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**To register a task definition with a JSON file** This example registers a task definition to the specified family with container definitions that are saved in JSON format at the specified file location. Command:: aws ecs register-task-definition --cli-input-json file://<path_to_json_file>/sleep360.json JSON file format:: { "containerDefinitions": [ { "name": "sleep", "image": "busybox", "cpu": 10, "command": [ "sleep", "360" ], "memory": 10, "essential": true } ], "family": "sleep360" } Output:: { "taskDefinition": { "volumes": [], "taskDefinitionArn": "arn:aws:ecs:us-east-1:<aws_account_id>:task-definition/sleep360:19", "containerDefinitions": [ { "environment": [], "name": "sleep", "mountPoints": [], "image": "busybox", "cpu": 10, "portMappings": [], "command": [ "sleep", "360" ], "memory": 10, "essential": true, "volumesFrom": [] } ], "family": "sleep360", "revision": 1 } } **To register a task definition with a JSON string** This example registers a the same task definition from the previous example, but the container definitions are in a string format with the double quotes escaped. Command:: aws ecs register-task-definition --family sleep360 --container-definitions "[{\"name\":\"sleep\",\"image\":\"busybox\",\"cpu\":10,\"command\":[\"sleep\",\"360\"],\"memory\":10,\"essential\":true}]" **To use data volumes in a task definition** This example task definition creates a data volume called `webdata` that exists at `/ecs/webdata` on the container instance. The volume is mounted read-only as `/usr/share/nginx/html` on the `web` container, and read-write as `/nginx/` on the `timer` container. Task Definition:: { "family": "web-timer", "containerDefinitions": [ { "name": "web", "image": "nginx", "cpu": 99, "memory": 100, "portMappings": [{ "containerPort": 80, "hostPort": 80 }], "essential": true, "mountPoints": [{ "sourceVolume": "webdata", "containerPath": "/usr/share/nginx/html", "readOnly": true }] }, { "name": "timer", "image": "busybox", "cpu": 10, "memory": 20, "entryPoint": ["sh", "-c"], "command": ["while true; do date > /nginx/index.html; sleep 1; done"], "mountPoints": [{ "sourceVolume": "webdata", "containerPath": "/nginx/" }] }], "volumes": [{ "name": "webdata", "host": { "sourcePath": "/ecs/webdata" }} ] }
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