[Hosting HPC in Azure] 4.1 -- NFS Server using Azure NetApp

How to Launch a NFS Server using Azure NetApp?

1. Azure Portal -> NetApp -> Create Account

2. NetApp -> Capacity pools -> Add capacity pool

   • A capacity pool may hold numerous volumes, which is the actual volume that will be mounted in the cluster.
   • The smallest resize unit in capacity is 1 TB.

3. VNet -> Subnet -> Add

   • Make the subnet inside the VNet where CycleCloud and clusters reside.

     Form	How to
     Subnet purpose	Default
     Size	/24
     Subnet delegation	Microsoft.NetApp/volumes

4. NetApp -> Volumes -> Add
   • Choose the VNet and subnet.

   • Protocol:

     Form	How to
     Protocol type	NFS
     File path	The name of the volume export. It is related to <export-path>.
     Versions	NFSv4.1

   • Export policy: set the allowed clients from the VNet where the cluster resides. This is optional.
5. Check the mounting instructions in NetApp -> Volumes -> Mount instructions, and get:
   • mount target IP
   • mount options:

     sudo mount -t nfs -o <mount options> <ip-address>:<export-path> <mount-point>
     

6. Go to CycleCloud Wizard and edit cluster:

   • Network Attached Storage, Additional Filesystem Mount:

     Form	How to
     FS Type	External NFS
     IP Address	NetApp volume IP (<ip-address>)
     Mount Point	Where the folder will be at in the cluster. (<mount-point>)
     Export Path	How the NFS exports the file (<export-path>)
     Mount Options	<mount options>

   • Make sure mount point exist and with permission for the user to access and execute cd:

       sudo mkdir <mount-point>
       sudo chmod 755 <mount-point>
     

How to Set Up User Quota and Create Dedicated Folder

User Folder

sudo mkdir <user>
sudo chown <user>:<user> <user>
sudo chmod 750 <user>

User Quota

1. NetApp -> Volumes -> User and group quotas.

• Check user UUID:

  id -u
  

1. Check that oversized creation of files are banned:

   • Create a output.dat with file size 2M.

       dd if=/dev/zero of=output.dat  bs=2M  count=1
     

How to Resize Volume

1. NetApp -> Volumes -> Resize.

   • The resize value should be between the value used during creation and the capacity.

2. Check if the volume size reflects correctly in the node:

    df -h <mount-folder>