Article ID: 117520, created on Sep 26, 2013, last review on May 10, 2014

  • Applies to:
  • Virtuozzo hypervisor


I start vzbackup from the remote node and get an error:

ssh: connect to host port 22: Connection timed out
2013-09-11T15:48:27-0600 vzbackup(901073): Error: unable to obtain vzbackup version on

However, when I run vzbackup locally - backup created successfully.


The reason is incorrect work of the dns-server, so hostname cannot be resolved to ip.


You need to reconfigure dns-server.

As a workaround you can perform the following steps:

  1. Setup rsa-keys on the both Source and Backup Nodes;

  2. Add this keys to the /root/.ssh/authorized_keys on the both Nodes;

  3. Modify /etc/hosts on the both Nodes: add on the Source Node <ip_Backup_Node> <hostname_Backup_Node> and on the Backup Node - <ip_Source_Node> <hostname_ Source_Node>

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