Some triggered Tekton jobs should have resource requests/limits

[abayer]

The ones I notice right now are the plumbing-image-build and pull-pipeline-kind-k8s-v1-21-e2e PR PipelineRuns, and the build-and-push-test-runner cronjob triggered PipelineRun. I've seen the test-runner image builds cause OOMs on their nodes, and the plumbing-image-build one I'm looking at right now is at over 5gb memory used. The pull-pipeline-kind-k8s-v1-21-e2e pods that I've seen have ranged between 2 and 4gb memory used.

None of them (or any of the other Tekton PipelineRuns, for that matter) have any requests or limits configured, so they can end up on the same node, or a node with one of the other high memory usage pods always running in the cluster (i.e., prometheus and kafka) and cause problems. Given that dogfooding is hardcoded to 5 n1-standard-4s, with ~13gb allocatable memory, it's pretty easy for just a few of the high memory pods to end up on the same node and swamp it.

[tekton-robot]

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/lifecycle stale

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[tekton-robot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten with a justification.
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/lifecycle rotten

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[tekton-robot]

Rotten issues close after 30d of inactivity.
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/close

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[tekton-robot]

@tekton-robot: Closing this issue.

In response to this:

Rotten issues close after 30d of inactivity.
Reopen the issue with /reopen with a justification.
Mark the issue as fresh with /remove-lifecycle rotten with a justification.
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/close

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[afrittoli]

/remove-lifecycle rotten

[afrittoli]

/lifecycle frozen