Use Amazon FSx with Amazon EC2 instances

The Amazon FSx family of services makes it easy to launch, run, and scale shared storage powered by popular commercial and open-source file systems. You can use the new launch instance wizard to automatically attach the following types of Amazon FSx file systems to your Amazon EC2 instances at launch:

You can choose to mount an existing file system that you created previously, or you can create a new file system to mount to an instance at launch.

Security groups and user data script

When you mount an Amazon FSx file system to an instance using the launch instance wizard, you can choose whether to automatically create and attach the security groups needed to enable access to the file system, and whether to automatically include the user data scripts needed to mount the file system and make it available for use.

Security groups

If you choose to automatically create the security groups that are needed to enable access to the file system, the launch instance wizard creates and attaches two security groups - one security group is attached to the instance, and the other is attached to the file system. For more information about the security group requirements, see FSx for ONTAP file system access control with Amazon VPC and FSx for OpenZFS file system access control with Amazon VPC.

We add the tag Name=instance-sg-1 to the security group that is created and attached to the instance. The value in the tag is automatically incremented each time the launch instance wizard creates a security group for Amazon FSx file systems.

The security group includes the following output rules, but no inbound rules.

The security group that is created and attached to the file system is tagged with Name=fsx-sg-1. The value in the tag is automatically incremented each time the launch instance wizard creates a security group for Amazon FSx file systems.

The security group includes the following rules.

User data script

If you choose to automatically attach user data scripts, the launch instance wizard adds the following user data to the instance. This script installs the necessary packages, mounts the file system, and updates your instance settings so that the file system will automatically re-mount whenever the instance restarts.

#cloud-config
package_update: true
package_upgrade: true
runcmd:
- yum install -y nfs-utils
- apt-get -y install nfs-common
- svm_id_1=svm_id
- file_system_id_1=file_system_id
- vol_path_1=/vol1
- fsx_mount_point_1=/mnt/fsx/fs1
- mkdir -p "${fsx_mount_point_1}"
- if [ -z "$svm_id_1" ]; then printf "\n${file_system_id_1}.fsx.eu-north-1.amazonaws.com:/${vol_path_1} ${fsx_mount_point_1} nfs4 nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport,_netdev 0 0\n" >> /etc/fstab; else printf "\n${svm_id_1}.${file_system_id_1}.fsx.eu-north-1.amazonaws.com:/${vol_path_1} ${fsx_mount_point_1} nfs4 nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport,_netdev 0 0\n" >> /etc/fstab; fi
- retryCnt=15; waitTime=30; while true; do mount -a -t nfs4 defaults; if [ $? = 0 ] || [ $retryCnt -lt 1 ]; then echo File system mounted successfully; break; fi; echo File system not available, retrying to mount.; ((retryCnt--)); sleep $waitTime; done;

Mount an Amazon FSx file system at launch