# Amazon ECS task definition template
<a name="task-definition-template"></a>

An empty task definition template is shown as follows. You can use this template to create your task definition, which can then be pasted into the console JSON input area or saved to a file and used with the AWS CLI `--cli-input-json` option. For more information, see [Amazon ECS task definition parameters for Fargate](task_definition_parameters.md).

**EC2 template**

```
{
  "family": "",
  "taskRoleArn": "",
  "executionRoleArn": "",
  "networkMode": "none",
  "containerDefinitions": [
    {
      "name": "",
      "image": "",
      "repositoryCredentials": {
        "credentialsParameter": ""
      },
      "cpu": 0,
      "memory": 0,
      "memoryReservation": 0,
      "links": [""],
      "portMappings": [
        {
          "containerPort": 0,
          "hostPort": 0,
          "protocol": "tcp"
        }
      ],
      "restartPolicy": {
        "enabled": true,
        "ignoredExitCodes": [0],
        "restartAttemptPeriod": 180
      },
      "essential": true,
      "entryPoint": [""],
      "command": [""],
      "environment": [
        {
          "name": "",
          "value": ""
        }
      ],
      "environmentFiles": [
        {
          "value": "",
          "type": "s3"
        }
      ],
      "mountPoints": [
        {
          "sourceVolume": "",
          "containerPath": "",
          "readOnly": true
        }
      ],
      "volumesFrom": [
        {
          "sourceContainer": "",
          "readOnly": true
        }
      ],
      "linuxParameters": {
        "capabilities": {
          "add": [""],
          "drop": [""]
        },
        "devices": [
          {
            "hostPath": "",
            "containerPath": "",
            "permissions": ["read"]
          }
        ],
        "initProcessEnabled": true,
        "sharedMemorySize": 0,
        "tmpfs": [
          {
            "containerPath": "",
            "size": 0,
            "mountOptions": [""]
          }
        ],
        "maxSwap": 0,
        "swappiness": 0
      },
      "secrets": [
        {
          "name": "",
          "valueFrom": ""
        }
      ],
      "dependsOn": [
        {
          "containerName": "",
          "condition": "COMPLETE"
        }
      ],
      "startTimeout": 0,
      "stopTimeout": 0,
      "hostname": "",
      "user": "",
      "workingDirectory": "",
      "disableNetworking": true,
      "privileged": true,
      "readonlyRootFilesystem": true,
      "dnsServers": [""],
      "dnsSearchDomains": [""],
      "extraHosts": [
        {
          "hostname": "",
          "ipAddress": ""
        }
      ],
      "dockerSecurityOptions": [""],
      "interactive": true,
      "pseudoTerminal": true,
      "dockerLabels": {
        "KeyName": ""
      },
      "ulimits": [
        {
          "name": "nofile",
          "softLimit": 0,
          "hardLimit": 0
        }
      ],
      "logConfiguration": {
        "logDriver": "splunk",
        "options": {
          "KeyName": ""
        },
        "secretOptions": [
          {
            "name": "",
            "valueFrom": ""
          }
        ]
      },
      "healthCheck": {
        "command": [""],
        "interval": 0,
        "timeout": 0,
        "retries": 0,
        "startPeriod": 0
      },
      "systemControls": [
        {
          "namespace": "",
          "value": ""
        }
      ],
      "resourceRequirements": [
        {
          "value": "",
          "type": "InferenceAccelerator"
        }
      ],
      "firelensConfiguration": {
        "type": "fluentbit",
        "options": {
          "KeyName": ""
        }
      }
    }
  ],
  "volumes": [
    {
      "name": "",
      "host": {
        "sourcePath": ""
      },
      "configuredAtLaunch": true,
      "dockerVolumeConfiguration": {
        "scope": "shared",
        "autoprovision": true,
        "driver": "",
        "driverOpts": {
          "KeyName": ""
        },
        "labels": {
          "KeyName": ""
        }
      },
      "efsVolumeConfiguration": {
        "fileSystemId": "",
        "rootDirectory": "",
        "transitEncryption": "DISABLED",
        "transitEncryptionPort": 0,
        "authorizationConfig": {
          "accessPointId": "",
          "iam": "ENABLED"
        }
      },
      "fsxWindowsFileServerVolumeConfiguration": {
        "fileSystemId": "",
        "rootDirectory": "",
        "authorizationConfig": {
          "credentialsParameter": "",
          "domain": ""
        }
      }
    }
  ],
  "placementConstraints": [
    {
      "type": "memberOf",
      "expression": ""
    }
  ],
  "requiresCompatibilities": ["EC2"],
  "cpu": "",
  "memory": "",
  "tags": [
    {
      "key": "",
      "value": ""
    }
  ],
  "pidMode": "task",
  "ipcMode": "task",
  "proxyConfiguration": {
    "type": "APPMESH",
    "containerName": "",
    "properties": [
      {
        "name": "",
        "value": ""
      }
    ]
  },
  "inferenceAccelerators": [
    {
      "deviceName": "",
      "deviceType": ""
    }
  ],
  "ephemeralStorage": {
    "sizeInGiB": 0
  },
  "runtimePlatform": {
    "cpuArchitecture": "X86_64",
    "operatingSystemFamily": "WINDOWS_SERVER_20H2_CORE"
  }
}
```

**Fargate template**

**Important**  
 For Fargate, you must include the `operatingSystemFamily` parameter with one of the following values:  
`LINUX`
`WINDOWS_SERVER_2019_FULL`
`WINDOWS_SERVER_2019_CORE`
`WINDOWS_SERVER_2022_FULL`
`WINDOWS_SERVER_2022_CORE`

```
{
    "family": "",
    "runtimePlatform": {"operatingSystemFamily": ""},
    "taskRoleArn": "",
    "executionRoleArn": "",
    "networkMode": "awsvpc",
    "platformFamily": "",
    "containerDefinitions": [
        {
            "name": "",
            "image": "",
            "repositoryCredentials": {"credentialsParameter": ""},
            "cpu": 0,
            "memory": 0,
            "memoryReservation": 0,
            "links": [""],
            "portMappings": [
                {
                    "containerPort": 0,
                    "hostPort": 0,
                    "protocol": "tcp"
                }
            ],
            "essential": true,
            "entryPoint": [""],
            "command": [""],
            "environment": [
                {
                    "name": "",
                    "value": ""
                }
            ],
            "environmentFiles": [
                {
                    "value": "",
                    "type": "s3"
                }
            ],
            "mountPoints": [
                {
                    "sourceVolume": "",
                    "containerPath": "",
                    "readOnly": true
                }
            ],
            "volumesFrom": [
                {
                    "sourceContainer": "",
                    "readOnly": true
                }
            ],
            "linuxParameters": {
                "capabilities": {
                    "add": [""],
                    "drop": [""]
                },
                "devices": [
                    {
                        "hostPath": "",
                        "containerPath": "",
                        "permissions": ["read"]
                    }
                ],
                "initProcessEnabled": true,
                "sharedMemorySize": 0,
                "tmpfs": [
                    {
                        "containerPath": "",
                        "size": 0,
                        "mountOptions": [""]
                    }
                ],
                "maxSwap": 0,
                "swappiness": 0
            },
            "secrets": [
                {
                    "name": "",
                    "valueFrom": ""
                }
            ],
            "dependsOn": [
                {
                    "containerName": "",
                    "condition": "HEALTHY"
                }
            ],
            "startTimeout": 0,
            "stopTimeout": 0,
            "hostname": "",
            "user": "",
            "workingDirectory": "",
            "disableNetworking": true,
            "privileged": true,
            "readonlyRootFilesystem": true,
            "dnsServers": [""],
            "dnsSearchDomains": [""],
            "extraHosts": [
                {
                    "hostname": "",
                    "ipAddress": ""
                }
            ],
            "dockerSecurityOptions": [""],
            "interactive": true,
            "pseudoTerminal": true,
            "dockerLabels": {"KeyName": ""},
            "ulimits": [
                {
                    "name": "msgqueue",
                    "softLimit": 0,
                    "hardLimit": 0
                }
            ],
            "logConfiguration": {
                "logDriver": "awslogs",
                "options": {"KeyName": ""},
                "secretOptions": [
                    {
                        "name": "",
                        "valueFrom": ""
                    }
                ]
            },
            "healthCheck": {
                "command": [""],
                "interval": 0,
                "timeout": 0,
                "retries": 0,
                "startPeriod": 0
            },
            "systemControls": [
                {
                    "namespace": "",
                    "value": ""
                }
            ],
            "resourceRequirements": [
                {
                    "value": "",
                    "type": "GPU"
                }
            ],
            "firelensConfiguration": {
                "type": "fluentd",
                "options": {"KeyName": ""}
            }
        }
    ],
    "volumes": [
        {
            "name": "",
            "host": {"sourcePath": ""},
            "configuredAtLaunch":true,
            "dockerVolumeConfiguration": {
                "scope": "task",
                "autoprovision": true,
                "driver": "",
                "driverOpts": {"KeyName": ""},
                "labels": {"KeyName": ""}
            },
            "efsVolumeConfiguration": {
                "fileSystemId": "",
                "rootDirectory": "",
                "transitEncryption": "ENABLED",
                "transitEncryptionPort": 0,
                "authorizationConfig": {
                    "accessPointId": "",
                    "iam": "ENABLED"
                }
            }
        }
    ],
    "requiresCompatibilities": ["FARGATE"],
    "cpu": "",
    "memory": "",
    "tags": [
        {
            "key": "",
            "value": ""
        }
    ],
    "ephemeralStorage": {"sizeInGiB": 0},
    "pidMode": "task",
    "ipcMode": "none",
    "proxyConfiguration": {
        "type": "APPMESH",
        "containerName": "",
        "properties": [
            {
                "name": "",
                "value": ""
            }
        ]
    },
    "inferenceAccelerators": [
        {
            "deviceName": "",
            "deviceType": ""
        }
    ]
}
```

You can generate this task definition template using the following AWS CLI command.

```
aws ecs register-task-definition --generate-cli-skeleton
```