fix: duplicate --max-pods arguments in KUBELET_EXTRA_ARGS #8533
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guessi changed the title 
guessi force-pushed the fix-duplicate-max-pods-7946 branch from f4d486c to 8e572a9 Compare 
| set -ex | ||
| ` | ||
| script += fmt.Sprintf(`sed -i 's/KUBELET_EXTRA_ARGS=$2/KUBELET_EXTRA_ARGS="$2 --max-pods=%d"/' /etc/eks/bootstrap.sh`, maxPods) | ||
| script += fmt.Sprintf(`sed -i 's/KUBELET_EXTRA_ARGS=$2/KUBELET_EXTRA_ARGS="$(echo "$2" | sed "s/--max-pods=[0-9]*//" | sed "s/ */ /g" | sed "s/^ *//" | sed "s/ *$//") --max-pods=%d"/' /etc/eks/bootstrap.sh`, maxPods) |
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Are the duplicated --max-pods the same value or one value disagreeing?
Instead of removing the max pod with sed can we avoid setting it in two places? Still wrapping my head around this issue.
Contributor Author
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I agree it should be prevented from the beginning, but we don't have control for what could be passed via $2 as it could always be customized by end users. ( unlike AL2023, it's all handled by NodeConfig )
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Description
Fixes #7946 by preventing duplicate
--max-podsarguments inKUBELET_EXTRA_ARGSwhen using the deprecatedMaxPodsPerNodesetting with AL2 managed nodegroups.Problem
When
MaxPodsPerNodeis set, eksctl'smakeMaxPodsScriptfunction appends--max-podstoKUBELET_EXTRA_ARGSwithout checking if it already exists, resulting in:Solution
Modified
makeMaxPodsScriptto:--max-pods=<number>arguments using sed--max-podsvalueImpact
--max-podsissueTesting
The fix ensures only one
--max-podsargument appears inKUBELET_EXTRA_ARGS, with eksctl'sMaxPodsPerNodevalue taking precedence.