Hi there,
On Fri, 19 Jul 2024, Johnny PINSON wrote:
I'm facingan issue and would request some help please.
All computers at work are using backuppc, whether running linux, macos
and windows and it works fine but two servers are having problems :
- I can log on those computers from server doing backup
- but their backup fail with this message :
Timeout, server XXX not responding.
The fact that you can ssh into the problem computers only tells you
that they are reachable over the network and that packets for the SSH
protocok (likely on port 22) are accepted, and that the server replies.
It doesn't tell you what is happening to packets for all the other
protocols (both TCP ports and UDP ports) which may be being used.
Have you got ideas please? 1What should I look for / change?
I don't think you should jump right in and start changing things until
you know what the problem is. As Michael S says, you can start by the
simplest of checks which is 'ping'. This simply sends a packet to the
target machine, and all the packet asks for is a response. The 'ping'
utility shows you that there's a response. It's probably the first,
and simplest, thing to check. BackupPC uses ping to check that there
is a host listening for the connections it needs to make in order to
back up that host's data.
If you don't get a ping response then you want to know why not. Are
you running firewalls on the problem servers? If you are then simply
disabling them might get thigs working and you can take it from there.
A firewall will obviously need to permit the appropriate connections
from the backup server so that it can get the data it asks for.
There are other things you might need to check. Depending on the kind
of data transfer you've set up between the server hosts and the backup
machine you need to ensure that the relevant connections are possible.
See the comments in config.pl for this configuration variable:
$Conf{XferMethod}
Bear in mind that this can be overridden by the configuration for an
individual host.
If all else failed I would check things like this with a tool like
Wireshark, and I would recommend it to you as a way of finding out
what's going on for help with any issues in the future, but maybe if
you post your BackupPC configuration here we could save you a bit of
time troubleshooting.
Have these two problem hosts been backed up successfuly at any time?
--
73,
Ged.
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