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AWS ECS Containers

⬢ 層級 2技術
高
薪資影響
8 個月
學習時長
中等
難度
2
職業
一覽

AWS ECS runs Docker containers on EC2 or Fargate. You define task definitions (CPU, memory, container image), create services (how many tasks to run), and ECS handles scheduling, updates, and scaling. Fargate (serverless) eliminates EC2 management; EC2 (classic) requires less overhead but more ops. Mastery means understanding task definitions, service updates (rolling deployments), load balancing, auto-scaling, and cost optimization. Learning path: Docker basics (2 weeks) → ECS fundamentals (2 weeks) → Fargate (2 weeks) → production patterns (2 weeks).

什麼是 AWS ECS Containers

AWS ECS (Elastic Container Service) runs Docker containers at scale. You create a task definition (container image, CPU, memory, environment), then run tasks (individual container instances) or services (persistent tasks with auto-scaling and updates). Two launch types:

🔧 工具與生態
AWS ECS ConsoleAWS FargateEC2 Container Registry (ECR)DockerECS CLICloudFormationApplication Load BalancerAuto ScalingCloudWatch

💰 各地區薪資

地區初級中級高級
USA$85,000$135,000$185,000
UK£50,000£80,000£120,000
EU€55,000€85,000€130,000
CANADACA$90,000CA$140,000CA$190,000

🎯 使用 AWS ECS Containers 的職業

Cloud Architect
Devops Engineer

❓ 常見問題

Should I use ECS or Kubernetes (EKS)?
ECS: simpler, AWS-native, less overhead. EKS: standard Kubernetes, multi-cloud, larger community. Use ECS if you're AWS-only; EKS if you want portability.
What's the difference between EC2 launch type and Fargate?
EC2: you manage EC2 instances, ECS schedules containers on them. Fargate: serverless, AWS manages infrastructure, you pay per container. Fargate simpler, EC2 cheaper at scale.
How do I deploy updates without downtime?
Use rolling deployments (ECS default). ECS terminates old task, starts new task, checks health, repeats. Combined with ALB health checks = zero downtime.
Can I use ECS for databases?
Technically yes, but not recommended. ECS is stateless. For stateful services (databases), use RDS or DynamoDB.
How do I scale ECS services?
Target tracking scaling. Example: scale out when CPU >70%, scale in when <30%. ECS Auto Scaling manages it automatically.
Can I use private Docker registries with ECS?
Yes, ECR (AWS Docker registry), Docker Hub, Quay. ECS supports all. Credentials stored in Secrets Manager.
Is ECS suitable for production?
Yes, millions of containers run on ECS. Caveats: Fargate has some limitations (no GPU, limited network options); EC2 requires ops skill.

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