November 2018
Intermediate to advanced
270 pages
6h 54m
English
Content preview from Kubernetes on AWS
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Concurrency policy
Kubernetes CronJob, in contrast to the traditional CronJob, allows us to decide what happens when a job overruns and we reach the scheduled time while the previous job is still running. We can control this behavior by setting the spec.concurrencyPolicy field on the CronJob. There are three possible policies that we can choose:
- By default, if the field is unset then we get the Allow policy. This behaves just like a traditional CronJob and allows multiple instances of a job to run at the same time. If you stick with this, you should be sure that your jobs indeed get completed at some point, or your cluster could end up overwhelmed with many jobs running at the same time.
- The Forbid policy prevents any new jobs from starting ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.