Load ipvs modules before enabling conntrack

[mneverov]

What kind of PR is this?

Bugfix

Why this PR is needed / What this PR do?

This PR loads ipvs modules.

Which issue(s) this PR fixes?

When run locally with ipvs as a backend, kpng fail to start with error:

setup.go:36] unable to initialize ipvs managererror can't set sysctl net/ipv4/vs/conntrack to 1: open /proc/sys/net/ipv4/vs/conntrack: no such file or directory

The error occur because ipvs modules are not loaded, so there is no /proc/sys/net/ipv4/vs directory and the file conntrack cannot be created.

Fixes #

Additional information about this PR

kind --version
kind version 0.20.0

Node is running Ubuntu 22.04.2 LTS:

cat /proc/sys/kernel/osrelease
6.2.0-26-generic

[aroradaman]

you can move both the changes in a separate commit

[mneverov]

done

[aroradaman]

Thank you @mneverov for the PR,
have requested few changes.

[aroradaman]

/ok-to-test

[aroradaman]

/lgtm

[mneverov]

@aroradaman @mcluseau the reason ipvs backend works in e2e tests is that ipvsadm is installed and initialized, which creates the .../vs folder. I wonder if this step can be removed now.

[aroradaman]

@aroradaman @mcluseau the reason ipvs backend works in e2e tests is that ipvsadm is installed and initialized, which creates the .../vs folder. I wonder if this step can be removed now.

@mneverov can you create a new PR removing the step you mentioned to test that out 🙂

[aroradaman]

/approve
thanks!

[k8s-ci-robot]

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[mneverov]

@aroradaman @mcluseau the reason ipvs backend works in e2e tests is that ipvsadm is installed and initialized, which creates the .../vs folder. I wonder if this step can be removed now.

@mneverov can you create a new PR removing the step you mentioned to test that out 🙂

@aroradaman ptal #522