AWS Documentation » Amazon ECS » Developer Guide » Amazon ECS Task Definitions » Using Data Volumes in Tasks » Fargate Task Storage

Fargate Task Storage

When provisioned, each Fargate task receives the following storage. Task storage is ephemeral. After a Fargate task stops, the storage is deleted.

• 10 GB of Docker layer storage

• An additional 4 GB for volume mounts. This can be mounted and shared among containers using the volumes, mountPoints and volumesFrom parameters in the task definition.

  Note

  The host and sourcePath parameters are not supported for Fargate tasks.

For more information about Amazon ECS default service limits, see Amazon ECS Service Limits.

To provide nonpersistent empty storage for containers in a Fargate task

In this example, you may have two database containers that need to access the same scratch file storage location during a task.

1. In the task definition volumes section, define a volume with the name database_scratch.

     "volumes": [
       {
         "name": "database_scratch",
         "host": {}
       }
     ]

2. In the containerDefinitions section, create the database container definitions so they mount the nonpersistent storage.

     "containerDefinitions": [
       {
         "name": "database1",
         "image": "my-repo/database",
         "cpu": 100,
         "memory": 100,
         "essential": true,
         "mountPoints": [
           {
             "sourceVolume": "database_scratch",
             "containerPath": "/var/scratch"
           }
         ]
       },
       {
         "name": "database2",
         "image": "my-repo/database",
         "cpu": 100,
         "memory": 100,
         "essential": true,
         "mountPoints": [
           {
             "sourceVolume": "database_scratch",
             "containerPath": "/var/scratch"
           }
         ]
       }
     ]