Setting Up Seamless CI/CD with GitLab CI and AWS

Continuous Integration (CI) and Continuous Deployment (CD) are integral practices in modern software development, ensuring that code is consistently tested, built, and deployed. GitLab CI, coupled with the powerful cloud infrastructure of AWS (Amazon Web Services), provides a robust platform for automating these processes. In this guide, we will walk through the steps to set up a seamless CI/CD pipeline using GitLab CI and AWS.


  1. GitLab Account: Ensure you have a GitLab account and a repository for your project.
  2. AWS Account: Set up an AWS account and obtain necessary credentials.

Setting Up GitLab CI:

  1. Create a .gitlab-ci.yml File:
    In the root of your GitLab repository, create a .gitlab-ci.yml file. This file defines the CI/CD pipeline stages, jobs, and scripts.
     - build
     - test
     - deploy

     - apt-get update -qy
     - apt-get install -y python3-pip
     - pip3 install awscli

       - echo "Building your application"

       - echo "Running tests"

       - aws s3 sync ./your-deployment-directory s3://your-s3-bucket
  1. Configure GitLab Runner:
    GitLab Runners execute the jobs defined in your .gitlab-ci.yml file. You can use shared or specific runners depending on your needs. Install and register a runner following the instructions in the GitLab documentation.

Setting Up AWS for Deployment:

  1. Create an S3 Bucket:
    In the AWS Management Console, create an S3 bucket to store your deployment artifacts. Ensure the bucket name is unique and set appropriate permissions.
  2. Configure AWS Credentials:
    Set up AWS credentials on your GitLab CI/CD environment. This can be achieved by adding AWS Access Key ID and Secret Access Key as environment variables in your GitLab CI/CD settings.

Setting Up Deployment Script:

  1. Install AWS CLI in CI/CD Environment:
    In the .gitlab-ci.yml file, install the AWS CLI as part of the before_script section.
  2. Define Deployment Script:
    Modify the deployment stage in .gitlab-ci.yml to include the necessary AWS CLI commands for deploying your application to AWS.
       - aws configure set aws_access_key_id $AWS_ACCESS_KEY_ID
       - aws configure set aws_secret_access_key $AWS_SECRET_ACCESS_KEY
       - aws s3 sync ./your-deployment-directory s3://your-s3-bucket
  1. Secure AWS Credentials:
    Utilize GitLab CI/CD environment variables to securely store AWS credentials. Avoid hardcoding sensitive information in your scripts.


By integrating GitLab CI with AWS, you’ve established a robust CI/CD pipeline for your project. Commits to your GitLab repository will trigger automated builds, tests, and deployments, ensuring a smooth and efficient development process. This setup lays the foundation for scalable and reliable software delivery, fostering collaboration and accelerating your release cycles.

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