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Microk8s installation

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1. check if microk8s is installed
   -> microk8s status

2. check mircok8s add-ons
   -> microk8s status (look for)

       --> dashboard
       --> dns
       --> helm (heml3)
       --> hostpath-storage
       --> ingress
       --> rbac
       --> registry
       --> storage
   

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Paths

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3. create storage paths

    -> /var/lib/postgresql/data
    -> /mnt/data

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Local docker images

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4. create the frontend & restapi images locally
   -> docker-compose build

5. port the images to microk8s
   -> sudo docker save [image name] > [image name].tar
   -> sudo microk8s ctr image import [image name].tar

6. check if images are in locall registry
   -> microk8s ctr images list (look for REF)
   --> docker.io/library/frontend:latest
   --> docker.io/library/restapi:latest

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CERT-manager

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7. install cert-manager
   -> kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.11.0/cert-manager.yaml

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GCP

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8. gcp artifcat registry create/ update
   -> sudo docker tag [image-name] europe-west4-docker.pkg.dev/sc-32-376820/survey-app/[image-name]:tag

9. gcp push image
   -> docker push europe-west4-docker.pkg.dev/sc-32-376820/survey-app/[image-name]:tag

10. create gcp compatible helm chart
    -> helm package .\surveyapp-helm\

11. push compiled helm chart to gcp
    -> helm push surveyapp-helm-0.1.1.tgz oci://europe-west4-docker.pkg.dev/sc-32-376820/survey-app

12. run the helm chart
    -> helm install [release-name] oci://europe-west4-docker.pkg.dev/sc-32-376820/survey-app/surveyapp-helm --version 0.1.1

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Local helm chart

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13. run the helm chart
    -> sudo microk8s helm3 install [name] ./surveyapp-helm

14. test role based access
    -> kubectl auth can-i get pod --namespace default --as sc

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Database migration

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15. find the restapi pod name
    -> kubectl get pods (look for)
    --> restapi-deployment-[hash]

16. connect to restapi pod
    -> kubectl exec -it restapi-deployment-[hash] /bin/bash

17. migrate database to postgresql (inside pod terminal starts with #)
    -> python manage.py migrate

18. exit pod terminal
    -> Ctrl + P

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Operational

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19. check the port for the frontend
    -> kubectl get svc (look for)
    --> frontend-service (e.g., 4200:32478/TCP -> localhost:32478 is the IP)

20. open a browser

21. enter URL: localhost:[port] (e.g., localhost:32478)

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Uninstalling

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21. uninstall helm chart
    -> sudo microk8s helm3 delete $(microk8s helm3 list --short)

22. unistall specific chart
    -> helm uninstall [release-name]