Deploy Docker Images to Amazon EC2 with Jenkins

Configure SSH Connection

• Generate SSH Key within the Jenkins server:

$ ssh-keygen -t rsa

Output
Generating public/private rsa key pair.
Enter file in which to save the key (/home/demo/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/demo/.ssh/id_rsa.
Your public key has been saved in /home/demo/.ssh/id_rsa.pub.
The key fingerprint is:
4a:dd:0a:c6:35:4e:3f:ed:27:38:8c:74:44:4d:93:67 demo@a
The key's randomart image is:
+--[ RSA 2048]----+
|          .oo.   |
|         .  o.E  |
|        + .  o   |
|     . = = .     |
|      = S = .    |
|     o + = +     |
|      . o + o .  |
|           . o   |
|                 |
+-----------------+

• Copy your public key:  cat id_rsa.pub
• Connect to your Amazon EC2 instance and append the content of your public key to end of file in a new line: nano ~/.ssh/authorized_keys
• Now you can verify that Jenkins can connect to Amazon instance: ssh USER@REMOTE_ADDR

Prepare a build script

Commit the build script to your code repository:

echo "Starting to deploy docker image.."
DOCKER_IMAGE=turkogluc/spring-jenkins-demo
docker pull $DOCKER_IMAGE
docker ps -q --filter ancestor=$DOCKER_IMAGE | xargs -r docker stop
docker run -d -p 8080:8080 $DOCKER_IMAGE

So it pulls the latest image from docker artifactory, stops the container if it is already working and runs it with latest version.

Add deploy stage to Jenkins

pipeline {
    agent any

    triggers{
        bitbucketPush()
    }

    stages {
		stage ("build") {
        	steps {
            	// build and publish docker image
            }
        }
    }

    stage ('Deploy') {
        steps {
            sh 'scp deploy.sh ${REMOTE_USER}@${REMOTE_HOST}:~/'
            sh 'ssh ${REMOTE_USER}@${REMOTE_HOST} "chmod +x deploy.sh"'
            sh 'ssh ${REMOTE_USER}@${REMOTE_HOST} ./deploy.ssh'
        }
    }
}

If you would like to have Continues Delivery pipeline separately, you can add docker artifactory trigger with CloudBees Docker Hub/Registry Notification from Manage Jenkins -> Manage Plugins -> Available.

You can add webhooks to docker hub as follows:

and set the build trigger: