e c s

Question 1

ECS
(Elastic Container Service)

Answer 1

A fully managed container orchestration service for running and managing Docker containers on AWS.

Question 2

What are the two options for infrastructure to run ECS on?

Answer 2

1. serverless (fargate)
2. managed (ec2)

Question 3

what is a container in ECS?

Answer 3

A lightweight, standalone executable package of software that includes everything needed to run it: code, runtime, system tools, libraries, and settings.

Question 4

what is an ECS task?

Answer 4

A single instance of a running container or a group of containers that define how a containerized application should be deployed.

Question 5

what is an ECS service?

Answer 5

A long-running ECS task that can be managed, scaled, and monitored, ensuring the desired number of tasks are always running

Question 6

What is an ECS Cluster?

Answer 6

A logical grouping of EC2 instances or Fargate resources where containers are run.

Question 7

What is a Task Definition?

Answer 7

A blueprint that describes how a Docker container should be run, including its image, CPU, memory, port mappings, and environment variables.

Question 8

What does the EC2 launch type in ECS offer?

Answer 8

More control over the underlying infrastructure with managed clusters of EC2 instances for running containers.

Question 9

What AWS service can be used with ECS for secure container networking?

Answer 9

Amazon VPC (Virtual Private Cloud).

Question 10

How does ECS manage access control?

Answer 10

Through AWS IAM (Identity and Access Management) roles and policies.

Question 11

Which AWS service is commonly used with ECS for load balancing?

Answer 11

Elastic Load Balancing (ELB), including ALB (Application Load Balancer) for HTTP/HTTPS traffic.

Question 12

Which AWS service integrates with ECS for secrets management?

Answer 12

AWS Secrets Manager or AWS Systems Manager Parameter Store for managing sensitive data.

Question 13

What is Amazon ECR?

Answer 13

A fully managed container image registry service that allows you to store, manage, and deploy Docker container images.

Question 14

How does ECR integrate with ECS?

Answer 14

ECR stores container images that ECS pulls to deploy and run tasks.

Question 15

Where do you specify the container image in ECS?

Answer 15

In the ECS task definition, where you provide the URI of the container image in ECR.

Question 16

How does ECR handle image versioning?

Answer 16

ECR supports image tagging, allowing you to manage different versions of container images (e.g., :latest, :v1.0.1).

Question 17

What is the benefit of tagging images in ECR?

Answer 17

Tagging helps manage and update specific image versions in ECS task definitions for smooth deployments and rollbacks.

Question 18

How do ECS tasks access ECR?

Answer 18

ECS tasks assume IAM roles with permissions to access specific ECR repositories, ensuring only authorized tasks can retrieve images.