I just spun up a new Nomad cluster. I have several tasks running. The latest deployment for all of them is marked as “successful”. However, I checked back and found that a couple of them been moved into an allocation status of “pending”. This would usually be fine, except that they have been pending…

I think I figured it out. I remembered having run into a similar situation before. On the job that was having the problem we were specifying constraint { distinct_hosts = true }, while at the same time also constraining it to a single node. This caused a deadlock that would not allow it to restart…

Well, I hoped that was the problem. However, I checked on the jobs today, and once again they were stuck in Restarting mode, forever and ever. Like marble statues chiseled to perfection.

Nomad task restarting but never restarts

Nomad

SunSparc May 13, 2022, 6:03pm 2

Looks like someone else had a similar problem: Nomad task pending for few minutes

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Nomad task restarting but never restarts

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