Container for the parameters to the CreateMountTarget operation. Creates a mount target for a file system. You can then mount the file system on EC2 instances by using the mount target.
You can create one mount target in each Availability Zone in your VPC. All EC2 instances in a VPC within a given Availability Zone share a single mount target for a given file system. If you have multiple subnets in an Availability Zone, you create a mount target in one of the subnets. EC2 instances do not need to be in the same subnet as the mount target in order to access their file system.
You can create only one mount target for a One Zone file system. You must create that
mount target in the same Availability Zone in which the file system is located. Use
the AvailabilityZoneName and AvailabiltyZoneId properties in the DescribeFileSystems
response object to get this information. Use the subnetId associated with the
file system's Availability Zone when creating the mount target.
For more information, see Amazon EFS: How it Works.
To create a mount target for a file system, the file system's lifecycle state must
be available. For more information, see DescribeFileSystems.
In the request, provide the following:
The file system ID for which you are creating the mount target.
A subnet ID, which determines the following:
The VPC in which Amazon EFS creates the mount target
The Availability Zone in which Amazon EFS creates the mount target
The IP address range from which Amazon EFS selects the IP address of the mount target (if you don't specify an IP address in the request)
After creating the mount target, Amazon EFS returns a response that includes, a MountTargetId
and an IpAddress. You use this IP address when mounting the file system in
an EC2 instance. You can also use the mount target's DNS name when mounting the file
system. The EC2 instance on which you mount the file system by using the mount target
can resolve the mount target's DNS name to its IP address. For more information, see
How
it Works: Implementation Overview.
Note that you can create mount targets for a file system in only one VPC, and there can be only one mount target per Availability Zone. That is, if the file system already has one or more mount targets created for it, the subnet specified in the request to add another mount target must meet the following requirements:
Must belong to the same VPC as the subnets of the existing mount targets
Must not be in the same Availability Zone as any of the subnets of the existing mount targets
If the request satisfies the requirements, Amazon EFS does the following:
Creates a new mount target in the specified subnet.
Also creates a new network interface in the subnet as follows:
If the request provides an
IpAddress, Amazon EFS assigns that IP address to the network interface. Otherwise, Amazon EFS assigns a free address in the subnet (in the same way that the Amazon EC2CreateNetworkInterfacecall does when a request does not specify a primary private IP address).If the request provides
SecurityGroups, this network interface is associated with those security groups. Otherwise, it belongs to the default security group for the subnet's VPC.Assigns the description
Mount target fsmt-id for file system fs-idwherefsmt-idis the mount target ID, andfs-idis theFileSystemId.Sets the
requesterManagedproperty of the network interface totrue, and therequesterIdvalue toEFS.
Each Amazon EFS mount target has one corresponding requester-managed EC2 network interface. After the network interface is created, Amazon EFS sets the
NetworkInterfaceIdfield in the mount target's description to the network interface ID, and theIpAddressfield to its address. If network interface creation fails, the entireCreateMountTargetoperation fails.
The CreateMountTarget call returns only after creating the network interface,
but while the mount target state is still creating, you can check the mount
target creation status by calling the DescribeMountTargets operation, which
among other things returns the mount target state.
We recommend that you create a mount target in each of the Availability Zones. There are cost considerations for using a file system in an Availability Zone through a mount target created in another Availability Zone. For more information, see Amazon EFS. In addition, by always using a mount target local to the instance's Availability Zone, you eliminate a partial failure scenario. If the Availability Zone in which your mount target is created goes down, then you can't access your file system through that mount target.
This operation requires permissions for the following action on the file system:
elasticfilesystem:CreateMountTarget
This operation also requires permissions for the following Amazon EC2 actions:
ec2:DescribeSubnetsec2:DescribeNetworkInterfacesec2:CreateNetworkInterface
Inheritance Hierarchy
Amazon.Runtime.AmazonWebServiceRequest
Amazon.ElasticFileSystem.AmazonElasticFileSystemRequest
Amazon.ElasticFileSystem.Model.CreateMountTargetRequest
Namespace: Amazon.ElasticFileSystem.Model
Assembly: AWSSDK.ElasticFileSystem.dll
Version: 3.x.y.z
Syntax
public class CreateMountTargetRequest : AmazonElasticFileSystemRequest IAmazonWebServiceRequest
The CreateMountTargetRequest type exposes the following members
Constructors
| Name | Description | |
|---|---|---|
|
CreateMountTargetRequest() |
Properties
| Name | Type | Description | |
|---|---|---|---|
|
|
FileSystemId | System.String |
Gets and sets the property FileSystemId. The ID of the file system for which to create the mount target. |
|
|
IpAddress | System.String |
Gets and sets the property IpAddress. Valid IPv4 address within the address range of the specified subnet. |
|
|
SecurityGroups | System.Collections.Generic.List<System.String> |
Gets and sets the property SecurityGroups.
Up to five VPC security group IDs, of the form |
|
|
SubnetId | System.String |
Gets and sets the property SubnetId. The ID of the subnet to add the mount target in. For One Zone file systems, use the subnet that is associated with the file system's Availability Zone. |
Examples
This operation creates a new mount target for an EFS file system.
To create a new mount target
var client = new AmazonElasticFileSystemClient();
var response = client.CreateMountTarget(new CreateMountTargetRequest
{
FileSystemId = "fs-01234567",
SubnetId = "subnet-1234abcd"
});
string fileSystemId = response.FileSystemId;
string ipAddress = response.IpAddress;
string lifeCycleState = response.LifeCycleState;
string mountTargetId = response.MountTargetId;
string networkInterfaceId = response.NetworkInterfaceId;
string ownerId = response.OwnerId;
string subnetId = response.SubnetId;
Version Information
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5, 4.0, 3.5