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

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

KB ID:	2019
Product:	Veeam Backup & Replication
Version:	6.x, 7.x, 8.x
Published:	2015-03-26
Last Modified:	2020-08-13

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Challenge

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

Cause

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.

Solution

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

The following messages were found related to this:
http://unix.stackexchange.com/questions/65774/is-it-okay-to-disable-requiretty
http://serverfault.com/questions/111064/sudoers-how-to-disable-requiretty-per-user

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