CODEWITHSUNDEEP
javanetwork-programmingjenkinscontinuous-integrationvirtual-machine
SonicWind
SonicWind

Reputation: 58

Jenkins Slaves Randomly Disconnect from the Master

I'm currently setting up a vm cluster to run Jenkins for use with a large project, I have jenkins set up, all the VM's are running Windows 7 64-bit with plenty of ram, disk space and the slave agents deployed (running as windows service).I keep getting the following error after a few minutes. 

Connection was broken

java.nio.channels.AsynchronousCloseException
at java.nio.channels.spi.AbstractInterruptibleChannel.end(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at hudson.remoting.SocketChannelStream$1.read(SocketChannelStream.java:33)
at sun.nio.ch.ChannelInputStream.read(Unknown Source)
at sun.nio.ch.ChannelInputStream.read(Unknown Source)
at sun.nio.ch.ChannelInputStream.read(Unknown Source)
at java.io.InputStream.read(Unknown Source)
at sun.nio.ch.ChannelInputStream.read(Unknown Source)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStream.java:82)
at java.io.ObjectInputStream$PeekInputStream.peek(Unknown Source)
at java.io.ObjectInputStream$BlockDataInputStream.peek(Unknown Source)
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at hudson.remoting.Command.readFrom(Command.java:92)
at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:70)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

The slaves disconnect for 30 seconds to 2 minutes and then reconnect, the response time also varies wildly between 400ms and 5 seconds.

The cluster is on its own switch and a ping from any machine returns a < 1ms time.

Any help?

Upvotes: 4

Views: 3392

Answers (1)

Nicolas Mommaerts
Nicolas Mommaerts

Reputation: 3263

There are a lot of bugs with the new NIO stuff in the Jenkins slave. We are experiencing similar serious instability issues up until the latest release at this time of writing. For example: https://issues.jenkins-ci.org/browse/JENKINS-22758

This posts deserves an update (August 2017): we are running 2.46 now and the slaves are a lot more stable.

Upvotes: 4

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