WAT? Java 9 by default? Are you sure? Java 9 isn't even out yet, it's
planned for at least March 2017 last time I looked. If confirmed, then it
seems like a real Ubuntu bug to me.

2016-11-29 19:01 GMT+01:00 'imker25' via Jenkins Users <
jenkinsci-users@googlegroups.com>:

> Hello again,
>
> well I found a solution for this. Root cause of the problem is, that
> Ubuntu 16.10 uses Java 9 by default. And Jenkins supports Java 8. So I
> removed Java 9 from the node and installed Java 8 again.
> No I can start my node, and all works fine.
>
>
> Am Montag, 28. November 2016 20:45:48 UTC+1 schrieb imker25:
>>
>> Hello,
>>
>> yesterday I upgraded on of my build nodes from Ubuntu 16.04 to 16.10.
>> After the upgrade the slave was unable to connect to the jenkins master
>> with version 2.33 running on Ubuntu 16.04.
>>
>> When I try to start the nodes *.jar file on commad line I get the
>> following output:
>>
>> java -jar slave.jar -jnlpUrl 
>> http://master.node:8080/jenkins/computer/flanders/slave-agent.jnlp -secret 
>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>> Exception in thread "main" java.lang.ExceptionInInitializerError
>>      at javax.crypto.Cipher.getInstance(java.base@9-Ubuntu/Cipher.java:523)
>>      at hudson.remoting.Launcher.parseJnlpArguments(Launcher.java:413)
>>      at hudson.remoting.Launcher.run(Launcher.java:248)
>>      at hudson.remoting.Launcher.main(Launcher.java:218)
>> Caused by: java.lang.SecurityException: Can not initialize cryptographic 
>> mechanism
>>      at 
>> javax.crypto.JceSecurity.<clinit>(java.base@9-Ubuntu/JceSecurity.java:91)
>>      ... 4 more
>> Caused by: java.lang.NullPointerException
>>      at 
>> sun.nio.fs.UnixPath.normalizeAndCheck(java.base@9-Ubuntu/UnixPath.java:75)
>>      at sun.nio.fs.UnixPath.<init>(java.base@9-Ubuntu/UnixPath.java:69)
>>      at 
>> sun.nio.fs.UnixFileSystem.getPath(java.base@9-Ubuntu/UnixFileSystem.java:280)
>>      at java.nio.file.Paths.get(java.base@9-Ubuntu/Paths.java:84)
>>      at 
>> javax.crypto.JceSecurity.setupJurisdictionPolicies(java.base@9-Ubuntu/JceSecurity.java:254)
>>      at 
>> javax.crypto.JceSecurity.access$000(java.base@9-Ubuntu/JceSecurity.java:49)
>>      at 
>> javax.crypto.JceSecurity$1.run(java.base@9-Ubuntu/JceSecurity.java:82)
>>      at 
>> javax.crypto.JceSecurity$1.run(java.base@9-Ubuntu/JceSecurity.java:79)
>>      at 
>> java.security.AccessController.doPrivileged(java.base@9-Ubuntu/Native Method)
>>      at 
>> javax.crypto.JceSecurity.<clinit>(java.base@9-Ubuntu/JceSecurity.java:78)
>>
>> Maybe somebody can help to solve this?
>>
>>
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