On 06/11/2015 18:49, jks3 wrote:
Hi,

While not a newbie to Jenkins, I am certainly a newbie to Jenkins admin and I've been handed the task of upgrading our Jenkins server from its current version of *1.564* to the latest, which, as of today, is *1.636*.

Now, when someone else here attempted this some time ago, they had issues (the details of which I don't currently have) but, suffice it to say that they felt the need to roll back to our current version. I believe they tried to jump to a version multiple versions up (possibly to 1.600) but not the latest at the time. So, I am looking for advise as to the best approach to this.

I don't want to have to upgrade a version at a time (84 upgrades) so, besides perhaps using the 'major enhancement' marker in the *Changelog* <https://jenkins-ci.org/changelog>, what would be the recommended intermediate versions to which I should upgrade?

*Any other words of advice?*

1) backup your JENKINS_HOME  (accidents happen)
2) don't go to 1.636 unless you have to - use an LTS <https://wiki.jenkins-ci.org/display/JENKINS/LTS+Release+Line>if you want stability which it appears you do as you have not upgraded in a long time!
3) make sure any JNLP slaves have their slave.jar updated

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