Windows Slave - Connection reset when "scheduled slave overwrite" happens.

[Fred Clausen]

Hello,

As a follow-up to my other question (perhaps the issue on my other question triggers this issue), once the slave agent starts successfully, we're seeing the connection reset seemingly when the "schedule slave overwrite" happens. The full log is available as a Gist but this is how it begins :

	Connecting to computer.example.com
	Checking if Java exists
	java -version returned 1.8.0.
	Installing the Jenkins slave service
	Copying jenkins-slave.exe
	Copying slave.jar
	Copying jenkins-slave.xml
	Registering the service
	Starting the service
	Waiting for the service to become ready
	Connecting to port 58,749
	<===[JENKINS REMOTING CAPACITY]===>Slave.jar version: 2.57
	This is a Windows slave
	ERROR: Connection terminated
	java.net.SocketException: Connection reset
	at java.net.SocketInputStream.read(SocketInputStream.java:209)
	at java.net.SocketInputStream.read(SocketInputStream.java:141)
	at java.io.FilterInputStream.read(FilterInputStream.java:133)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
	at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStream.java:82)
	at hudson.remoting.ChunkedInputStream.readHeader(ChunkedInputStream.java:72)
	at hudson.remoting.ChunkedInputStream.readUntilBreak(ChunkedInputStream.java:103)
	at hudson.remoting.ChunkedCommandTransport.readBlock(ChunkedCommandTransport.java:39)
	at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
	ERROR: Failed to update jenkins-slave.exe
	ERROR: Unexpected error in launching a slave. This is probably a bug in Jenkins Any hints much appreciated! Fred.

[Fred Clausen]

Just to close the loop here - it was my own mistake. In all my experimentation I had accidentally added to Jenkins computers that were speaking to the same VM so they were stepping on each others toes. Apologies for the wasted electrons and time.

Cheers,

Fred.