A big retail company A has various web/non-web services to support its routine companywide operations.
The applications are using various EC2 instance types such as Amazon Linux EC2, Ubuntu EC2 and Windows Server 2016
There are also several on-premise linux Redhat servers.
The DevOps team has used AWS service for 3 years and is considering to explore ECS service on these applications.
Click on the arrows to vote for the correct answer
A. B. C. D.Correct Answer - C.
The Amazon ECS container agent allows container instances to connect to your cluster.
The Amazon ECS container agent is included in the Amazon ECS-optimized AMIs, but you can also install it on any Amazon EC2 instance that supports the Amazon ECS specification.
One thing to note is that the Amazon ECS container agent is only supported on Amazon EC2 instances.
The source code for the Amazon ECS container agent is available on GitHub.
It has listed the details on how to install/configure agent in linux and windows.
Some details also refer to https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ECS_agent.html.
Option A is incorrect because Windows EC2 instance can install the agent as well.
Option B is incorrect because on-premise instances cannot install the agent.
The ECS service only works for EC2 instances.
Option D is incorrect because although it is true that the Amazon ECS container agent is included in the Amazon ECS-optimized AMIs, you can also install it on other EC2 instances.
Amazon Elastic Container Service (ECS) is a container orchestration service offered by AWS to deploy, manage and scale Docker containers. It allows developers to build and run containerized applications on a cluster of EC2 instances, providing benefits such as improved scalability, availability, and reduced infrastructure costs.
In the given scenario, the DevOps team is considering exploring ECS for their applications running on various EC2 instances and on-premise servers. To determine whether ECS can be used on these instances, we need to consider the requirements for installing the ECS agent.
The ECS agent is responsible for managing the lifecycle of Docker containers on EC2 instances in an ECS cluster. It needs to be installed on each EC2 instance that runs Docker containers and will be part of the ECS cluster. Here are the installation requirements for the ECS agent:
Based on the above requirements, we can eliminate options A, B, and D as they do not accurately describe the installation requirements for the ECS agent.
Option C correctly states that the ECS agent can be installed on Amazon Linux, Ubuntu, and Windows Server EC2 instances, but cannot be installed on on-premise Redhat servers. Therefore, the correct answer is option C.
However, it is important to note that installing the ECS agent on an EC2 instance does not automatically make it part of an ECS cluster. To use ECS, you also need to create an ECS cluster, configure task definitions, and deploy your containers using ECS services. Additionally, not all EC2 instances are suitable for running ECS tasks. For example, t2.micro instances have limited resources and may not be able to run some containerized applications. It is important to carefully evaluate the suitability of each EC2 instance for running ECS tasks before using ECS for your applications.