dzmitrytarasevich / aventus_exersice_1

aventus_exersice_1

!!Application was developed and tested on microk8s single-node cluster.

The repo contains 2 types of app:

• docker-compose
• helm chart

If you want to run flask app without deploying k8s cluster just run: docker-compose up -d --build

It will create postgresql and flask connected apps.

Also you can find helm chart in flask-app folder. Before running helm install you need to create namespace flask-app, github personal access token with permissions:

• admin:repo_hook,
• delete:packages,
• repo,
• write:packages

and kubernetes secret, containing that token:

k create secret docker-registry github-key --docker-server=ghcr.io --docker-username=YOUR_USERNAME --docker-password=ghp_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx --docker-email=YOUR_EMAIL -n flask-app

here: github-key - is the name of the secret YOUR_EMAIL - email you use to log in to github YOUR_USERNAME - is your username) docker-password - paste your github personal access token.

Additionally you need to download and update helm dependencies: helm dependencies update

Now you can install helm chart, containing

• flask app chart
• postgresql v16.2 helm chart
• pgadmin4 helm chart

helm install flask-app -n flask-app ./flask-app

Flask app will be accessble via http://K8S_NODE_IP:30500/

Flask endpoints available:

http://K8S_NODE_IP:30500/endpoint1

http://K8S_NODE_IP:30500/endpoint2

Those endpoints return content of postgresql tables endpoint1 and endpoint2, stored in db db_exercise_1

Postgresql credentials hardcoded into helm version but they are using env vars in docker-compsoe version:

dbname="db_exercise_1"

user="postgres"

password="postgres"

host="flask-app-postgresql" (here postgresql service's name is used).

pgadmin4 is available http://K8S_NODE_IP:PGADMIN4_SERVICE_PORT

pgadmin4 credentials:

username - [email protected]

password - devops