器中访问 jenkins 报错如下

iShot_2024-09-04_14.40.38

生产中我们的jenkins是以war包形式放在tomcat的 webapps目录下启动的，tomcat设置的端口为8080

浏览器中报错如图后，登陆服务器查看，tomcat进程、监听的8080端口都是存在的，但是还是报错如图所示，尝试重启tomcat问题没有解决，但是有一个很奇怪的问题，当执行 ./bin/shutdown.sh 停止tomcat后，8080端口进程依然存在

参考stackoverflow文章，文章中也有人提到了需要设置jenkins家目录 JENKINS_HOME 变量，并且设置目录所有者为jenkins用户，这里我们的jenkins家目录设置的是 /root/.jenkins，是在 /etc/profile 中设置为 export JENKINS_HOME="/root/.jenkins"，并且 /root/.jenkins 目录所有者就是jenkins用户，也没有改动，查看日志也没有找到有用的信息

尝试重启tomcat无效后，最终解决方法是直接kill掉8080端口对应的进程，然后执行 ./bin/startup.sh 启动tomcat，浏览器刷新等待jenkins重启完毕就可以了

2.jenkins报错 `Jenkins detected that you appear to be running more than one instance of Jenkins that share the same home directory`

Error
Jenkins detected that you appear to be running more than one instance of Jenkins that share the same home directory '/root/.jenkins’. This greatly confuses Jenkins and you will likely experience strange behaviors, so please correct the situation.

This Jenkins:	158454546 contextPath="" at 1541@localhost
Other Jenkins:	1455232034 contextPath="/jenkins20190612" at 1541@localhost

iShot_2024-09-04_14.41.40

jenkins出现 Unable to create the home directory. This is most likely a permission problem 问题后，kill掉进程后重启，运行一段时间后报错如图，参考网上文章是jenkins启动之后会在jenkins home目录($JENKINS_HOME)下生成一个".owner"文件，里面标识了本次jenkins实例的唯一标识，把这个文件删除就可以了

1.jenkins报错 Unable to create the home directory. This is most likely a permission problem​

2.jenkins报错 Jenkins detected that you appear to be running more than one instance of Jenkins that share the same home directory​

1.jenkins报错 `Unable to create the home directory. This is most likely a permission problem`

2.jenkins报错 `Jenkins detected that you appear to be running more than one instance of Jenkins that share the same home directory`