isoLayer (Synthetic)

Prerequisites

You need a NFS server with storage with XFS filesystem to properly configure isoLayer Backup Destination in DPX vPlus.

Preparation

1. On NFS server we need to create NFS share, for example:

   mkdir /NFS

2. Edit file /etc/exports to add access to this share:

   /NFS SBR_NODE_IP(rw,sync,no_all_squash,no_root_squash)

   Where SBR_NODE_IP is IP of DPX vPlus Node, which will have access to this share

3. Generate new SSH keys, without any password:

   ssh-keygen 
   Generating public/private rsa key pair.
   Enter file in which to save the key (/root/.ssh/id_rsa): 
   Enter passphrase (empty for no passphrase): 
   Enter same passphrase again: 
   Your identification has been saved in /root/.ssh/id_rsa.
   Your public key has been saved in /root/.ssh/id_rsa.pub.
   The key fingerprint is:
   SHA256:H2NJwORiG3oJDm78sKEx4EuOzIm13vUsJ6NfMOPVgt0 root@vpro43-vmware
   The key's randomart image is:
   +---[RSA 3072]----+
   |       oo        |
   |       ...       |
   |. . . + . .      |
   |oo o + B + .     |
   |ooB o O S E      |
   |B*o* o = + o     |
   |+*o . o . .      |
   | . . .++.        |
   |  . oo.=o        |
   +----[SHA256]-----+

4. Add new public key to /root/.ssh/authorized_keys file

   cat /root/.ssh/id_rsa.pub > /root/.ssh/authotized_keys

5. Copy generated private key (id_rsa) to DPX vPlus Node host

   scp /root/.ssh/id_rsa root@SBR_NODE_IP:/opt/vprotect/.ssh/

6. SSH to DPX vPlus Node and change owner of this file:

   chown vprotect:vprotect /opt/vprotect/.ssh/id_rsa

7. Connect from DPX vPlus Node to NFSs:

   ssh -i /opt/vprotect/.ssh/id_rsa root@NFSs

   accept new fingerprint and exit from remote session

8. Copy last line from /root/.ssh/known_hosts file into /opt/vprotect/.ssh/known_hosts file

9. Configure isoLayer connection. Edit /opt/vprotect/scripts/isoLayer/config file:

   vi /opt/vprotect/scripts/isoLayer/config)
   NFS_HOST=NFS4.2_HOST_IP
   SSH_USER=root
   SSH_KEY=~/.ssh/id_rsa
   NFS_HOST_PATTERN=NODE_IP
   NFS_ROOT=PATH_FOR_MOUNT_POINTS
   NFS_OPTS=rw,sync,insecure,no_root_squash,no_subtree_check

   where:

   NFS_HOST - IP address of NFS server

   NFS_HOST_PATTERN - IP address (CIDR) of NFS server, for example: 10.10.0.0/24

   NFS_ROOT - NFS server share path, where we want to store our backups, for example /NFS/backup

Creating isoLayer backup destination

1. Login into DPX vPlus UI.

2. From menu on the left, select Backup Destinations -> File System.

3. On the right, click Create Backup Destination button and choose isoLayer (Synthetic).

4. In new window:

   • type name for the backup destination
   • select Node Configurations
   • provide backup destination path – this is place, where from DPX vPlus Node perspective, isoLayer will be temporary mount share from NFS server
   • Check if pre and post scripts are active, and correct paths are provided like in example:

   

   • Click Save button

5. Now you can use this isoLayer connection to store your backup.