升级Jenkins后，无法启动通过SSH连接的从节点

Question

[02/28/14 14:20:02] [SSH] Checking java version of java
Couldn't figure out the Java version of java
bash: java: command not found

[02/28/14 14:20:02] [SSH] Checking java version of /usr/bin/java
Couldn't figure out the Java version of /usr/bin/java
bash: /usr/bin/java: No such file or directory

[02/28/14 14:20:02] [SSH] Checking java version of /usr/java/default/bin/java
Couldn't figure out the Java version of /usr/java/default/bin/java
bash: /usr/java/default/bin/java: No such file or directory

[02/28/14 14:20:02] [SSH] Checking java version of /usr/java/latest/bin/java
Couldn't figure out the Java version of /usr/java/latest/bin/java
bash: /usr/java/latest/bin/java: No such file or directory

[02/28/14 14:20:02] [SSH] Checking java version of /usr/local/bin/java
Couldn't figure out the Java version of /usr/local/bin/java
bash: /usr/local/bin/java: No such file or directory

[02/28/14 14:20:02] [SSH] Checking java version of /usr/local/java/bin/java
Couldn't figure out the Java version of /usr/local/java/bin/java
bash: /usr/local/java/bin/java: No such file or directory

[02/28/14 14:20:02] [SSH] Checking java version of         /users/mdspadm/tools/hudson_tmp/jdk/bin/java
Couldn't figure out the Java version of /users/mdspadm/tools/hudson_tmp/jdk/bin/java
bash: /users/mdspadm/tools/hudson_tmp/jdk/bin/java: No such file or directory

[02/28/14 14:20:03] [SSH] Checking java version of     /users/apache/tools/hudson/usr/lib/jvm/jre-1.5.0-ibm//bin/java
[02/28/14 14:20:03] [SSH] /users/apache/tools/hudson/usr/lib/jvm/jre-1.5.0-ibm//bin/java -version returned 1.5.0.
[02/28/14 14:20:03] [SSH] Starting sftp client.
[02/28/14 14:20:03] [SSH] Copying latest slave.jar...
[02/28/14 14:20:04] [SSH] Copied 346,845 bytes.
Expanded the channel window size to 4MB
[02/28/14 14:20:04] [SSH] Starting slave process: cd "/users/mdspadm/tools/hudson_tmp"   && /users/apache/tools/hudson/usr/lib/jvm/jre-1.5.0-ibm//bin/java  -jar slave.jar
<===[JENKINS REMOTING CAPACITY]===>channel started
java.io.IOException: Remote call on tunnel_mspvq330 failed
at hudson.remoting.Channel.call(Channel.java:731)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:449)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:345)
at hudson.plugins.sshslaves.SSHLauncher.startSlave(SSHLauncher.java:812)
at hudson.plugins.sshslaves.SSHLauncher.launch(SSHLauncher.java:598)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:228)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassFormatError: Failed to load 

参考文献:http://jenkins-ci.org/content/good-bye-java6

Answer 1

如果您已经从一个非常老的版本升级了Jenkins，我建议您更新Java,

还有其他问题，可能是Java bin路径的System/Envronment变量丢失或不正确？

Java在最新的更新中还引入了新的安全特性，所以要注意可能需要的任何额外身份验证。