Applifting DevOps Task

These resources will create a 3 manager node Docker Swarm, deploy Traefik, Gitlab, Gitlab Runner and whoami services. With resources under kong-deployment, you can spin up Kong with PostgreSQL, and have it configured with purpose built Docker image.

Prerequisites

• Debian-based system is presumed
• Your SSH key being authorized on the hosts

ssh-copy-id -i ~/.ssh/id_rsa user@host

Step-by-step

1. Run the playbook

ansible-playbook -K -i ansible/applifting-inventory.yml ansible/main.yml

3. Create two Docker secrets

printf <password> | docker secret create gitlab_root_password -

printf <anotherpassword> | docker secret create kong_postgres_password -

3. Deploy the stack with Traefik, Gitlab, Gitlab Runner and whoami

docker stack deploy -c applifting-deployment/applifting-stack.yml applifting

4. Deploy the stack with Kong and whoami

docker stack deploy -c kong-deployment/kong-stack.yml kong

5. If run for first time, run Kong configuration image when kong_kong service is running

docker run --network=kong_kong-net michalkozakgd/applifting-devops-task:8b864d8a

6. Register Gitlab Runner

# Find where is Runner deployed
docker service ps applifting_gitlab-runner

# Exec into it on the correct node
docker exec -it <container_id> gitlab-runner register

Used Gitlab CI/CD build variables

• KONG_CONSUMER_PASSWORD for /whoami basic-auth
• KONG_PG_PASSWORD for Kong PostgreSQL password
• SSH_PRIVATE_KEY for SSH key to connect to the Docker Swarm

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Ansible Docker Swarm role is forked from Jobin James.