Wei Huang created YUNIKORN-2009:
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Summary: Placeholder pods should be created with limits
Key: YUNIKORN-2009
URL: https://issues.apache.org/jira/browse/YUNIKORN-2009
Project: Apache YuniKorn
Issue Type: Improvement
Components: shim - kubernetes
Reporter: Wei Huang
Assignee: Wei Huang
In some k8s env, namespace is enabled with {*}{{LimitRange}}{*}:
{code:java}
apiVersion: v1
kind: LimitRange
metadata:
name: default
spec:
limits:
- default:
cpu: 100m
ephemeral-storage: 10Gi
memory: 128Mi
defaultRequest:
cpu: 100m
ephemeral-storage: 1Gi
memory: 128Mi
type: Container{code}
However, shim code spawns placeholder pods with requests only, which cause the
placeholder pods rejected by API server, and hence the whole Job gets into
pending:
{code:java}
2023-09-29T13:19:17.851-0700 ERROR cache/placeholder_manager.go:99 failed
to create placeholder pod {"error": "Pod \"tg-foo-task-group-foo-gang-0\" is
invalid: spec.containers[0].resources.requests: Invalid value: \"1\": must be
less than or equal to cpu limit"}{code}
I'd propose setting the same amount of request to the placeholder Pod's limits,
so system's LimitRange won't auto-set lower limits value.
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