Interview_challenge

This is my answer to the interview. Python Django is used to implement the API. A Python slim container will serve the API query. Every query is recorded in PostgreSQL container.

This is the purpose of each sub-directory under project directory:

• Chart
  Helm Chart templates and values
• django
  Python Django code to implement the API
• docker-compose.yml
  Docker Compose YAML
• Dockerfile
  Container definition
• requirements.txt
  Python venv requirements.txt
• venv
  Python venv
• .gitlab-ci.yml
  Gitlab CI YAML

How to install:

Please run this to install Helm Chart in Kubernetes:

helm install myweb-release Chart

A pod will be created with two containers (web & db).

patrick@minikube:~$ minikube kubectl -- get pods
NAME                               READY   STATUS    RESTARTS      AGE
myweb-deployment-db58d64fd-bz8lc   2/2     Running   1 (42m ago)   42m

Two services will be created.

patrick@minikube:~$ minikube kubectl -- get services
NAME                        TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
db                          ClusterIP   10.99.76.32      <none>        5432/TCP         43m
kubernetes                  ClusterIP   10.96.0.1        <none>        443/TCP          46h
myweb-release-web-service   NodePort    10.100.193.125   <none>        3000:30000/TCP   43m

How to test:

Root endpoint

patrick@minikube:~$ curl http://192.168.49.2:30000/
{"version": "0.1.0", "date": 1708634337, "kubernetes": true}

Domain query

patrick@minikube:~$ curl http://192.168.49.2:30000/v1/tools/lookup/?domain=www.yahoo.com
{"ip_address":"87.248.114.12"}

patrick@minikube:~$ curl http://192.168.49.2:30000/v1/tools/lookup/?domain=www.cisco.com
{"ip_address":"2.22.69.207"}

Validate IP

patrick@minikube:~$ curl http://192.168.49.2:30000/v1/tools/validate/?ip_address=192.168.1.1
{"valid":true}

patrick@minikube:~$ curl http://192.168.49.2:30000/v1/tools/validate/?ip_address=1.2.3.A
{"valid":false}

History

patrick@minikube:~$ curl -s http://192.168.49.2:30000/v1/history/ | jq .
[
  {
    "id": 3,
    "domain": "www.cisco.com",
    "ip_address": "173.222.10.60",
    "created_at": "2024-02-22T20:38:49.154850Z"
  },
  {
    "id": 2,
    "domain": "www.cisco.com",
    "ip_address": "2.22.69.207",
    "created_at": "2024-02-22T20:38:03.859364Z"
  },
  {
    "id": 1,
    "domain": "www.cisco.com",
    "ip_address": "2.22.69.207",
    "created_at": "2024-02-22T20:16:35.314428Z"
  }
]