# DaemonContainerDefinition A container definition for a daemon task. Daemon container definitions describe the containers that run as part of a daemon task on container instances managed by capacity providers. ## Contents ** image ** The image used to start the container. This string is passed directly to the Docker daemon. Images in the Docker Hub registry are available by default. Other repositories are specified with either ` repository-url/image:tag ` or ` repository-url/image@digest `. Type: String Required: Yes ** command ** The command that's passed to the container. Type: Array of strings Required: No ** cpu ** The number of `cpu` units reserved for the container. Type: Integer Required: No ** dependsOn ** The dependencies defined for container startup and shutdown. A container can contain multiple dependencies on other containers in a task definition. Type: Array of [ContainerDependency](API_ContainerDependency.md) objects Required: No ** entryPoint ** The entry point that's passed to the container. Type: Array of strings Required: No ** environment ** The environment variables to pass to a container. Type: Array of [KeyValuePair](API_KeyValuePair.md) objects Required: No ** environmentFiles ** A list of files containing the environment variables to pass to a container. Type: Array of [EnvironmentFile](API_EnvironmentFile.md) objects Required: No ** essential ** If the `essential` parameter of a container is marked as `true`, and that container fails or stops for any reason, all other containers that are part of the task are stopped. Type: Boolean Required: No ** firelensConfiguration ** The FireLens configuration for the container. This is used to specify and configure a log router for container logs. Type: [FirelensConfiguration](API_FirelensConfiguration.md) object Required: No ** healthCheck ** The container health check command and associated configuration parameters for the container. Type: [HealthCheck](API_HealthCheck.md) object Required: No ** interactive ** When this parameter is `true`, you can deploy containerized applications that require `stdin` or a `tty` to be allocated. Type: Boolean Required: No ** linuxParameters ** Linux-specific modifications that are applied to the container configuration, such as Linux kernel capabilities. Type: [DaemonLinuxParameters](API_DaemonLinuxParameters.md) object Required: No ** logConfiguration ** The log configuration specification for the container. Type: [LogConfiguration](API_LogConfiguration.md) object Required: No ** memory ** The amount (in MiB) of memory to present to the container. If the container attempts to exceed the memory specified here, the container is killed. Type: Integer Required: No ** memoryReservation ** The soft limit (in MiB) of memory to reserve for the container. Type: Integer Required: No ** mountPoints ** The mount points for data volumes in your container. Type: Array of [MountPoint](API_MountPoint.md) objects Required: No ** name ** The name of the container. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. Type: String Required: No ** privileged ** When this parameter is true, the container is given elevated privileges on the host container instance (similar to the `root` user). Type: Boolean Required: No ** pseudoTerminal ** When this parameter is `true`, a TTY is allocated. Type: Boolean Required: No ** readonlyRootFilesystem ** When this parameter is true, the container is given read-only access to its root file system. Type: Boolean Required: No ** repositoryCredentials ** The private repository authentication credentials to use. Type: [RepositoryCredentials](API_RepositoryCredentials.md) object Required: No ** restartPolicy ** The restart policy for the container. When you set up a restart policy, Amazon ECS can restart the container without needing to replace the task. Type: [ContainerRestartPolicy](API_ContainerRestartPolicy.md) object Required: No ** secrets ** The secrets to pass to the container. Type: Array of [Secret](API_Secret.md) objects Required: No ** startTimeout ** Time duration (in seconds) to wait before giving up on resolving dependencies for a container. Type: Integer Required: No ** stopTimeout ** Time duration (in seconds) to wait before the container is forcefully killed if it doesn't exit normally on its own. Type: Integer Required: No ** systemControls ** A list of namespaced kernel parameters to set in the container. Type: Array of [SystemControl](API_SystemControl.md) objects Required: No ** ulimits ** A list of `ulimits` to set in the container. Type: Array of [Ulimit](API_Ulimit.md) objects Required: No ** user ** The user to use inside the container. Type: String Required: No ** workingDirectory ** The working directory to run commands inside the container in. Type: String Required: No ## See Also For more information about using this API in one of the language-specific Amazon SDKs, see the following: + [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ecs-2014-11-13/DaemonContainerDefinition) + [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ecs-2014-11-13/DaemonContainerDefinition) + [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ecs-2014-11-13/DaemonContainerDefinition)