Jenkins无法启动的问题

Jenkins下面配置了很多自动发布的程序。今天早上忽然之间就启动不了了。报错如下。请大神帮忙分析原因。
Jenkins home directory: /root/.jenkins found at: $user.home/.jenkins
09-Apr-2016 10:40:45.446 SEVERE [localhost-startStop-1] hudson.util.BootFailure.publish Failed to initialize Jenkins
hudson.util.NoTempDir: java.io.IOException: No such file or directory
at hudson.WebAppMain.contextInitialized(WebAppMain.java:195)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4738)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5181)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1101)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1816)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: No such file or directory
at java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.io.File.createTempFile(File.java:2024)
at java.io.File.createTempFile(File.java:2070)
at hudson.WebAppMain.contextInitialized(WebAppMain.java:192)
... 13 more