So our builds failed again yesterday due to this automatic update kicking
in. I checked, there was indeed a JDK security update so no complaints, but
I need a better system of updating Jenkins.

Given Packer can search for and filter down AMIs, I thought the EC2 plugin
should be able to, too. Solves our issue. Ticket if anyone is interested:

On Thu, 29 Aug 2019 at 10:17, James Green <> wrote:

> I finally used Packer to build an AMI based on Amazon Linux 2 to act as as
> agent. Yesterday, the builds began failing with a Java stack trace.
> Turns out the EC2 instance starts, and in parallel the Jenkins agent
> begins and an auto-upgrade of openjdk kicked off. Further instructions
> failed. Rebuild the AMI and the new agent worked a treat.
> Is there a way of avoiding this problem by preventing Jenkins from
> launching the agent until the boot steps are complete? I cannot be the
> first to encounter this issue :-)
> Thanks,
> James

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