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