[Jenkins-infra] Maintenance Window - ci.jenkins.io - 2019/03/06 - 9AM UTC+2

Olblak me at olblak.com
Mon Jun 3 09:38:09 UTC 2019


Hi Everybody, 

I am happy to announce that ci.jenkins.io is now running on Java 11.

Thanks Adrien Lecharpentier and Baptiste Mathus for their help during the migration and more globally thanks to all the people 
involved in the platform-sig <https://jenkins.io/sigs/platform/> for their work on jenkins running on java 11.

Excepted minor issues that we fixed during the migration, upgrading from jdk8 to jdk11 was really easy.

In short we executed following steps:
 * Set jenkins master in maintenance mode "Prepare for shutdown".
 * Backup jenkins home, yolo
 * Update JAVA_OPTS with options specific to java11 as defined here <https://github.com/jenkins-infra/jenkins-infra/blob/66337c3cbff1f5ab0cc773ba4a55825f01a6b5cb/hieradata/clients/azure.ci.jenkins.io.yaml#L12> mainly related to the garbage collector
 * Move from the docker image jenkins/jenkins:lts-alpine to jenkins/jenkins:lts-jdk11
 * Restart Jenkins
 * Ensure linux/windows agents use the same major java version than master ( java 11 )

For the windows agent we had to change the init script to use zulu11.31.11 <https://cdn.azul.com/zulu/bin/zulu11.31.11-ca-jre11.0.3-win_x64.zip> instead of zulu8.28.0.1 <https://cdn.azul.com/zulu/bin/zulu8.28.0.1-jdk8.0.163-win_x64.zip>
And the linux agent was already using java11 anyway since we upgrade the agent to ubuntu 18.04

As usual, feel free to report any issues that you may have about ci.jenkins.io, on issues.jenkins-ci.org using the 'infra' project.

Remark, upgrading the other jenkins intances to java11 is not yet planned.

Cheers

---
-> gpg --keyserver keys.gnupg.net --recv-key 52210D3D
---




On Mon, May 27, 2019, at 11:57 AM, Olblak wrote:
> Hi Everybody, 
> 
> The platform sig <https://jenkins.io/sigs/platform/> has been working hard on running jenkins with java11 and it's now time to use it in a real life scenario. 
> 
> Adrien Lecharpentier and I will upgrade ci.jenkins.io next Monday 3th of June at 9AM UTC+2.
> 
> As usually with such maintenance, we'll communicate in different ways:
> * We'll be on a call using Google Meet <https://meet.google.com/hec-yjep-how> and on irc #jenkins-infra
> * We'll notify on this mail thread and update INFRA-2115 <https://issues.jenkins-ci.org/browse/INFRA-2115> when the migration is done.
> 
> In short we'll execute following steps:
> * Set jenkins master in maintenance mode "Prepare for shutdown"
> * Backup jenkins home
> * Update JAVA_OPTS with options specific to java11
> * Move from the docker image jenkins/jenkins:lts-alpine to jenkins/jenkins:jdk11
> * Ensure linux/windows agents use the same major java version than master ( java 11 )
> 
> Remark: We won't (voluntarily ) modify the other jenkins instances, at least for this maintenance window.
> 
> Cheers
> 
> ---
> -> gpg --keyserver keys.gnupg.net --recv-key 52210D3D
> ---
> 
> 

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