Jenkins and HA

[Walter Heestermans]

Hi,

How can setup HA with Jenkins OpenSource? I have now one master running and two agents, can I just add a second master and put an LB in front of it. The Jenkins home of my current master is on shared file system.

Regards

walter

[nicolas de loof]

you can't do this way, two masters sharing same JENKINS_HOME would override each other configuration on disk. Jenkins is designed as a single-instance server.

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[Walter Heestermans]

So, we have to go to solutions like CloudBees? Other solutions available for HA and to look at?

Op dinsdag 5 december 2017 10:13:27 UTC+1 schreef nicolas de loof:

you can't do this way, two masters sharing same JENKINS_HOME would override each other configuration on disk. Jenkins is designed as a single-instance server.

2017-12-05 8:30 GMT+01:00 Walter Heestermans <walter.he...@gmail.com>:

Hi,

How can setup HA with Jenkins OpenSource? I have now one master running and two agents, can I just add a second master and put an LB in front of it. The Jenkins home of my current master is on shared file system.

Regards

walter

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[nicolas de loof]

#disclaimer I'm working by CloudBees
CloudBees indeed has such a HA solution based on active/passive jenkins masters.

I don't know if there's another mature alternative, haven't really searched for it nor tested.

You might be interested by http://www.voleg.info/jenkins-ha-cluster-centos-drbd-pacemaker-kvm.html

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[Walter Heestermans]

Are you saying that even with CloudBees you have active/passive masters, but can you have multiple masters active too? Or is this not the setup of masters?

Op dinsdag 5 december 2017 10:26:42 UTC+1 schreef nicolas de loof:

#disclaimer I'm working by CloudBees
CloudBees indeed has such a HA solution based on active/passive jenkins masters.

I don't know if there's another mature alternative, haven't really searched for it nor tested.

You might be interested by http://www.voleg.info/jenkins-ha-cluster-centos-drbd-pacemaker-kvm.html

2017-12-05 10:17 GMT+01:00 Walter Heestermans <walter.he...@gmail.com>:

So, we have to go to solutions like CloudBees? Other solutions available for HA and to look at?

Op dinsdag 5 december 2017 10:13:27 UTC+1 schreef nicolas de loof:

you can't do this way, two masters sharing same JENKINS_HOME would override each other configuration on disk. Jenkins is designed as a single-instance server.

2017-12-05 8:30 GMT+01:00 Walter Heestermans <walter.he...@gmail.com>:

Hi,

How can setup HA with Jenkins OpenSource? I have now one master running and two agents, can I just add a second master and put an LB in front of it. The Jenkins home of my current master is on shared file system.

Regards

walter

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[nicolas de loof]

CloudBees HA is indeed based on active/passive master, there's no support for mutli-active-masters (yet, I don't know the roadmap for this)

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[Victor Martinez]

There is a plugin which I have never used but it might be relevant for this question:

- https://wiki.jenkins.io/display/JENKINS/Gearman+Plugin

Although, it seems it's developed by OpenStack and IIRC it was acquired a couple of years ago likely that's the reason no further development since then.