Having one slave attached to 2 different masters ?

Taher Furniturewala

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Aug 12, 2015, 8:54:49 PM8/12/15

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Hi ,

Does anyone know if this is possible and if they have done it ? ie Having a slave being attached to and working for 2 different Jenkins masters ?

Thanks

Taher .

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Björn Pedersen

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Aug 13, 2015, 3:09:50 AM8/13/15

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Hi,

it should be no problem to e.g. have ssh-slaves from to different masters running on the same machine(if you ensure to use different ports. But of course you will have 2 slave.jar running then. A single slave.jar process is always bound to a single master only.

Khai Do

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Aug 13, 2015, 12:35:05 PM8/13/15

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Yes, we do that with ssh connected slaves. if what you are really after is multi-master configuration you should check out the gearman plugin: https://wiki.jenkins-ci.org/display/JENKINS/Gearman+Plugin

Chanda Unmack

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Aug 17, 2015, 4:56:58 PM8/17/15

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We've done that with both ssh slaves and windows slaves with jnlp; ssh is definitely easier :)

Both require separate root fs in the slave definition and for windows, had to modify the jenkins-slave.xml to change the name of the service so that each one is unique.

Taher Furniturewala

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Aug 17, 2015, 11:27:50 PM8/17/15

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Thank you [Bjorn , Khai , Chanda ] for the responses .

I have set different remote root directories for both slaves and also set different ports for both . Am trying to connect via ssh .

Its still not happening : ie the connection is not maintained . Slave ‘a’ connects and then gets disconnected when slave ‘b’ connects . The ps output on the master shows only 1 slave jar process at any time .

The below is see in the log of the slave which gets disconnected . : any ideas ?

Note: Both the masters are at Jenkins 1.580.1

<===[JENKINS REMOTING CAPACITY]===>channel started

Slave.jar version: 2.47

This is a Unix slave

Slave successfully connected and online

debug1: client_input_channel_req: channel 0 rtype exit-status reply 0

debug1: channel 0: free: client-session, nchannels 1

debug1: fd 0 clearing O_NONBLOCK

debug1: fd 1 clearing O_NONBLOCK

debug1: fd 2 clearing O_NONBLOCK

debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 41.1 seconds