February 14, 2019 / Eternal Team
Deploy Docker Container to the AWS Fargate Cluster
AWS Fargate was launched a few months back. This is a service that runs docker containers serverless, as per individual needs. AWS Fargate is a compute engine for Amazon ECS, allows you to run Docker containers without having to manage servers or clusters. With AWS Fargate, there is no need to scale, provision, or configure clusters of virtual machines to run containers. You don’t have to choose server types and how are they communicating together. You just have to focus on building and designing an application instead of managing the infrastructure that helps to run the application.
First of all, to understand the Container, we need to understand the difference between the Virtual machine and the Container technology.
What’s the Difference Between Containers and Virtual Machines?
The difference is all about how the application uses underlying hardware like RAM and CPUs efficiently. Containerization reduces waste of underlying hardware because each container only holds the application and related binaries or libraries. Containerization is a lightweight alternative to full machine virtualization that involves encapsulating an application in a container with its own operating environment. By allowing more containers in the environment without the need for more servers, containe]rization increases scalability anywhere from 10 to 100 times that of traditional VM environments.
After this little understanding of what is Container, Now the AWS Container management service which called Elastic Container Service (ECS) comes in the picture.
Elastic Container Service (ECS) Amazon Elastic Container Service (Amazon ECS) is a highly scalable, high-performance container orchestration service that supports Docker containers and allows you to easily run and scale containerized applications on AWS. You can host your cluster on a serverless infrastructure that is managed by Amazon ECS, by launching your services or tasks using the Fargate launch type. For more control, you can host your tasks on a cluster of Amazon Elastic Compute Cloud (Amazon EC2) instances that you manage by using the EC2 launch type.
Fargate Launch Type AWS Fargate is a technology that you can use with Amazon ECS to run containers without having to manage servers or clusters of Amazon EC2 instances. With AWS Fargate, you no longer have to provision, configure, or scale clusters of virtual machines to run containers. This removes the need to choose server types, decide when to scale your clusters, or optimize cluster packing.
Flow chart of Fargate type Deployment
We can understand more about the fargate type clustering and deployment by following architecture. Fargate makes the dedicated and separate Elastic Network Interface for the single fargate task (Container). So every single container runs with its own security groups, ports, desired subnets and VPS. The fargate container have all the facilities which we get in EC2 instances. Additionally, Fargate allows Load balancing and autoscaling for the containers where we do not need to worry about any failure or downtime. It also allows blue-green auto deployment on the containers.
Benefits of Amazon Fargate
1) No Cluster management
With Fargate, you just have to think of containers and focus on building and operating your app. It eliminates the need for managing a cluster of Amazon EC2 Instances.
2) Seamless Scaling
It is possible in fargate, we can scale the size of any container or number of container in few clicks and within few minutes. Fargate allows you to launch thousands of containers together in seconds and easily scale to run your mission-critical applications.
3) Addressing Security
This is true that in fargate launch type we can not access the running container directly. So to deploy new version, we need to create new and run the new container by replacing old container.
5) Lower down the Costs
AWS Fargate not only manages the infrastructure but lower downs the overall application costs too. This charges us for what we have used. In the fargate container, we can set up the auto scaling which reduces the cost when traffic is not much, for example in the night time (When we talk about EC2 instance hosting). However, it is your responsibility to make sure that containers are densely packed onto instances to get maximum benefits out of them, otherwise, it will be merely a waste of money.
6) Reduces Complexity
Everybody knows that Kubernetes is the winner of the container orchestration market but you will realize that it is hard to scale or manage Kubernetes effectively. Realizing these challenges, Amazon released Fargate service where customers don’t have to worry about containers. Just define the parameters for containers and Fargate takes care of everything rest.
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