@Generated(value="software.amazon.awssdk:codegen") public final class ContainerDefinition extends Object implements SdkPojo, Serializable, ToCopyableBuilder<ContainerDefinition.Builder,ContainerDefinition>
Container definitions are used in task definitions to describe the different containers that are launched as part of a task.
| Modifier and Type | Class and Description |
|---|---|
static interface |
ContainerDefinition.Builder |
| Modifier and Type | Method and Description |
|---|---|
static ContainerDefinition.Builder |
builder() |
List<String> |
command()
The command that is passed to the container.
|
Integer |
cpu()
The number of
cpu units reserved for the container. |
List<ContainerDependency> |
dependsOn()
The dependencies defined for container startup and shutdown.
|
Boolean |
disableNetworking()
When this parameter is true, networking is disabled within the container.
|
List<String> |
dnsSearchDomains()
A list of DNS search domains that are presented to the container.
|
List<String> |
dnsServers()
A list of DNS servers that are presented to the container.
|
Map<String,String> |
dockerLabels()
A key/value map of labels to add to the container.
|
List<String> |
dockerSecurityOptions()
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems.
|
List<String> |
entryPoint()
|
List<KeyValuePair> |
environment()
The environment variables to pass to a container.
|
List<EnvironmentFile> |
environmentFiles()
A list of files containing the environment variables to pass to a container.
|
boolean |
equals(Object obj) |
boolean |
equalsBySdkFields(Object obj) |
Boolean |
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. |
List<HostEntry> |
extraHosts()
A list of hostnames and IP address mappings to append to the
/etc/hosts file on the container. |
FirelensConfiguration |
firelensConfiguration()
The FireLens configuration for the container.
|
<T> Optional<T> |
getValueForField(String fieldName,
Class<T> clazz) |
boolean |
hasCommand()
Returns true if the Command property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasDependsOn()
Returns true if the DependsOn property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasDnsSearchDomains()
Returns true if the DnsSearchDomains property was specified by the sender (it may be empty), or false if the
sender did not specify the value (it will be empty).
|
boolean |
hasDnsServers()
Returns true if the DnsServers property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasDockerLabels()
Returns true if the DockerLabels property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
boolean |
hasDockerSecurityOptions()
Returns true if the DockerSecurityOptions property was specified by the sender (it may be empty), or false if the
sender did not specify the value (it will be empty).
|
boolean |
hasEntryPoint()
Returns true if the EntryPoint property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasEnvironment()
Returns true if the Environment property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
boolean |
hasEnvironmentFiles()
Returns true if the EnvironmentFiles property was specified by the sender (it may be empty), or false if the
sender did not specify the value (it will be empty).
|
boolean |
hasExtraHosts()
Returns true if the ExtraHosts property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
int |
hashCode() |
boolean |
hasLinks()
Returns true if the Links property was specified by the sender (it may be empty), or false if the sender did not
specify the value (it will be empty).
|
boolean |
hasMountPoints()
Returns true if the MountPoints property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
boolean |
hasPortMappings()
Returns true if the PortMappings property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
boolean |
hasResourceRequirements()
Returns true if the ResourceRequirements property was specified by the sender (it may be empty), or false if the
sender did not specify the value (it will be empty).
|
boolean |
hasSecrets()
Returns true if the Secrets property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasSystemControls()
Returns true if the SystemControls property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
boolean |
hasUlimits()
Returns true if the Ulimits property was specified by the sender (it may be empty), or false if the sender did
not specify the value (it will be empty).
|
boolean |
hasVolumesFrom()
Returns true if the VolumesFrom property was specified by the sender (it may be empty), or false if the sender
did not specify the value (it will be empty).
|
HealthCheck |
healthCheck()
The container health check command and associated configuration parameters for the container.
|
String |
hostname()
The hostname to use for your container.
|
String |
image()
The image used to start a container.
|
Boolean |
interactive()
When this parameter is
true, this allows you to deploy containerized applications that require
stdin or a tty to be allocated. |
List<String> |
links()
The
links parameter allows containers to communicate with each other without the need for port
mappings. |
LinuxParameters |
linuxParameters()
Linux-specific modifications that are applied to the container, such as Linux kernel capabilities.
|
LogConfiguration |
logConfiguration()
The log configuration specification for the container.
|
Integer |
memory()
The amount (in MiB) of memory to present to the container.
|
Integer |
memoryReservation()
The soft limit (in MiB) of memory to reserve for the container.
|
List<MountPoint> |
mountPoints()
The mount points for data volumes in your container.
|
String |
name()
The name of a container.
|
List<PortMapping> |
portMappings()
The list of port mappings for the container.
|
Boolean |
privileged()
When this parameter is true, the container is given elevated privileges on the host container instance (similar
to the
root user). |
Boolean |
pseudoTerminal()
When this parameter is
true, a TTY is allocated. |
Boolean |
readonlyRootFilesystem()
When this parameter is true, the container is given read-only access to its root file system.
|
RepositoryCredentials |
repositoryCredentials()
The private repository authentication credentials to use.
|
List<ResourceRequirement> |
resourceRequirements()
The type and amount of a resource to assign to a container.
|
List<SdkField<?>> |
sdkFields() |
List<Secret> |
secrets()
The secrets to pass to the container.
|
static Class<? extends ContainerDefinition.Builder> |
serializableBuilderClass() |
Integer |
startTimeout()
Time duration (in seconds) to wait before giving up on resolving dependencies for a container.
|
Integer |
stopTimeout()
Time duration (in seconds) to wait before the container is forcefully killed if it doesn't exit normally on its
own.
|
List<SystemControl> |
systemControls()
A list of namespaced kernel parameters to set in the container.
|
ContainerDefinition.Builder |
toBuilder() |
String |
toString()
Returns a string representation of this object.
|
List<Ulimit> |
ulimits()
A list of
ulimits to set in the container. |
String |
user()
The user to use inside the container.
|
List<VolumeFrom> |
volumesFrom()
Data volumes to mount from another container.
|
String |
workingDirectory()
The working directory in which to run commands inside the container.
|
clone, finalize, getClass, notify, notifyAll, wait, wait, waitcopypublic final String name()
The name of a container. If you are linking multiple containers together in a task definition, the
name of one container can be entered in the links of another container to connect the
containers. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. This
parameter maps to name in the Create a container section of the
Docker Remote API and the --name option to
docker run.
name of one container can be entered in the links of another container to
connect the containers. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens
are allowed. This parameter maps to name in the Create a container section
of the Docker Remote API and the
--name option to docker run.public final String image()
The image used to start a 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 . Up to 255 letters (uppercase and lowercase),
numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are allowed. This parameter
maps to Image in the Create a container section of the
Docker Remote API and the IMAGE parameter of
docker run.
When a new task starts, the Amazon ECS container agent pulls the latest version of the specified image and tag for the container to use. However, subsequent updates to a repository image are not propagated to already running tasks.
Images in Amazon ECR repositories can be specified by either using the full registry/repository:tag
or registry/repository@digest. For example,
012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or
012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE
.
Images in official repositories on Docker Hub use a single name (for example, ubuntu or
mongo).
Images in other repositories on Docker Hub are qualified with an organization name (for example,
amazon/amazon-ecs-agent).
Images in other online repositories are qualified further by a domain name (for example,
quay.io/assemblyline/ubuntu).
repository-url/image:tag or
repository-url/image@digest . Up to 255 letters (uppercase and
lowercase), numbers, hyphens, underscores, colons, periods, forward slashes, and number signs are
allowed. This parameter maps to Image in the Create a container section
of the Docker Remote API and the
IMAGE parameter of docker run.
When a new task starts, the Amazon ECS container agent pulls the latest version of the specified image and tag for the container to use. However, subsequent updates to a repository image are not propagated to already running tasks.
Images in Amazon ECR repositories can be specified by either using the full
registry/repository:tag or registry/repository@digest. For example,
012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>:latest or
012345678910.dkr.ecr.<region-name>.amazonaws.com/<repository-name>@sha256:94afd1f2e64d908bc90dbca0035a5b567EXAMPLE
.
Images in official repositories on Docker Hub use a single name (for example, ubuntu or
mongo).
Images in other repositories on Docker Hub are qualified with an organization name (for example,
amazon/amazon-ecs-agent).
Images in other online repositories are qualified further by a domain name (for example,
quay.io/assemblyline/ubuntu).
public final RepositoryCredentials repositoryCredentials()
The private repository authentication credentials to use.
public final Integer cpu()
The number of cpu units reserved for the container. This parameter maps to CpuShares in
the Create a container section
of the Docker Remote API and the
--cpu-shares option to docker run.
This field is optional for tasks using the Fargate launch type, and the only requirement is that the total amount
of CPU reserved for all containers within a task be lower than the task-level cpu value.
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
Linux containers share unallocated CPU units with other containers on the container instance with the same ratio as their allocated amount. For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
On Linux container instances, the Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2. However, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to two CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
On Windows container instances, the CPU limit is enforced as an absolute limit, or a quota. Windows containers
only have access to the specified amount of CPU that is described in the task definition. A null or zero CPU
value is passed to Docker as 0, which Windows interprets as 1% of one CPU.
cpu units reserved for the container. This parameter maps to
CpuShares in the Create a container section
of the Docker Remote API and the
--cpu-shares option to docker run.
This field is optional for tasks using the Fargate launch type, and the only requirement is that the
total amount of CPU reserved for all containers within a task be lower than the task-level
cpu value.
You can determine the number of CPU units that are available per EC2 instance type by multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page by 1,024.
Linux containers share unallocated CPU units with other containers on the container instance with the same ratio as their allocated amount. For example, if you run a single-container task on a single-core instance type with 512 CPU units specified for that container, and that is the only task running on the container instance, that container could use the full 1,024 CPU unit share at any given time. However, if you launched another copy of the same task on that container instance, each task would be guaranteed a minimum of 512 CPU units when needed, and each container could float to higher CPU usage if the other container was not using it, but if both tasks were 100% active all of the time, they would be limited to 512 CPU units.
On Linux container instances, the Docker daemon on the container instance uses the CPU value to calculate the relative CPU share ratios for running containers. For more information, see CPU share constraint in the Docker documentation. The minimum valid CPU share value that the Linux kernel allows is 2. However, the CPU parameter is not required, and you can use CPU values below 2 in your container definitions. For CPU values below 2 (including null), the behavior varies based on your Amazon ECS container agent version:
Agent versions less than or equal to 1.1.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts to 1,024 CPU shares. CPU values of 1 are passed to Docker as 1, which the Linux kernel converts to two CPU shares.
Agent versions greater than or equal to 1.2.0: Null, zero, and CPU values of 1 are passed to Docker as 2.
On Windows container instances, the CPU limit is enforced as an absolute limit, or a quota. Windows
containers only have access to the specified amount of CPU that is described in the task definition. A
null or zero CPU value is passed to Docker as 0, which Windows interprets as 1% of one CPU.
public final Integer memory()
The amount (in MiB) of memory to present to the container. If your container attempts to exceed the memory
specified here, the container is killed. The total amount of memory reserved for all containers within a task
must be lower than the task memory value, if one is specified. This parameter maps to
Memory in the Create a
container section of the Docker Remote API and the
--memory option to docker run.
If using the Fargate launch type, this parameter is optional.
If using the EC2 launch type, you must specify either a task-level memory value or a container-level memory
value. If you specify both a container-level memory and memoryReservation value,
memory must be greater than memoryReservation. If you specify
memoryReservation, then that value is subtracted from the available memory resources for the
container instance on which the container is placed. Otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memory value, if one is specified. This parameter
maps to Memory in the Create a container section
of the Docker Remote API and the
--memory option to docker run.
If using the Fargate launch type, this parameter is optional.
If using the EC2 launch type, you must specify either a task-level memory value or a container-level
memory value. If you specify both a container-level memory and
memoryReservation value, memory must be greater than
memoryReservation. If you specify memoryReservation, then that value is
subtracted from the available memory resources for the container instance on which the container is
placed. Otherwise, the value of memory is used.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
public final Integer memoryReservation()
The soft limit (in MiB) of memory to reserve for the container. When system memory is under heavy contention,
Docker attempts to keep the container memory to this soft limit. However, your container can consume more memory
when it needs to, up to either the hard limit specified with the memory parameter (if applicable),
or all of the available memory on the container instance, whichever comes first. This parameter maps to
MemoryReservation in the Create a container section of the
Docker Remote API and the
--memory-reservation option to docker run.
If a task-level memory value is not specified, you must specify a non-zero integer for one or both of
memory or memoryReservation in a container definition. If you specify both,
memory must be greater than memoryReservation. If you specify
memoryReservation, then that value is subtracted from the available memory resources for the
container instance on which the container is placed. Otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of memory for
short periods of time, you can set a memoryReservation of 128 MiB, and a memory hard
limit of 300 MiB. This configuration would allow the container to only reserve 128 MiB of memory from the
remaining resources on the container instance, but also allow the container to consume more memory resources when
needed.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
memory
parameter (if applicable), or all of the available memory on the container instance, whichever comes
first. This parameter maps to MemoryReservation in the Create a container section
of the Docker Remote API and the
--memory-reservation option to docker run.
If a task-level memory value is not specified, you must specify a non-zero integer for one or both of
memory or memoryReservation in a container definition. If you specify both,
memory must be greater than memoryReservation. If you specify
memoryReservation, then that value is subtracted from the available memory resources for the
container instance on which the container is placed. Otherwise, the value of memory is used.
For example, if your container normally uses 128 MiB of memory, but occasionally bursts to 256 MiB of
memory for short periods of time, you can set a memoryReservation of 128 MiB, and a
memory hard limit of 300 MiB. This configuration would allow the container to only reserve
128 MiB of memory from the remaining resources on the container instance, but also allow the container to
consume more memory resources when needed.
The Docker daemon reserves a minimum of 4 MiB of memory for a container, so you should not specify fewer than 4 MiB of memory for your containers.
public final boolean hasLinks()
public final List<String> links()
The links parameter allows containers to communicate with each other without the need for port
mappings. This parameter is only supported if the network mode of a task definition is bridge. The
name:internalName construct is analogous to name:alias in Docker links. Up to 255
letters (uppercase and lowercase), numbers, underscores, and hyphens are allowed. For more information about
linking Docker containers, go to Legacy container links in
the Docker documentation. This parameter maps to Links in the Create a container section of the
Docker Remote API and the --link option to
docker run.
This parameter is not supported for Windows containers.
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasLinks() to see if a value was sent in this field.
links parameter allows containers to communicate with each other without the need for
port mappings. This parameter is only supported if the network mode of a task definition is
bridge. The name:internalName construct is analogous to name:alias
in Docker links. Up to 255 letters (uppercase and lowercase), numbers, underscores, and hyphens are
allowed. For more information about linking Docker containers, go to Legacy container links in the Docker documentation.
This parameter maps to Links in the Create a container section
of the Docker Remote API and the
--link option to docker run. This parameter is not supported for Windows containers.
Containers that are collocated on a single container instance may be able to communicate with each other without requiring links or host port mappings. Network isolation is achieved on the container instance using security groups and VPC settings.
public final boolean hasPortMappings()
public final List<PortMapping> portMappings()
The list of port mappings for the container. Port mappings allow containers to access ports on the host container instance to send or receive traffic.
For task definitions that use the awsvpc network mode, you should only specify the
containerPort. The hostPort can be left blank or it must be the same value as the
containerPort.
Port mappings on Windows use the NetNAT gateway address rather than localhost. There is
no loopback for port mappings on Windows, so you cannot access a container's mapped port from the host itself.
This parameter maps to PortBindings in the Create a container section of the
Docker Remote API and the --publish option
to docker run. If the network
mode of a task definition is set to none, then you can't specify port mappings. If the network mode
of a task definition is set to host, then host ports must either be undefined or they must match the
container port in the port mapping.
After a task reaches the RUNNING status, manual and automatic host and container port assignments
are visible in the Network Bindings section of a container description for a selected task in the Amazon
ECS console. The assignments are also visible in the networkBindings section DescribeTasks
responses.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasPortMappings() to see if a value was sent in this field.
For task definitions that use the awsvpc network mode, you should only specify the
containerPort. The hostPort can be left blank or it must be the same value as
the containerPort.
Port mappings on Windows use the NetNAT gateway address rather than localhost.
There is no loopback for port mappings on Windows, so you cannot access a container's mapped port from
the host itself.
This parameter maps to PortBindings in the Create a container section
of the Docker Remote API and the
--publish option to docker run. If the
network mode of a task definition is set to none, then you can't specify port mappings. If
the network mode of a task definition is set to host, then host ports must either be
undefined or they must match the container port in the port mapping.
After a task reaches the RUNNING status, manual and automatic host and container port
assignments are visible in the Network Bindings section of a container description for a selected
task in the Amazon ECS console. The assignments are also visible in the networkBindings
section DescribeTasks responses.
public final Boolean 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. If the
essential parameter of a container is marked as false, then its failure does not affect
the rest of the containers in a task. If this parameter is omitted, a container is assumed to be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide.
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. If the
essential parameter of a container is marked as false, then its failure does
not affect the rest of the containers in a task. If this parameter is omitted, a container is assumed to
be essential.
All tasks must have at least one essential container. If you have an application that is composed of multiple containers, you should group containers that are used for a common purpose into components, and separate the different components into multiple task definitions. For more information, see Application Architecture in the Amazon Elastic Container Service Developer Guide.
public final boolean hasEntryPoint()
public final List<String> entryPoint()
Early versions of the Amazon ECS container agent do not properly handle entryPoint parameters. If
you have problems using entryPoint, update your container agent or enter your commands and arguments
as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section of the
Docker Remote API and the --entrypoint
option to docker run. For more
information, see https://docs.docker.com/engine
/reference/builder/#entrypoint.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasEntryPoint() to see if a value was sent in this field.
Early versions of the Amazon ECS container agent do not properly handle entryPoint
parameters. If you have problems using entryPoint, update your container agent or enter your
commands and arguments as command array items instead.
The entry point that is passed to the container. This parameter maps to Entrypoint in the Create a container section
of the Docker Remote API and the
--entrypoint option to docker run. For more
information, see https://docs.docker
.com/engine/reference/builder/#entrypoint.
public final boolean hasCommand()
public final List<String> command()
The command that is passed to the container. This parameter maps to Cmd in the Create a container section of the
Docker Remote API and the COMMAND parameter
to docker run. For more
information, see https://docs.docker.com/engine/reference
/builder/#cmd. If there are multiple arguments, each argument should be a separated string in the array.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasCommand() to see if a value was sent in this field.
Cmd in the Create a container section
of the Docker Remote API and the
COMMAND parameter to docker run. For more
information, see https://docs.docker.com/engine
/reference/builder/#cmd. If there are multiple arguments, each argument should be a separated string
in the array.public final boolean hasEnvironment()
public final List<KeyValuePair> environment()
The environment variables to pass to a container. This parameter maps to Env in the Create a container section of the
Docker Remote API and the --env option to docker run.
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasEnvironment() to see if a value was sent in this field.
Env in the Create a container section
of the Docker Remote API and the
--env option to docker run.
We do not recommend using plaintext environment variables for sensitive information, such as credential data.
public final boolean hasEnvironmentFiles()
public final List<EnvironmentFile> environmentFiles()
A list of files containing the environment variables to pass to a container. This parameter maps to the
--env-file option to docker run.
You can specify up to ten environment files. The file must have a .env file extension. Each line in
an environment file should contain an environment variable in VARIABLE=VALUE format. Lines beginning
with # are treated as comments and are ignored. For more information on the environment variable
file syntax, see Declare default environment variables in
file.
If there are environment variables specified using the environment parameter in a container
definition, they take precedence over the variables contained within an environment file. If multiple environment
files are specified that contain the same variable, they are processed from the top down. It is recommended to
use unique variable names. For more information, see Specifying Environment
Variables in the Amazon Elastic Container Service Developer Guide.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasEnvironmentFiles() to see if a value was sent in this field.
--env-file option to docker run.
You can specify up to ten environment files. The file must have a .env file extension. Each
line in an environment file should contain an environment variable in VARIABLE=VALUE format.
Lines beginning with # are treated as comments and are ignored. For more information on the
environment variable file syntax, see Declare default
environment variables in file.
If there are environment variables specified using the environment parameter in a container
definition, they take precedence over the variables contained within an environment file. If multiple
environment files are specified that contain the same variable, they are processed from the top down. It
is recommended to use unique variable names. For more information, see Specifying
Environment Variables in the Amazon Elastic Container Service Developer Guide.
public final boolean hasMountPoints()
public final List<MountPoint> mountPoints()
The mount points for data volumes in your container.
This parameter maps to Volumes in the Create a container section of the
Docker Remote API and the --volume option to
docker run.
Windows containers can mount whole directories on the same drive as $env:ProgramData. Windows
containers cannot mount directories on a different drive, and mount point cannot be across drives.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasMountPoints() to see if a value was sent in this field.
This parameter maps to Volumes in the Create a container section
of the Docker Remote API and the
--volume option to docker run.
Windows containers can mount whole directories on the same drive as $env:ProgramData.
Windows containers cannot mount directories on a different drive, and mount point cannot be across
drives.
public final boolean hasVolumesFrom()
public final List<VolumeFrom> volumesFrom()
Data volumes to mount from another container. This parameter maps to VolumesFrom in the Create a container section of the
Docker Remote API and the --volumes-from
option to docker run.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasVolumesFrom() to see if a value was sent in this field.
VolumesFrom in the Create a container section
of the Docker Remote API and the
--volumes-from option to docker run.public final LinuxParameters linuxParameters()
Linux-specific modifications that are applied to the container, such as Linux kernel capabilities. For more information see KernelCapabilities.
This parameter is not supported for Windows containers.
This parameter is not supported for Windows containers.
public final boolean hasSecrets()
public final List<Secret> secrets()
The secrets to pass to the container. For more information, see Specifying Sensitive Data in the Amazon Elastic Container Service Developer Guide.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasSecrets() to see if a value was sent in this field.
public final boolean hasDependsOn()
public final List<ContainerDependency> dependsOn()
The dependencies defined for container startup and shutdown. A container can contain multiple dependencies. When a dependency is defined for container startup, for container shutdown it is reversed.
For tasks using the EC2 launch type, the container instances require at least version 1.26.0 of the container
agent to enable container dependencies. However, we recommend using the latest container agent version. For
information about checking your agent version and updating to the latest version, see Updating the Amazon ECS
Container Agent in the Amazon Elastic Container Service Developer Guide. If you are using an Amazon
ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of the ecs-init package. If
your container instances are launched from version 20190301 or later, then they contain the required
versions of the container agent and ecs-init. For more information, see Amazon ECS-optimized
Linux AMI in the Amazon Elastic Container Service Developer Guide.
For tasks using the Fargate launch type, the task or service requires platform version 1.3.0 or
later.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasDependsOn() to see if a value was sent in this field.
For tasks using the EC2 launch type, the container instances require at least version 1.26.0 of the
container agent to enable container dependencies. However, we recommend using the latest container agent
version. For information about checking your agent version and updating to the latest version, see Updating the
Amazon ECS Container Agent in the Amazon Elastic Container Service Developer Guide. If you are
using an Amazon ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of the
ecs-init package. If your container instances are launched from version
20190301 or later, then they contain the required versions of the container agent and
ecs-init. For more information, see Amazon
ECS-optimized Linux AMI in the Amazon Elastic Container Service Developer Guide.
For tasks using the Fargate launch type, the task or service requires platform version 1.3.0
or later.
public final Integer startTimeout()
Time duration (in seconds) to wait before giving up on resolving dependencies for a container. For example, you
specify two containers in a task definition with containerA having a dependency on containerB reaching a
COMPLETE, SUCCESS, or HEALTHY status. If a startTimeout value
is specified for containerB and it does not reach the desired status within that time then containerA will give
up and not start. This results in the task transitioning to a STOPPED state.
When the ECS_CONTAINER_START_TIMEOUT container agent configuration variable is used, it is enforced
indendently from this start timeout value.
For tasks using the Fargate launch type, this parameter requires that the task or service uses platform version 1.3.0 or later.
For tasks using the EC2 launch type, your container instances require at least version 1.26.0 of the
container agent to enable a container start timeout value. However, we recommend using the latest container agent
version. For information about checking your agent version and updating to the latest version, see Updating the Amazon ECS
Container Agent in the Amazon Elastic Container Service Developer Guide. If you are using an Amazon
ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of the ecs-init
package. If your container instances are launched from version 20190301 or later, then they contain
the required versions of the container agent and ecs-init. For more information, see Amazon ECS-optimized
Linux AMI in the Amazon Elastic Container Service Developer Guide.
COMPLETE, SUCCESS, or HEALTHY status. If a
startTimeout value is specified for containerB and it does not reach the desired status
within that time then containerA will give up and not start. This results in the task transitioning to a
STOPPED state.
When the ECS_CONTAINER_START_TIMEOUT container agent configuration variable is used, it is
enforced indendently from this start timeout value.
For tasks using the Fargate launch type, this parameter requires that the task or service uses platform version 1.3.0 or later.
For tasks using the EC2 launch type, your container instances require at least version
1.26.0 of the container agent to enable a container start timeout value. However, we
recommend using the latest container agent version. For information about checking your agent version and
updating to the latest version, see Updating the
Amazon ECS Container Agent in the Amazon Elastic Container Service Developer Guide. If you are
using an Amazon ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of
the ecs-init package. If your container instances are launched from version
20190301 or later, then they contain the required versions of the container agent and
ecs-init. For more information, see Amazon
ECS-optimized Linux AMI in the Amazon Elastic Container Service Developer Guide.
public final Integer stopTimeout()
Time duration (in seconds) to wait before the container is forcefully killed if it doesn't exit normally on its own.
For tasks using the Fargate launch type, the task or service requires platform version 1.3.0 or later. The max stop timeout value is 120 seconds and if the parameter is not specified, the default value of 30 seconds is used.
For tasks using the EC2 launch type, if the stopTimeout parameter is not specified, the value set
for the Amazon ECS container agent configuration variable ECS_CONTAINER_STOP_TIMEOUT is used by
default. If neither the stopTimeout parameter or the ECS_CONTAINER_STOP_TIMEOUT agent
configuration variable are set, then the default values of 30 seconds for Linux containers and 30 seconds on
Windows containers are used. Your container instances require at least version 1.26.0 of the container agent to
enable a container stop timeout value. However, we recommend using the latest container agent version. For
information about checking your agent version and updating to the latest version, see Updating the Amazon ECS
Container Agent in the Amazon Elastic Container Service Developer Guide. If you are using an Amazon
ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of the ecs-init package. If
your container instances are launched from version 20190301 or later, then they contain the required
versions of the container agent and ecs-init. For more information, see Amazon ECS-optimized
Linux AMI in the Amazon Elastic Container Service Developer Guide.
For tasks using the Fargate launch type, the task or service requires platform version 1.3.0 or later. The max stop timeout value is 120 seconds and if the parameter is not specified, the default value of 30 seconds is used.
For tasks using the EC2 launch type, if the stopTimeout parameter is not specified, the
value set for the Amazon ECS container agent configuration variable
ECS_CONTAINER_STOP_TIMEOUT is used by default. If neither the stopTimeout
parameter or the ECS_CONTAINER_STOP_TIMEOUT agent configuration variable are set, then the
default values of 30 seconds for Linux containers and 30 seconds on Windows containers are used. Your
container instances require at least version 1.26.0 of the container agent to enable a container stop
timeout value. However, we recommend using the latest container agent version. For information about
checking your agent version and updating to the latest version, see Updating the
Amazon ECS Container Agent in the Amazon Elastic Container Service Developer Guide. If you are
using an Amazon ECS-optimized Linux AMI, your instance needs at least version 1.26.0-1 of the
ecs-init package. If your container instances are launched from version
20190301 or later, then they contain the required versions of the container agent and
ecs-init. For more information, see Amazon
ECS-optimized Linux AMI in the Amazon Elastic Container Service Developer Guide.
public final String hostname()
The hostname to use for your container. This parameter maps to Hostname in the Create a container section of the
Docker Remote API and the --hostname option
to docker run.
The hostname parameter is not supported if you are using the awsvpc network mode.
Hostname in the Create a container section
of the Docker Remote API and the
--hostname option to docker run.
The hostname parameter is not supported if you are using the awsvpc network
mode.
public final String user()
The user to use inside the container. This parameter maps to User in the Create a container section of the
Docker Remote API and the --user option to
docker run.
When running tasks using the host network mode, you should not run containers using the root user
(UID 0). It is considered best practice to use a non-root user.
You can specify the user using the following formats. If specifying a UID or GID, you must specify
it as a positive integer.
user
user:group
uid
uid:gid
user:gid
uid:group
This parameter is not supported for Windows containers.
User in the Create a container section
of the Docker Remote API and the
--user option to docker run.
When running tasks using the host network mode, you should not run containers using the root
user (UID 0). It is considered best practice to use a non-root user.
You can specify the user using the following formats. If specifying a UID or GID, you must
specify it as a positive integer.
user
user:group
uid
uid:gid
user:gid
uid:group
This parameter is not supported for Windows containers.
public final String workingDirectory()
The working directory in which to run commands inside the container. This parameter maps to
WorkingDir in the Create a container section of the
Docker Remote API and the --workdir option
to docker run.
WorkingDir in the Create a container section
of the Docker Remote API and the
--workdir option to docker run.public final Boolean disableNetworking()
When this parameter is true, networking is disabled within the container. This parameter maps to
NetworkDisabled in the Create a container section of the
Docker Remote API.
This parameter is not supported for Windows containers.
NetworkDisabled in the Create a container section
of the Docker Remote API. This parameter is not supported for Windows containers.
public final Boolean privileged()
When this parameter is true, the container is given elevated privileges on the host container instance (similar
to the root user). This parameter maps to Privileged in the Create a container section of the
Docker Remote API and the --privileged
option to docker run.
This parameter is not supported for Windows containers or tasks run on AWS Fargate.
root user). This parameter maps to Privileged in the Create a container section
of the Docker Remote API and the
--privileged option to docker run. This parameter is not supported for Windows containers or tasks run on AWS Fargate.
public final Boolean readonlyRootFilesystem()
When this parameter is true, the container is given read-only access to its root file system. This parameter maps
to ReadonlyRootfs in the Create a container section of the
Docker Remote API and the --read-only option
to docker run.
This parameter is not supported for Windows containers.
ReadonlyRootfs in the Create a container section
of the Docker Remote API and the
--read-only option to docker run. This parameter is not supported for Windows containers.
public final boolean hasDnsServers()
public final List<String> dnsServers()
A list of DNS servers that are presented to the container. This parameter maps to Dns in the Create a container section of the
Docker Remote API and the --dns option to docker run.
This parameter is not supported for Windows containers.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasDnsServers() to see if a value was sent in this field.
Dns in the
Create a container
section of the Docker Remote API and the
--dns option to docker run. This parameter is not supported for Windows containers.
public final boolean hasDnsSearchDomains()
public final List<String> dnsSearchDomains()
A list of DNS search domains that are presented to the container. This parameter maps to DnsSearch
in the Create a container
section of the Docker Remote API and the
--dns-search option to docker run.
This parameter is not supported for Windows containers.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasDnsSearchDomains() to see if a value was sent in this field.
DnsSearch in the Create a container section
of the Docker Remote API and the
--dns-search option to docker run. This parameter is not supported for Windows containers.
public final boolean hasExtraHosts()
public final List<HostEntry> extraHosts()
A list of hostnames and IP address mappings to append to the /etc/hosts file on the container. This
parameter maps to ExtraHosts in the Create a container section of the
Docker Remote API and the --add-host option
to docker run.
This parameter is not supported for Windows containers or tasks that use the awsvpc network mode.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasExtraHosts() to see if a value was sent in this field.
/etc/hosts file on the
container. This parameter maps to ExtraHosts in the Create a container section
of the Docker Remote API and the
--add-host option to docker run.
This parameter is not supported for Windows containers or tasks that use the awsvpc network
mode.
public final boolean hasDockerSecurityOptions()
public final List<String> dockerSecurityOptions()
A list of strings to provide custom labels for SELinux and AppArmor multi-level security systems. This field is not valid for containers in tasks using the Fargate launch type.
With Windows containers, this parameter can be used to reference a credential spec file when configuring a container for Active Directory authentication. For more information, see Using gMSAs for Windows Containers in the Amazon Elastic Container Service Developer Guide.
This parameter maps to SecurityOpt in the Create a container section of the
Docker Remote API and the --security-opt
option to docker run.
The Amazon ECS container agent running on a container instance must register with the
ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables before
containers placed on that instance can use these security options. For more information, see Amazon ECS Container
Agent Configuration in the Amazon Elastic Container Service Developer Guide.
For more information about valid values, see Docker Run Security Configuration.
Valid values: "no-new-privileges" | "apparmor:PROFILE" | "label:value" | "credentialspec:CredentialSpecFilePath"
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasDockerSecurityOptions() to see if a value was sent in this field.
With Windows containers, this parameter can be used to reference a credential spec file when configuring a container for Active Directory authentication. For more information, see Using gMSAs for Windows Containers in the Amazon Elastic Container Service Developer Guide.
This parameter maps to SecurityOpt in the Create a container section
of the Docker Remote API and the
--security-opt option to docker run.
The Amazon ECS container agent running on a container instance must register with the
ECS_SELINUX_CAPABLE=true or ECS_APPARMOR_CAPABLE=true environment variables
before containers placed on that instance can use these security options. For more information, see Amazon ECS
Container Agent Configuration in the Amazon Elastic Container Service Developer Guide.
For more information about valid values, see Docker Run Security Configuration.
Valid values: "no-new-privileges" | "apparmor:PROFILE" | "label:value" | "credentialspec:CredentialSpecFilePath"
public final Boolean interactive()
When this parameter is true, this allows you to deploy containerized applications that require
stdin or a tty to be allocated. This parameter maps to OpenStdin in the Create a container section of the
Docker Remote API and the --interactive
option to docker run.
true, this allows you to deploy containerized applications that
require stdin or a tty to be allocated. This parameter maps to
OpenStdin in the Create a container section
of the Docker Remote API and the
--interactive option to docker run.public final Boolean pseudoTerminal()
When this parameter is true, a TTY is allocated. This parameter maps to Tty in the Create a container section of the
Docker Remote API and the --tty option to docker run.
true, a TTY is allocated. This parameter maps to Tty in
the Create a container
section of the Docker Remote API and the
--tty option to docker run.public final boolean hasDockerLabels()
public final Map<String,String> dockerLabels()
A key/value map of labels to add to the container. This parameter maps to Labels in the Create a container section of the
Docker Remote API and the --label option to
docker run. This parameter
requires version 1.18 of the Docker Remote API or greater on your container instance. To check the Docker Remote
API version on your container instance, log in to your container instance and run the following command:
sudo docker version --format '{{.Server.APIVersion}}'
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasDockerLabels() to see if a value was sent in this field.
Labels in the Create a container section
of the Docker Remote API and the
--label option to docker run. This
parameter requires version 1.18 of the Docker Remote API or greater on your container instance. To check
the Docker Remote API version on your container instance, log in to your container instance and run the
following command: sudo docker version --format '{{.Server.APIVersion}}'public final boolean hasUlimits()
public final List<Ulimit> ulimits()
A list of ulimits to set in the container. If a ulimit value is specified in a task definition, it
will override the default values set by Docker. This parameter maps to Ulimits in the Create a container section of the
Docker Remote API and the --ulimit option to
docker run. Valid naming
values are displayed in the Ulimit data type.
Amazon ECS tasks hosted on Fargate use the default resource limit values set by the operating system with the
exception of the nofile resource limit parameter which Fargate overrides. The nofile
resource limit sets a restriction on the number of open files that a container can use. The default
nofile soft limit is 1024 and hard limit is 4096.
This parameter requires version 1.18 of the Docker Remote API or greater on your container instance. To check the
Docker Remote API version on your container instance, log in to your container instance and run the following
command: sudo docker version --format '{{.Server.APIVersion}}'
This parameter is not supported for Windows containers.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasUlimits() to see if a value was sent in this field.
ulimits to set in the container. If a ulimit value is specified in a task
definition, it will override the default values set by Docker. This parameter maps to
Ulimits in the Create a container section
of the Docker Remote API and the
--ulimit option to docker run. Valid naming
values are displayed in the Ulimit data type.
Amazon ECS tasks hosted on Fargate use the default resource limit values set by the operating system with
the exception of the nofile resource limit parameter which Fargate overrides. The
nofile resource limit sets a restriction on the number of open files that a container can
use. The default nofile soft limit is 1024 and hard limit is 4096.
This parameter requires version 1.18 of the Docker Remote API or greater on your container instance. To
check the Docker Remote API version on your container instance, log in to your container instance and run
the following command: sudo docker version --format '{{.Server.APIVersion}}'
This parameter is not supported for Windows containers.
public final LogConfiguration logConfiguration()
The log configuration specification for the container.
This parameter maps to LogConfig in the Create a container section of the
Docker Remote API and the --log-driver
option to docker run. By
default, containers use the same logging driver that the Docker daemon uses. However the container may use a
different logging driver than the Docker daemon by specifying a log driver with this parameter in the container
definition. To use a different logging driver for a container, the log system must be configured properly on the
container instance (or on a different log server for remote logging options). For more information on the options
for different supported log drivers, see Configure logging drivers in the Docker
documentation.
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). Additional log drivers may be available in future releases of the Amazon ECS container agent.
This parameter requires version 1.18 of the Docker Remote API or greater on your container instance. To check the
Docker Remote API version on your container instance, log in to your container instance and run the following
command: sudo docker version --format '{{.Server.APIVersion}}'
The Amazon ECS container agent running on a container instance must register the logging drivers available on
that instance with the ECS_AVAILABLE_LOGGING_DRIVERS environment variable before containers placed
on that instance can use these log configuration options. For more information, see Amazon ECS Container
Agent Configuration in the Amazon Elastic Container Service Developer Guide.
This parameter maps to LogConfig in the Create a container section
of the Docker Remote API and the
--log-driver option to docker run. By default,
containers use the same logging driver that the Docker daemon uses. However the container may use a
different logging driver than the Docker daemon by specifying a log driver with this parameter in the
container definition. To use a different logging driver for a container, the log system must be
configured properly on the container instance (or on a different log server for remote logging options).
For more information on the options for different supported log drivers, see Configure logging drivers in the Docker
documentation.
Amazon ECS currently supports a subset of the logging drivers available to the Docker daemon (shown in the LogConfiguration data type). Additional log drivers may be available in future releases of the Amazon ECS container agent.
This parameter requires version 1.18 of the Docker Remote API or greater on your container instance. To
check the Docker Remote API version on your container instance, log in to your container instance and run
the following command: sudo docker version --format '{{.Server.APIVersion}}'
The Amazon ECS container agent running on a container instance must register the logging drivers
available on that instance with the ECS_AVAILABLE_LOGGING_DRIVERS environment variable
before containers placed on that instance can use these log configuration options. For more information,
see Amazon
ECS Container Agent Configuration in the Amazon Elastic Container Service Developer Guide.
public final HealthCheck healthCheck()
The container health check command and associated configuration parameters for the container. This parameter maps
to HealthCheck in the Create a container section of the
Docker Remote API and the HEALTHCHECK
parameter of docker run.
HealthCheck in the Create a container section
of the Docker Remote API and the
HEALTHCHECK parameter of docker run.public final boolean hasSystemControls()
public final List<SystemControl> systemControls()
A list of namespaced kernel parameters to set in the container. This parameter maps to Sysctls in
the Create a container section
of the Docker Remote API and the --sysctl
option to docker run.
It is not recommended that you specify network-related systemControls parameters for multiple
containers in a single task that also uses either the awsvpc or host network modes. For
tasks that use the awsvpc network mode, the container that is started last determines which
systemControls parameters take effect. For tasks that use the host network mode, it
changes the container instance's namespaced kernel parameters as well as the containers.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasSystemControls() to see if a value was sent in this field.
Sysctls in the Create a container section
of the Docker Remote API and the
--sysctl option to docker run.
It is not recommended that you specify network-related systemControls parameters for
multiple containers in a single task that also uses either the awsvpc or host
network modes. For tasks that use the awsvpc network mode, the container that is started
last determines which systemControls parameters take effect. For tasks that use the
host network mode, it changes the container instance's namespaced kernel parameters as well
as the containers.
public final boolean hasResourceRequirements()
public final List<ResourceRequirement> resourceRequirements()
The type and amount of a resource to assign to a container. The only supported resource is a GPU.
Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.
You can use hasResourceRequirements() to see if a value was sent in this field.
public final FirelensConfiguration firelensConfiguration()
The FireLens configuration for the container. This is used to specify and configure a log router for container logs. For more information, see Custom Log Routing in the Amazon Elastic Container Service Developer Guide.
public ContainerDefinition.Builder toBuilder()
toBuilder in interface ToCopyableBuilder<ContainerDefinition.Builder,ContainerDefinition>public static ContainerDefinition.Builder builder()
public static Class<? extends ContainerDefinition.Builder> serializableBuilderClass()
public final boolean equalsBySdkFields(Object obj)
equalsBySdkFields in interface SdkPojopublic final String toString()
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