You want to run a highly available web application using ECS. How should you design your ECS cluster to ensure availability if one EC2 instance fails?

hard📝 Application Q8 of 15

AWS - ECS and Fargate

AUse a single large EC2 instance with all resources

BRun all tasks on Fargate to avoid EC2 instances

CRegister multiple EC2 instances in different Availability Zones to the cluster

DCreate multiple clusters in the same Availability Zone

Step-by-Step Solution

Solution:

Step 1: Understand high availability requirements
Distributing EC2 instances across Availability Zones prevents single point of failure.
Step 2: Evaluate options
Single large instance risks failure impact. Fargate avoids EC2 but may increase cost and complexity. Multiple clusters in one AZ do not protect against AZ failure.
Final Answer:
Register multiple EC2 instances in different Availability Zones to the cluster -> Option C
Quick Check:
Multi-AZ EC2 instances improve availability [OK]

Quick Trick: Spread instances across AZs for availability [OK]

Common Mistakes:

Using single instance
Ignoring AZ distribution
Confusing clusters with AZs

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More AWS Quizzes

You want to run a highly available web application using ECS. How should you design your ECS cluster to ensure availability if one EC2 instance fails?

Step 1: Understand high availability requirements

Step 2: Evaluate options

Final Answer:

Quick Check:

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