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TODOS

➜ Create a single node OKD cluster with minishift (some experiments require multi node)

➜ Deploy the Demo Microservice and Install Litmus

➜ Run Experiments and Observe

Requirements

Note: I am using this demo microservice

Create OKD cluster with minishift

  1. Run minishift start command

    minishift start
#if you run into errors skip startup checks
minishift config set skip-startup-checks true

  2. Display path needed for oc binary

    minishift oc-env
#add output path to PATH environment variable
eval $(minishift oc-env)
#admin loging 
oc login -u system:admin

  3. minishift start outputs info to connect to the web console. Follow the prompt to get to the web dashboard Note: OKD prompts you to create a project, these projects act as clusters/namespaces in Kubernetes. Create a new project in the dashboard named okd-cluster

Deploy Demo Microservice and Install Litmus

  1. In the terminal set the context to the project you created

    oc project okd-cluster

  2. Deploy the microservice to the cluster

    oc apply -f gcp-microservice.yaml
#check status
oc get pods -n okd-cluster

  3. Access web frontend with external ip

     oc port-forward deployment/frontend 8080:8080

  4. Deploy Litmus ChaosOperator

    oc apply -f https://litmuschaos.github.io/litmus/litmus-operator-v1.9.0.yaml

  5. Install Litmus Experiments

    curl -sL https://github.com/litmuschaos/chaos-charts/archive/1.9.0.tar.gz -o litmus.tar.gz
tar -zxvf litmus.tar.gz
rm litmus.tar.gz
find chaos-charts-1.9.0 -name experiments.yaml | grep generic | xargs oc apply -n okd-cluster -f

  6. Create Service Account

    oc create -f rbac.yaml

Run experiments and observe

  1. Delete any existing Chaos engines in the namespace

    oc delete chaosengine okd-chaos -n okd-cluster

  2. Run the experiment and watch

    oc create -f litmus/pod-delete.yaml -n okd-cluster

oc get pods -n okd-cluster --watch

  3. Observe Results (Takes a few seconds for command to turnover, results initially in await state)

    oc describe chaosengine okd-chaos -n okd-cluster

oc describe chaosresult okd-chaos-pod-delete -n okd-cluster

#to save results to file: 
oc describe chaosengine okd-chaos -n okd-cluster > litmus-results/chaosengine-pod-delete.txt

oc describe chaosresult okd-chaos-pod-delete -n okd-cluster > litmus-results/chaosresult-pod-delete.txt

  4. Uninstall and clean up

    oc delete -f https://litmuschaos.github.io/litmus/litmus-operator-v1.9.0.yaml

oc delete chaosengine --all -n okd-cluster

oc delete chaosengine --all -n litmus

oc delete namespaces okd-cluster

minishift stop

minishift delete