Add sch_netem kernel module for network emulation

[LaumiH]

Signed-off-by: Laura-Marie Henning laura-marie.henning@stud.h-da.de

Fixes #6033.

Network emulation can e.g. be used for chaos engineering, for which minikube is a valuable environment to test new chaos experiments in. tc qdisc add dev eth0 root netem commands do now work inside minikube and priviledged containers.

[k8s-ci-robot]

Thanks for your pull request. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please follow instructions at https://git.k8s.io/community/CLA.md#the-contributor-license-agreement to sign the CLA.

It may take a couple minutes for the CLA signature to be fully registered; after that, please reply here with a new comment and we'll verify. Thanks.

---

• If you've already signed a CLA, it's possible we don't have your GitHub username or you're using a different email address. Check your existing CLA data and verify that your email is set on your git commits.
• If you signed the CLA as a corporation, please sign in with your organization's credentials at https://identity.linuxfoundation.org/projects/cncf to be authorized.
• If you have done the above and are still having issues with the CLA being reported as unsigned, please log a ticket with the Linux Foundation Helpdesk: https://support.linuxfoundation.org/
• Should you encounter any issues with the Linux Foundation Helpdesk, send a message to the backup e-mail support address at: login-issues@jira.linuxfoundation.org

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[k8s-ci-robot]

Welcome @LaumiH!

It looks like this is your first PR to kubernetes/minikube 🎉. Please refer to our pull request process documentation to help your PR have a smooth ride to approval.

You will be prompted by a bot to use commands during the review process. Do not be afraid to follow the prompts! It is okay to experiment. Here is the bot commands documentation.

You can also check if kubernetes/minikube has its own contribution guidelines.

You may want to refer to our testing guide if you run into trouble with your tests not passing.

If you are having difficulty getting your pull request seen, please follow the recommended escalation practices. Also, for tips and tricks in the contribution process you may want to read the Kubernetes contributor cheat sheet. We want to make sure your contribution gets all the attention it needs!

Thank you, and welcome to Kubernetes. 😃

[k8s-ci-robot]

Hi @LaumiH. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[minikube-bot]

Can one of the admins verify this patch?

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: LaumiH
To complete the pull request process, please assign afbjorklund
You can assign the PR to them by writing /assign @afbjorklund in a comment when ready.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[LaumiH]

I did the CLA and hope it works now, otherwise I will look into it tomorrow.

[codecov-io]

Codecov Report

Merging #6038 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #6038   +/-   ##
=======================================
  Coverage   36.29%   36.29%           
=======================================
  Files         110      110           
  Lines        8235     8235           
=======================================
  Hits         2989     2989           
  Misses       4848     4848           
  Partials      398      398

[LaumiH]

Next try with the CLA, I have signed it just a couple of minutes ago.

[LaumiH]

/assign @afbjorklund

[tstromberg]

/ok-to-test

[minikube-bot]

Error: running mkcmp: exit status 1