I've always thought that there might be a way to do this using nmap. nmap is a port scanner that can check hosts w/o using a ping, if you use the -P0 option. I haven't tried it enough to get it to output what BackupPC expects to see, but I imagine that it could be done with the right combination of commands, or with a script.
nmap -P0 -p 22 hostname That command would tell you if port 22 is open on machine "hostname". If port 22 is open, then the machine is obviously up, regardless of whether it responded to a ping. I think the trick will be getting the nmap command to produce output that BackupPC will accept as a positive indication of the host being up. Let me know if you figure it out. -Rob Toni Van Remortel wrote: > Hi all, > > As most of my systems in the backup are not responding to 'ping', I've > set the $PingCmd to /bin/true (as documented). > The problem now is, that when a system is down, BackupPC still gets > successful ping's and tries to backup the system. After a while, the > blackout period is reached, and backup attempts stop (because of > successful ping's). But I want the system to be in the backup when the > system is up again (mostly I fix the issue in the morning, so my current > solution is to start a manual backup). > > Is there another option for the $PingCmd to use? An SSH check from the > Nagios project? An SMB check? > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
