Welcome to the SHASH-ANZX-APP wiki!

1. Preq sites Node 14 isnalled ( curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash - && sudo apt install nodejs && node --version && npm install && npm install express) create a new directory where all the files would live. In this directory create a package.json file that describes your app and its dependencies:
2. Then, create a main.js file that defines a web app using the Express.js framework:
3. Create a app.json file which will show the desired list output, and keep on changing it if you want the vesrion and commit to change, same will be read by nodejs code and show in output:
4. Check you application is working: curl http:///listapp http:///listapp

output:

root@shahswat:~/NJS# node main.js Example app listening at http://:::8081 { "myapplication" : { "version" : "1.0", "lastcommit" : "10082021", "description" : "pre-interview technical test" } }

5. For SCM use the GIT Hub ( Prereq having GIT instaled on local system or associated with Visual Code ) a. git clone https://github.com/ShashwatPrasad/SHASH-ANZX-APP.git ( on local station) b. When ever changes of code or file on local , update the remote GIT on Github , to be sync with local Repo. git add . git commit -m git push https://github.com/ShashwatPrasad/SHASH-ANZX-APP.git

6. create work flow file having details of action ".github/workflows/4.js.yml"

  - name: Run a multi-line script
    run: |
      npm install express
      ifconfig -a
      route -n
      node main.js &
      ps -ef | grep 'node main.js' | awk '{print $2}'
      netstat -tnlp
      sleep 10s
      netstat -tnlp
      curl http://localhost:8081/listapp
       echo Please use the https://IP:8081/lisport to get the output
      sleep 1m
      for n in $(ps -ef | grep 'node main.js' | awk 'NR==1 {print $2}'); do echo "######## killing $n########"; ps -ef | grep $n && kill -9 $n && ps -ef | grep $n ; done

7. Execte the worflow and check the results:

sample output: { "myapplication" : { "version" : "1.0", "lastcommit" : "10082021", "description" : "pre-interview technical test" } }

a. Create an empty file called Dockerfile: ( open port , cmd to execute , req package/library installation) b. docker build . -t shashwat/anzx-demo c. docker images docker run -p 49155:8081 -d shashwat/anzx-demo d. docker exec -it /bin/bash e. curl -i localhost 49155/listapp f. docker ps g. docker stop

output:

root@shahswat:~/NJS/SHASH-ANZX-APP# curl -i localhost:49155/listapp HTTP/1.1 200 OK X-Powered-By: Express Date: Wed, 11 Aug 2021 07:03:34 GMT Connection: keep-alive Keep-Alive: timeout=5 Content-Length: 142

{ "myapplication" : { "version" : "1.0", "lastcommit" : "10082021", "description" : "pre-interview technical test" } } root@shahswat:~/NJS/SHASH-ANZX-APP# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 7a4c4a13b781 shash/anzx-test-app "docker-entrypoint.s…" 3 minutes ago Up 3 minutes 0.0.0.0:49155->8081/tcp, :::49155->8081/tcp

Export the image to external repo ( Azure Container Repo) ( file size less than 25 MB wil be uploaded on Git Hub ) in this case we have 350MB of image file.

docker save -o /root/NJS/SHASH-ANZX-APP/anzx-test-app.tar shash/anzx-test-app

10. docker tag shash/anzx-test-app shashwatprasad.azurecr.io/anzx-test-app
11. docker login shashwatprasad.azurecr.io --username ShashwatPrasad --password xxxxx
12. docker push shashwatprasad.azurecr.io/anzx-test-app

az account set --subscription XXXXXX ( to access K8 using Bash CLI) az aks get-credentials --resource-group sh1 --name shashwatk8 ( to access K8 using Bash CLI)

az aks update -n shashwatk8 -g sh1 --attach-acr ShashwatPrasad ( attach K8 with Container repo)

kubectl create namespace ( create namespace) create anzx-test.yaml for deployment ( having detais of namespace,limits, ports and image)

output:

kubectl get pods --namespace=anzx-test NAME READY STATUS RESTARTS AGE anzx-test-app-6868559b9c-m8k5p 1/1 Running 0 3m7s

shashwat_prasad@Azure:~$ kubectl describe pod --namespace=anzx-test Name: anzx-test-app-6868559b9c-m8k5p Namespace: anzx-test Priority: 0 Node: aks-agentpool-32317397-vmss000000/10.240.0.4 Start Time: Wed, 11 Aug 2021 14:04:35 +0000 Labels: app=anzx-test-app pod-template-hash=6868559b9c Annotations: Status: Running IP: 10.244.0.9 IPs: IP: 10.244.0.9 Controlled By: ReplicaSet/anzx-test-app-6868559b9c Containers: anzx-test-app: Container ID: containerd://901f9ea2b74d41f2c422b64955776579bf71e2eeb23c419a9e1f910d94c3373f Image: shashwatprasad.azurecr.io/anzx-test-app:latest Image ID: shashwatprasad.azurecr.io/anzx-test-app@sha256:260bbc46ff21f2042a4e096a4c79bfb709f7a17f8514c2921f60f2dd97cbad26 Port: 49155/TCP Host Port: 0/TCP State: Running Started: Wed, 11 Aug 2021 14:04:37 +0000 Ready: True Restart Count: 0 Limits: cpu: 250m memory: 256Mi Requests: cpu: 100m memory: 128Mi Environment: ALLOW_EMPTY_PASSWORD: yes Mounts: /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-stlnb (ro) Conditions: Type Status Initialized True Ready True ContainersReady True PodScheduled True Volumes: kube-api-access-stlnb: Type: Projected (a volume that contains injected data from multiple sources) TokenExpirationSeconds: 3607 ConfigMapName: kube-root-ca.crt ConfigMapOptional: DownwardAPI: true QoS Class: Burstable Node-Selectors: kubernetes.io/os=linux Tolerations: node.kubernetes.io/memory-pressure:NoSchedule op=Exists node.kubernetes.io/not-ready:NoExecute op=Exists for 300s node.kubernetes.io/unreachable:NoExecute op=Exists for 300s Events: Type Reason Age From Message

Normal Scheduled 8m19s default-scheduler Successfully assigned anzx-test/anzx-test-app-6868559b9c-m8k5p to aks-agentpool-32317397-vmss000000 Normal Pulling 8m18s kubelet Pulling image "shashwatprasad.azurecr.io/anzx-test-app:latest" Normal Pulled 8m17s kubelet Successfully pulled image "shashwatprasad.azurecr.io/anzx-test-app:latest" in 1.229014873s Normal Created 8m17s kubelet Created container anzx-test-app Normal Started 8m17s kubelet Started container anzx-test-app