Hands on Kube Workshop

Prerequisite

• Please make sure you have access to this link with github auth Argo CD (if you have any issues ask Devops for help)
• Install Kubectl CLI
• Make sure you have access to this repository (https://github.com/ironsource-mobile/apps-helm-charts-platform)

Were going to cover all following :

• Understand Argo->GitOPS->Helm circle
• Update Charts Tags
• Create Health Check
• Create Livness Check
• Create a New Pod at the same namespace
• Connect To Other Pods
• Kubectl inside PODS
• Inject environment Veraibls
• Inject Config map

Intro:

Understand Argo->GitOPS->Helm circle

Project File Structure

apps-helm-charts-platform
├── ...
├── ua-workshop       
│   ├── Chart.yaml          # a definition of all services under same project 
│   ├── dev-01.yaml         # environment specific configuration for example (docker image tag,config maps etc...)
│   └── values.yaml         # environment values , veraible docker image livness probes etc..
└── ...   

forther reading about devops arcithecture can be find here : Base-APP

Step 0 - Create a new UAT environment with your name

• UAT - Create Workshop Env
• click Run workflow
• At Environment insert workshop-${your name} (for exmaple: workshop-naor)
• After job finish you will get 4 urls:

{
  "details":"UAT Environment have been created successfully",
  "status":200,
  "apps-helm-chart-branch":"https://github.com/ironsource-mobile/apps-helm-charts-platform/tree/uat-workshop-naor","service-registry-branch":"https://github.com/ironsource-mobile/service-registry/tree/uat-workshop-naor",
  "argocd-apps":"https://argocd-apps.infra-lb.ua-dev.us-east-1.ironsrc.mobi/applications/uat-workshop-naor"
}
200
api url http://ua-workshop.uat-platform.ua-dev.us-east-1.ironsrc.mobi/

* API url - UI for your app  
* Argo-CD managment for your current env
* Github branch for `service-registry` repository
* Github branch for `apps-helm-chart` repository

Before starting:

• all your changes should be made at you apps-helm-chart branch /apps-helm-charts-platform/values/ua/demand-platform/ua-workshop
• don't push your branch to master
• afetr each commit refresh the environment in argo cd and the UI at the browser

Step 1 - Change Port to correct one and check UI is working

• i accedently map the service PORT to wrong internal port 3324 at values.yaml our server need to run on port 5400 please update the service internal port
• commit and push your chages and update argo if everything works fine you should see a website at your ENV-UI

Step 2 - Change Image tag to correct one

• i accedently create the workshop with the wrong image tag (not-working) please update the tag to latest https://hub.docker.com/repository/docker/naortedgi/workshop/tags?page=1&ordering=last_updated
• commit and push your chages and update argo
• if everything works fine you should see new website at your ENV-UI

Step 3 - please add an health check to your workshop POD

• the pod expose an health check end point /health
• use it to configure the health check at values.yaml file
• if you need help check apps-helm-charts-platform/values/ua/demand-platform/platform-js/values.yaml for reference Note change port and URL according to environment

  livenessProbe:
    enabled: true
    failureThreshold: 5
    initialDelaySeconds: 60
    periodSeconds: 5
    successThreshold: 1
    timeoutSeconds: 5
    mode: httpGet
    httpGet:
      port: 3000
      path: /test/version
  readinessProbe:
    enabled: true
    failureThreshold: 5
    initialDelaySeconds: 60
    periodSeconds: 5
    successThreshold: 1
    timeoutSeconds: 5
    mode: httpGet
    httpGet:
      port: 3000
      path: /test/version

• make sure your health check pinging more than 5 times
• if you set it right it will reflect on the ui

Step 4 - inject config map

• please inject a new config map file to the following POD path: /usr/local/app/config/setup.json the new file needs to be

  {
      "appName": "YOUR_NAME"
  }
  

• learn from examples you got plannty here /apps-helm-charts-platform/values/ua/demand-platform/platform-js/dev-01.yaml
• if you set it right it will reflect on the ui

 volumes:
    config-volume-development:
      mountPath: /usr/local/app/config/setup.json
      subPath: setup.json
      volumeSpec:
        configMap:
          name: ua-workshop-workshop
          items:
            - key: setup.json
              path: setup.json
  configmaps:
    workshop:
      raw_data:
        setup.json: |
          {
            "appName": "Neo"
          }

Step 5 - create a new POD from scratch

follow this guide https://github.com/ntedgi/kube-argocd-helm-workshop/blob/main/Create-POD.MD

Step 6 - inject environment veraible

open shell into the pod just like docker exec read SECRET.txt there you will find the host name for friend pod and instruction on how to add new env veraible to service the command you need is :

aws eks update-kubeconfig --region us-east-1 --name platform-dev-01

kubectl -n <NAME-SPACE> exec -it <POD> sh

• you can find your namsepace name by pressing the pod

Step 7 - interact with pods on same namespace

• our server need to send request to other POD at the same environment
• add new environment veraible with the FRIEND_HOST with the uri for the friend host and : http://.../test/version
• what is the host name of pods under the same namespace?

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