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[release-1.21] Reduce node startup time #4363

Merged
merged 3 commits into from
Oct 29, 2021
Merged

[release-1.21] Reduce node startup time #4363

merged 3 commits into from
Oct 29, 2021

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brandond
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Proposed Changes

  • If using the built-in CCM, wait for it to clear the uninitialized taint before starting the scheduler to ensure that pods can be scheduled immediately.
  • Optimize agent startup time by watching the local node instead of getting/sleeping in a loop.

Types of Changes

bugfix

Verification

See linked issue

Linked Issues

User-Facing Change

Resolved an issue that would occasionally cause K3s to take more than a minute to schedule initial pods on the first server in a cluster.

Further Comments

@brandond brandond requested a review from a team as a code owner October 29, 2021 22:47
@brandond
Block scheduler startup on untainted node when using embedded CCM
872285e 
Signed-off-by: Brad Davidson <[email protected]>
(cherry picked from commit 3fe460d)
@brandond
Watch the local Node object instead of get/sleep looping
2ef0cfb 
Signed-off-by: Brad Davidson <[email protected]>
(cherry picked from commit 5acd0b9)
@brandond
Fix other uses of NewForConfigOrDie in contexts where we could return…
0882ea5 
… err

Signed-off-by: Brad Davidson <[email protected]>
(cherry picked from commit 3da1bb3)
@brandond brandond merged commit 254d2f6 into k3s-io:release-1.21 Oct 29, 2021
@brandond brandond deleted the fix_4340_release-1.21 branch June 6, 2024 21:18
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Reviewers

@briandowns briandowns briandowns approved these changes

@galal-hussein galal-hussein galal-hussein approved these changes

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3 participants
@brandond @galal-hussein @briandowns