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Ensure iface.FirstPublicAddress isn't a secondary IP #5393

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merged 2 commits into from
Jan 8, 2025
Merged

Ensure iface.FirstPublicAddress isn't a secondary IP #5393

merged 2 commits into from
Jan 8, 2025

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juanluisvaladas
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@juanluisvaladas juanluisvaladas commented Dec 31, 2024 •
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Description

This fixes only the automatic address detection for etcd. If a user configures them manually it doesn't attempt to prevent the error.

Fixes #4664

Type of change

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Documentation update

How Has This Been Tested?

  • Manual test
  • Auto test added

Checklist:

  • My code follows the style guidelines of this project
  • My commit messages are signed-off
  • I have performed a self-review of my own code
  • I have commented my code, particularly in hard-to-understand areas
  • I have made corresponding changes to the documentation
  • My changes generate no new warnings
  • I have added tests that prove my fix is effective or that my feature works
  • New and existing unit tests pass locally with my changes
  • Any dependent changes have been merged and published in downstream modules
  • I have checked my code and corrected any misspellings

@juanluisvaladas juanluisvaladas requested review from a team as code owners December 31, 2024 16:37
@juanluisvaladas juanluisvaladas mentioned this pull request Jan 2, 2025
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@juanluisvaladas juanluisvaladas marked this pull request as draft January 7, 2025 12:58
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github-actions bot commented Jan 7, 2025

This pull request has merge conflicts that need to be resolved.

@juanluisvaladas juanluisvaladas added this to the 1.32 milestone Jan 7, 2025
@juanluisvaladas juanluisvaladas marked this pull request as ready for review January 7, 2025 22:53
@juanluisvaladas juanluisvaladas marked this pull request as draft January 7, 2025 23:01
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On one of my previous attempts I noticed a few things I didn't like in the check-backup inttest. I don't think these are worth a full PR so I decided to sneak these here, but it can be dropped as it's not really the intent of this PR.

@juanluisvaladas juanluisvaladas marked this pull request as ready for review January 8, 2025 11:31
twz123
twz123 reviewed Jan 8, 2025
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I think the title "Prevent CPLB VIPs to be etcd's peer address" is a bit misleading. That's the issue that's getting fixed, but I think a more technical title might be a better fit for the PR. Something that mentions that we're now disregarding secondary IPs when detecting IP addresses.

internal/pkg/iface/iface_linux.go Show resolved Hide resolved
internal/pkg/iface/iface_linux.go Show resolved Hide resolved
inttest/backup/backup_test.go Outdated Show resolved Hide resolved
@juanluisvaladas juanluisvaladas changed the title Prevent CPLB VIPs to be etcd's peer address Ensure iface.FirstPublicAddress isn't a secondary IP Jan 8, 2025
juanluisvaladas and others added 2 commits January 8, 2025 16:19
@juanluisvaladas @twz123
Ensure FirstPublicAddress isn't a secondary addr
b43457c 
Only for linux

Co-authored-by: Tom Wieczorek <twz123@users.noreply.github.com>
Signed-off-by: Juan-Luis de Sousa-Valadas Castaño <jvaladas@mirantis.com>
@juanluisvaladas
Minor refactor in backup inttest
5a69092 
Add -d to make things easier to troubleshoot, remove redundant checks,
fix typos and make some checks slightly shorter.

Signed-off-by: Juan-Luis de Sousa-Valadas Castaño <jvaladas@mirantis.com>
twz123
twz123 approved these changes Jan 8, 2025
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internal/pkg/iface/iface.go
if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
if ipnet.IP.To4() != nil {
return ipnet.IP.String(), nil
if a != nil && !a.IP.IsLoopback() {
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The nil check cloud theoretically be removed, because both sequence implementations won't yield nil values.

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@juanluisvaladas juanluisvaladas Jan 8, 2025 •
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Good point, since this is blocking #5397 (once this merges, there will be a conflict) and it's approved I'll sneak it into #5397.
This way I avoid having this reviewed again...

@juanluisvaladas juanluisvaladas merged commit 0a8fafb into k0sproject:main Jan 8, 2025
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@twz123 twz123 twz123 approved these changes

@kke kke Awaiting requested review from kke kke is a code owner automatically assigned from k0sproject/k0s-maintainers

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CPLB continue to add CPLB IP as etcd.peerAddress
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