Jenkins引发错误: jenkins.model.InvalidBuildsDir：${ITEM_ROOTDIR}/builds不存在，可能无法创建

Question

我在Ubuntu上从apt命令行更新了Jenkins，更新后我立即对jenkins进行了sudo apt升级。

jenkins.model.InvalidBuildsDir: ${ITEM_ROOTDIR}/builds does not exist and 
probably cannot be created
at jenkins.model.Jenkins.checkRawBuildsDir(Jenkins.java:3085)
at jenkins.model.Jenkins.loadConfig(Jenkins.java:3009)
Caused: java.io.IOException
at jenkins.model.Jenkins.loadConfig(Jenkins.java:3012)
at jenkins.model.Jenkins.access$1200(Jenkins.java:304)
at jenkins.model.Jenkins$14.run(Jenkins.java:3104)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run 
(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296)
at jenkins.model.Jenkins$5.runTask(Jenkins.java:1068)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker
(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run
(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused: org.jvnet.hudson.reactor.ReactorException
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:282)
at jenkins.InitReactorRunner.run(InitReactorRunner.java:48)
at jenkins.model.Jenkins.executeReactor(Jenkins.java:1102)
at jenkins.model.Jenkins.<init>(Jenkins.java:904)
at hudson.model.Hudson.<init>(Hudson.java:85)
at hudson.model.Hudson.<init>(Hudson.java:81)
at hudson.WebAppMain$3.run(WebAppMain.java:233)
Caused: hudson.util.HudsonFailedToLoad
at hudson.WebAppMain$3.run(WebAppMain.java:250)

Answer 1

当$JENKINS_HOME/jobs目录的权限或所有权不正确时，我就遇到过这种情况。在我的特定情况下，我将作业rsync到一个测试服务器，并且忘记更新文件所有权以匹配Jenkins在测试系统上运行的用户。将所有权更改为正确的用户解决了此问题。

发生此错误的原因可能有很多，但我首先要检查$JENKINS_HOME下的文件和目录，以验证运行Jenkins进程的用户是否可以对它们进行读写。

Answer 2

刚刚找到了一个解决方案。更新后，Jenkins home dir与ubuntu和jenkins所有者之间的文件变得一团糟。我刚把它们的所有权改回了jenkins

sudo chown -R jenkins:jenkins $JENKINS_HOME