DevOps
ECS Task Definitions: Defining Your Containers
Key Parameters
- Container definitions: Image, ports, CPU/memory.
- Volumes, networking, etc.
Step 1: Create Task Definition
JSON example for our app:
{ "family": "my-task", "containerDefinitions": [ { "name": "my-container", "image": "<account-id>.dkr.ecr.us-west-2.amazonaws.com/my-app-repo:latest", "cpu": 256, "memory": 512, "portMappings": [{ "containerPort": 3000, "hostPort": 3000 }], "essential": true } ], "requiresCompatibilities": ["FARGATE"], "networkMode": "awsvpc", "cpu": "256", "memory": "512"}
Register via CLI:
aws ecs register-task-definition --cli-input-json file://task.jsonStep 2: Run a Task
Console: ECS > Clusters > my-cluster > Tasks > Run new task > Select definition.
CLI:
aws ecs run-task --cluster my-cluster --task-definition my-task --launch-type FARGATE --network-configuration "awsvpcConfiguration={subnets=[subnet-id],securityGroups=[sg-id],assignPublicIp=ENABLED}"
Check logs in console.
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