Prima home assesment test, SRE

Pre-requisites

Docker, terraform, go installed in your local.

Create the kind cluster via Terraform

cd terraform/kind
terraform init
terraform apply
cd ../..

Add Ingress to give external visibility to the API

Nginx Ingress Controller install:

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/kind/deploy.yaml

Please wait until it is created.

Create Mysql server in k8s kind via Terraform

Have to say that easiest way to create it is directly in k8s with yaml, but Prima team considered is not IaC.

Point out that this:

• will create the k8s namespace "prima"
• the mysql server, you can see that the terraform module mysql initializes as well the database with contents.
• for simlicity I have disabled authentication to access the RDS, this can be done through k8s Secrets, using aws-external-secret controller for AWS,...
• For simplicity I have just added one env var to the API, "DBHOST"

cd terraform/mysql
terraform init
terraform apply
cd ../..

Create API app

This will create the binary for linux amd64, then the docker container and will push it to kind.

make binary
make build
kubectl apply -f ./k8s/api/ -n prima

Operation with the API

Get all users from mysql:

curl http://localhost/users

This will output:

[{"id":"1","name":"Joan Porta"},{"id":"2","name":"John McEnroe"}]

Add a user to mysql:

curl -d '{"id":"3","name":"Eva Cano"}' -H "Content-Type: application/json" -X POST http://localhost/user

This will output:

[{"id":"1","name":"Joan Porta"},{"id":"2","name":"John McEnroe"},{"id":"3","name":"Eva Cano"}]