AWS::FSx::FileSystem ClientConfigurations - Amazon CloudFormation
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AWS::FSx::FileSystem ClientConfigurations

Specifies who can mount an OpenZFS file system and the options available while mounting the file system.


To declare this entity in your Amazon CloudFormation template, use the following syntax:


{ "Clients" : String, "Options" : [ String, ... ] }


Clients: String Options: - String



A value that specifies who can mount the file system. You can provide a wildcard character (*), an IP address (, or a CIDR address ( By default, Amazon FSx uses the wildcard character when specifying the client.

Required: No

Type: String

Pattern: ^[ -~]{1,128}$

Minimum: 1

Maximum: 128

Update requires: Replacement


The options to use when mounting the file system. For a list of options that you can use with Network File System (NFS), see the exports(5) - Linux man page. When choosing your options, consider the following:

  • crossmnt is used by default. If you don't specify crossmnt when changing the client configuration, you won't be able to see or access snapshots in your file system's snapshot directory.

  • sync is used by default. If you instead specify async, the system acknowledges writes before writing to disk. If the system crashes before the writes are finished, you lose the unwritten data.

Required: No

Type: Array of String

Minimum: 1

Maximum: 20

Update requires: Replacement