UPSTREAM: 95252: Kube-proxy: Perf-fix: Shrink INPUT chain #469
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
In kubernetes#56164, we had split the reject rules for non-ep existing services into KUBE-EXTERNAL-SERVICES chain in order to avoid calling KUBE-SERVICES from INPUT. However in kubernetes#74394 KUBE-SERVICES was re-added into INPUT. As noted in kubernetes#56164, kernel is sensitive to the size of INPUT chain. This patch refrains from calling the KUBE-SERVICES chain from INPUT and FORWARD, instead adds the lb reject rule to the KUBE-EXTERNAL-SERVICES chain which will be called from INPUT and FORWARD. Conflicts: pkg/proxy/iptables/proxier.go Minor conflict due to 1f7ea16
|
/assign @danwinship |
|
/lgtm |
|
/approve |
|
[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: danwinship, tssurya The full list of commands accepted by this bot can be found here. The pull request process is described here
Needs approval from an approver in each of these files:
Approvers can indicate their approval by writing |
openshift-ci-robot
added
the
approved
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
backport of #442 to pick upstream commit
this will be rebased into sdn branch 4.6