Since a couple of days we recognised that the communication between server and proxy does not work properly. The OS-performance is fine on proxy and server, but after configuration changes (i.e. moving host to another proxy due to busy poller usage) the proxy receives still the configration and both, server and proxy log this - that's fine.

After a couple of minutes the communication stops. Monitoring the connection table with "sudo watch -tn 0.4 'sudo netstat -np | grep 10051 | egrep -v TIME_WAIT'" shows longer communications and data synchronisation with several proxies but not with the proxy that looses the data.

On the gui you see "last seen" of proxy correctly, but no actual data.

After several restarts of proxy and server it works again.