CodePipeline with GitHub

Seamless CI/CD Integration: Using GitHub, CodePipeline, and CodeDeploy for Automated EC2 Deployments

Automate EC2 Instance Setup: Installing Ruby and CodeDeploy Using User Data

Using IAM Roles to Enable EC2 Instances for AWS CodeDeploy

Grant Permissions: Allow EC2 instances to interact with AWS CodeDeploy.
Secure Access: Use IAM roles to manage permissions securely without embedding credentials in instances.
Enable Automated Deployments: Ensure EC2 instances can perform deployment tasks and access required resources.
Simplify Management: Streamline the management of permissions across multiple instances and deployments.

User Data Script for EC2: Install Ruby and CodeDeploy Agent

Update Package Index: Ensure the latest package information is available.
Install Ruby: Required for running CodeDeploy agent scripts.
Install wget: Necessary for downloading the CodeDeploy agent installer.
Download and Install CodeDeploy Agent: Retrieve and install the CodeDeploy agent.
Start CodeDeploy Agent: Begin the agent service to enable deployments.

2. AWS CodeDeploy Application and Deployment Group

CodeDeploy Application

Organize Deployments: Centralize management of application deployments across various environments.
Track Deployment History: Maintain records of deployment activities for audit and troubleshooting purposes.
Automate Updates: Streamline the deployment process to reduce manual intervention and improve efficiency.
Enable Rollback: Facilitate easy rollback to previous versions in case of deployment issues or failures.

Deployment Group

Target Specific Instances: Define a set of EC2 instances to deploy your application based on tags or other criteria.
Manage Deployment Strategies: Choose deployment methods like in-place or blue/green to control how updates are applied.
Control Rollbacks: Set up automatic rollback options to revert changes if the deployment encounters issues.
Enable Load Balancer Integration: Optionally configure load balancer settings for blue/green deployments to manage traffic between old and new instances.

3. CodePipeline with CodeDeploy for Automated EC2 Deployments

Source

Retrieve Code: Fetch the application code from a source repository (e.g., GitHub, Amazon S3).
Trigger Pipelines: Automatically trigger pipeline execution when code changes are detected.
Define Source Location: Specify the branch or path where the code resides for continuous integration.
Ensure Consistency: Ensure that the pipeline always uses the latest version of the code for deployments.

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Deploy

Deploy Application: Automate the transfer of built code to EC2 instances using AWS CodeDeploy.
Manage Deployment Strategies: Utilize CodeDeploy to implement deployment methods like in-place or blue/green for controlled updates.
Facilitate Rollbacks: Enable automatic rollback via CodeDeploy if deployment issues are detected, ensuring application stability.
Streamline Deployment Process: Integrate seamlessly with CodeDeploy to handle complex deployment tasks and automate updates across instances.

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