CICD for deploying MongoDB cluster

Step by step guide for deploying MongoDB cluster with CICD on your machine

Tools

• Docker
• Ansible
• Git (Gitlab)
• Jenkins

How to Setup environments

Prerequisites

• Download required version of MongoDB rpms and store it under src/mongo/<<version>>
• Create rootCA and node certificates with openssl and store it under src/certs/<<version>>

Docker

1. Install docker for desktop

2. Create a external docker network with bridge driver:

   $ docker network create mongonetwork
   

3. Create external volumes for gitlab & jenkins:

   $ docker volume create jenkins_home
   $ docker volume create gitlab_config
   $ docker volume create gitlab_logs
   $ docker volume create gitlab_data
   

4. Build centos:base & jenkins images from respective docker files:

   $ docker build -t centos:base -f Dockerfiles/centos-base.Dockerfile .
   $ docker build -t jenkins:latest -f Dockerfiles/jenkins.Dockerfile .
   

5. Start the containers with docker-compose:

   $ docker-compose up
   

6. Start other required services:

   $ ./start_services.bat
   

Gitlab

1. Setup gitlab root password on first time
2. Setup a gitlab project
3. Download and push the ansibleplaybooks section

Jenkins

1. Setup a jenkins project
2. Enable webhook from gitlab