[JIRA] (JENKINS-59390) EC2 slave disconnects with EOFException

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colferai@cpqd.com.br (JIRA)

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Sep 16, 2019, 9:07:02 AM9/16/19

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Rogério Colferai created an issue

Jenkins /

JENKINS-59390

EC2 slave disconnects with EOFException

Issue Type:	Bug
Assignee:	FABRIZIO MANFREDI
Components:	ec2-plugin
Created:	2019-09-16 13:06
Environment:	Server Ubuntu 18.04.3 LTS Jenkins ver. 2.176.3 Plugins Amazon EC2 plugin 1.45 SSH Slaves 1.30.1 Slaves:
Priority:	Critical
Reporter:	Rogério Colferai

Hello,

After upgrading jenkins from 2.164.3, to 2.176.3 and EC2 plugin to 1.45 EC2 slaves are disconnecting (intermittent disconnects) in the middle of builds with an EOFException.

 
                                                                java.io.EOFException
 at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2681)
 at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
 at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
 at java.io.ObjectInputStream.<init>(ObjectInputStream.java:358)
 at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:49)
 at hudson.remoting.Command.readFrom(Command.java:140)
 at hudson.remoting.Command.readFrom(Command.java:126)
 at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:36)
 at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63)
Caused: java.io.IOException: Unexpected termination of the channel
 at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport. 
                                                            

I tried to make the rollback through the interface, but the problem continued.

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cimpoiesgeorge@gmail.com (JIRA)

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Oct 1, 2019, 5:20:03 AM10/1/19

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George Cimpoies commented on

JENKINS-59390

Re: EC2 slave disconnects with EOFException

I have the same issue, might want to check the logs of your master Jenkins, in mine I have:

 
                                                                Oct 01, 2019 10:53:45 AM INFO hudson.plugins.ec2.EC2RetentionStrategy internalCheck
Idle timeout of [instance name] after 31 idle minutes, instance statusRUNNING
Oct 01, 2019 10:53:45 AM INFO hudson.plugins.ec2.EC2AbstractSlave idleTimeout
EC2 instance idle time expired: i-07625ee50b5a21bde
Oct 01, 2019 10:53:45 AM INFO hudson.plugins.ec2.EC2OndemandSlave terminate
Terminated EC2 instance (terminated): i-07625ee50b5a21bde
Oct 01, 2019 10:53:45 AM INFO hudson.plugins.ec2.EC2OndemandSlave terminate
Removed EC2 instance from jenkins master: i-07625ee50b5a21bde 
                                                            

So nodes are automatically disconnected after an idle timeout, I've raised a similar issue here: https://issues.jenkins-ci.org/browse/JENKINS-59579