chore(experiment): Add pod network duplication experiment in generic experiments of LitmusChaos

[uditgaurav]

Signed-off-by: Udit Gaurav udit.gaurav@mayadata.io

This PR contains:

• Addition a pod network duplication experiment in the generic experiment of litmus. Litmus already has a number of pod level network chaos experiments like pod network latency, loss, corruption. This will help to increase the coverage of network experiments.
• The experiment should be in go, so the PR will go to the litmus-go repository. This experiment uses netem command to generate a network duplication same as pod network latency and others.
• This issue will track the addition of the experiment. This experiment will be supported for the docker runtime environment only as of now, support for others will be added soon.

Issues:

• fixes: Add Pod Network Duplication Experiment in Generic Experiments of Litmus litmus#1585

Note For Reviewer:

[uditgaurav]

• Logs:

Pod Network Duplication

W0622 19:09:50.291206 1 client_config.go:541] Neither --kubeconfig nor --master was specified. Using the inClusterConfig. This might not work. time="2020-06-22T19:09:50Z" level=info msg="[PreReq]: Getting the ENV for the experiment" time="2020-06-22T19:09:50Z" level=info msg="[PreReq]: Updating the chaos result of pod-network-duplication experiment (SOT)" time="2020-06-22T19:09:50Z" level=info msg="The application informations are as follows\n" Ramp Time=0 Namespace=default Label="run=nginx" time="2020-06-22T19:09:50Z" level=info msg="[Status]: Verify that the AUT (Application Under Test) is running (pre-chaos)" time="2020-06-22T19:09:50Z" level=info msg="[Status]: Checking whether application pods are in running state" time="2020-06-22T19:09:50Z" level=info msg="The running status of Pods are as follows" Pod=nginx-7db9fccd9b-jv85q Status=Running time="2020-06-22T19:09:50Z" level=info msg="The running status of Pods are as follows" Pod=nginx-7db9fccd9b-wxpzv Status=Running time="2020-06-22T19:09:50Z" level=info msg="The running status of Pods are as follows" Status=Running Pod=nginx-7db9fccd9b-xmz77 time="2020-06-22T19:09:50Z" level=info msg="[Status]: Checking whether application containers are in running state" time="2020-06-22T19:09:50Z" level=info msg="The running status of container are as follows" container=nginx Pod=nginx-7db9fccd9b-jv85q Status=Running time="2020-06-22T19:09:50Z" level=info msg="The running status of container are as follows" Status=Running container=nginx Pod=nginx-7db9fccd9b-wxpzv time="2020-06-22T19:09:50Z" level=info msg="The running status of container are as follows" Status=Running container=nginx Pod=nginx-7db9fccd9b-xmz77 time="2020-06-22T19:09:50Z" level=info msg="[Prepare]: Application pod name under chaos: nginx-7db9fccd9b-jv85q" time="2020-06-22T19:09:50Z" level=info msg="[Prepare]: Application node name: gke-cluster-1-default-pool-8774fd9c-v4br" time="2020-06-22T19:09:50Z" level=info msg="[Prepare]: Target container name: nginx" time="2020-06-22T19:09:50Z" level=info msg="[Status]: Checking the status of the helper pod" time="2020-06-22T19:09:50Z" level=info msg="[Status]: Checking whether application pods are in running state" time="2020-06-22T19:09:54Z" level=info msg="The running status of Pods are as follows" Pod=pumba-netem-vbyjby Status=Running time="2020-06-22T19:09:54Z" level=info msg="[Status]: Checking whether application containers are in running state" time="2020-06-22T19:09:54Z" level=info msg="The running status of container are as follows" container=pumba Pod=pumba-netem-vbyjby Status=Running time="2020-06-22T19:09:54Z" level=info msg="[Wait]: waiting till the completion of the helper pod" time="2020-06-22T19:09:54Z" level=info msg="helper pod status: Running" time="2020-06-22T19:09:55Z" level=info msg="helper pod status: Running" time="2020-06-22T19:09:56Z" level=info msg="helper pod status: Running" time="2020-06-22T19:09:57Z" level=info msg="helper pod status: Running" time="2020-06-22T19:09:58Z" level=info msg="helper pod status: Running" time="2020-06-22T19:09:59Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:00Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:01Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:02Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:03Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:04Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:05Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:06Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:07Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:08Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:09Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:10Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:11Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:12Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:13Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:14Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:15Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:16Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:17Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:18Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:19Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:20Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:21Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:22Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:23Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:24Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:25Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:26Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:27Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:28Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:29Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:30Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:31Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:32Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:33Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:34Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:35Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:36Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:37Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:38Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:39Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:40Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:41Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:42Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:43Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:44Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:45Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:46Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:47Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:48Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:49Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:50Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:51Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:52Z" level=info msg="helper pod status: Running" time="2020-06-22T19:10:53Z" level=info msg="helper pod status: Succeeded" time="2020-06-22T19:10:53Z" level=info msg="The running status of Pods are as follows" Pod=pumba-netem-vbyjby Status=Succeeded time="2020-06-22T19:10:53Z" level=info msg="[Cleanup]: Deleting the helper pod" time="2020-06-22T19:10:53Z" level=info msg="[Confirmation]: The app pod network duplication" time="2020-06-22T19:10:53Z" level=info msg="[Status]: Verify that the AUT (Application Under Test) is running (post-chaos)" time="2020-06-22T19:10:53Z" level=info msg="[Status]: Checking whether application pods are in running state" time="2020-06-22T19:10:53Z" level=info msg="The running status of Pods are as follows" Pod=nginx-7db9fccd9b-jv85q Status=Running time="2020-06-22T19:10:53Z" level=info msg="The running status of Pods are as follows" Pod=nginx-7db9fccd9b-wxpzv Status=Running time="2020-06-22T19:10:53Z" level=info msg="The running status of Pods are as follows" Pod=nginx-7db9fccd9b-xmz77 Status=Running time="2020-06-22T19:10:53Z" level=info msg="[Status]: Checking whether application containers are in running state" time="2020-06-22T19:10:53Z" level=info msg="The running status of container are as follows" container=nginx Pod=nginx-7db9fccd9b-jv85q Status=Running time="2020-06-22T19:10:53Z" level=info msg="The running status of container are as follows" container=nginx Pod=nginx-7db9fccd9b-wxpzv Status=Running time="2020-06-22T19:10:53Z" level=info msg="The running status of container are as follows" container=nginx Pod=nginx-7db9fccd9b-xmz77 Status=Running time="2020-06-22T19:10:53Z" level=info msg="[The End]: Updating the chaos result of pod-network-duplication experiment (EOT)"

[ksatchit]

Please resolve conflicts based on previous merge.

[uditgaurav]

Pod Network Duplication with Packet Duplication of 100%

Pod Network Duplication with Packet Duplication of 50%