AWS Code Deploy to EC2

Code deploy to EC2 instance using Code deploy Agent

Let’s start first by creating 2 IAM roles we will use in this tutorial:‌

• IAM role for CodeDeploy to talk to EC2 instances.

• IAM role for EC2 to access S3.

1 — CodeDeployRole‌

Go to AWS IAM Console then navigate to “Roles“, choose “Create New Role“, Select “CodeDeploy” and attach “AWSCodeDeployRole” policy:​‌

2 — EC2S3Role‌

Create another IAM role, but this time choose EC2 as the trusted entity. Then, attach “AmazonS3ReadOnlyAccess” policy:​‌

Now that we’ve created an IAM roles, let’s launch an EC2 instance which will be used by CodeDeploy to deploy our application.‌

3 — EC2 Instance‌

Launch a new EC2 instance with the IAM role we created in last section:​ and add proper tag on EC2 instance.

Next to User Data type the following script to install the AWS CodeDeploy Agent at boot time:Plain Text exit: ⌘↩

#!/bin/sh
 yum update
 yum install -y ruby
 cd /home/ec2-user
 aws s3 cp s3://aws-codedeploy-us-west-1/latest/install .
 chmod +x ./install
 ./install auto

Note: make sure to allow HTTP traffic in the security group.​‌

Once created, connect to the instance using the Public IP via SSH, and verify whether the CodeDeploy agent is running:​‌

4 — Application‌

Add the appspec.yml file to the application to describe to AWS CodeDeploy how to manage the lifecycle of your application:Plain Text exit: ⌘↩

‌version: 0.0
os: linux
files:
  - source: /
    destination: /home/ec2-user/api
permissions:
  - object: /
    pattern: "**"
    owner: ec2-user
    group: ec2-user
hooks:
  AfterInstall:
    - location: deploy/before_install.sh
      timeout: 1200
      runas: ec2-user
  ApplicationStart:
    - location: deploy/restart.sh
      timeout: 60
      runas: ec2-user
ValidateService:
    - location: deploy/validate.sh
      timeout: 60
      runas: ec2-user

Branch - travis-ci-codedeploy-ec2

GitHub - tkssharma/DevOpsTraining: DevOpsTrainingGitHub

Now Lets build Pipeline Step by Step

1. Create Pipeline and name it as Code-deploy-ec2-node and ass source provider as Github

Add Build Stage Next after setting up Source Repository with Branch, From here create new Build Project

Add Build configuration with default build spec file which says just copy node JS code to Artifacts

finally add this build as a Stage to Pipeline

Add deployment PROVIDER as code deploy and Configure application and return back to same screen (Create code deploy application and deployment group )

Code deploy application

Crate code deploy application and code deploy group

Code deploy can push code to EC2 instance so lets spin up EC2 instance having S3 read only access role

In User data we can add installation commands to add code deploy agent to EC2 instance as startup script

Define Tag for EC2 instance so these EC2 instance can be provided as Target for Code deploy stage

Create Deployment Group

Once Code deployment created add Code deploy to our pipeline Last step

Now Our Pipeline has ben setup with Code Build and Code deploy to push Node JS Code TO ec2 instance

Trigger a dummy Commit to run pipeline

Here we see everything worked as expected and we are able to see application deployed on EC2 instance