Manual Docker Deployment to EC2

Manual deployment on EC2

• Create a new repository in docker hub to push your images.
• In the code directory

$ docker build -t <USERNAME/REPOSITORY-NAME:TAG> .
$ docker push <USERNAME/REPOSITORY-NAME:TAG>

• SSH into the EC2 instance, and run the following commands

$ sudo nano /etc/environment

# Paste the following:  
#  
# LC_ALL="en_US.UTF-8"  
# LC_CTYPE="en_US.UTF-8"  
  
$ sudo reboot  
$ sudo yum update -y  
$ sudo amazon-linux-extras install docker  
$ sudo service docker start  
$ sudo docker run -d --rm -p 80:80 <USERNAME/REPOSITORY-NAME:TAG>
# the app is now running on the instance on port 80  

• Open the EC2 instance to accept http requests from the world
  • Go to the instances page
  • Check your instance
  • Scroll down and select the Security tab which is beside the
    Details (default selected) tab.
  • Click the top most security group.
  • Select the Inbound Rules tab and click edit.
  • Add new, and set type to Http rule and set source to Anywhere and then save.
  • Go to the instances table again and for your instance, either copy the
    Public IPv4 DNS value or the Public IPv4 address value and test your app on that
    URL.

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This approach is not bad and certainly one can use this. But, keep in mind that by doing this, we need to manage the security, scaling and
many other things too. I am not an expert in DevOps and if you are not too, then believe me, it is very easy to mis-configure this which might lead to excess costs and/or someone might just abuse our service.

There are other Manages Services provided by AWS like the AWS ECS with AWS Fargate and the second one is the AWS EKS. These two have a lot of configuration options and discussing about them in a single blog is a bit challenging. I will try to write a blog about them sometime in the future that will at least help you get started with
them. Meanwhile, you can visit Containers on AWS to learn more about them.

I hope you liked the post and feel free to share your thoughts in the comments section below.