Arcserve - Invalid SSH key config

When you try to set up a backup on Arcserve, you need to add a target node, and if you encountered this error :

❌ Invalid SSH key configuration.
For more information about configuring the SSH key, see the product documentation.

You can follow the procedure below.

Configure the Private/Public Keys

On backup server

1. Log into your Backup Server as a root user
2. Generate 2 public/private key files named server.pub and server:

   # ssh-keygen -t rsa -f server

3. Copy and rename server.pub and server files to the following location:

   # cp server /opt/Arcserve/d2dserver/configfiles/server_pri.key     
   # cp server.pub /opt/Arcserve/d2dserver/configfiles/server_pub.key 

On node server

1. Log into your node (the client)
2. Check or add the content of server_pub.key in the /root/.ssh/authorized_keys file

Documentation

https://documentation.arcserve.com/Arcserve-UDP/available/7.0/ENU/Bookshelf_Files/HTML/UDPLUG/Content/AgentforLinuxUserGuide/udpl_configure_private_public_key.htm