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Restarting Zmanda Linux Client Services

In some rare cases, when there are recurrent connection problems with the server, the client services can go into a stale state. This can cause the backups to fail with a connection reset error.

This article is for the 4.0, 4.1, and 4.2 versions. 

Analysis:

The connection between the Zmanda server and the client is controlled through two services.

__sub-amanda-client.socket 
__sub-amanda-zmrecover.socket

These two services are listening on ports 10080 and 10081 respectively.

You can view the services by checking their status using 'systemctl' command.

systemctl list-sockets | grep amanda

If the services are not active, you will get connectivity errors while doing a host check from the server or during the backups.

The error messages would be similar to the one shown below. 

Xrecv: connection reset by peer

To restart the client services, run the following commands as the root user.

systemctl restart __sub-amanda-client.socket
systemctl restart __sub-amanda-zmrecover.socket