Adding Linux repository to Veeam hangs on volume discovery and fails silently

Veeam Backup & Replication
6.x, 7.x, 8.x
Last Modified:


When connecting to a Linux repository with Veeam, the connection hangs on the volume discovery step and silently errors out. 


When Veeam connects to a Linux target the SSH session is opened without a TTY. In some versions of Linux (particularly recent releases of CentOS such as 6.6. and 7, and RHEL5 and higher), this is caused by RequireTTY being set as a default option in the /etc/sudoers file.


Note: A reboot may be required.
To disable RequireTTY globally:
1. Run visudo
2. Find the line for requiretty
3. Comment it out
To disable RequireTTY for a specific user:
1. Run the command visudo
2. Create a new line Defaults:<username> !requiretty
Where <username> is the Linux username given to Veeam Backup & Replication when adding the NFS repository.

More Information

Please be aware that we’re making changes which will restrict access to product updates for users without an active contract.


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