On Tue, 8 Apr 2008 12:50:01 +0200 Heiko Schlittermann <[EMAIL PROTECTED]> wrote:
> I've a list of hosts, these hosts are not available for ping, but > normal service checks (SSH, SMTP, ...) work. Nagios reports theses > hosts beeing down! Ugly! > > If I remember well, older nagios versions "knew" that's enough to see > one service on a host to know this host has to be up. Not sure if it's available in 3.x (we're still happily using 2.x here!) however we use ssh as our check-host-alive command for the reasons that you've listed above (we block most if not all ICMP traffic to our hosts unless it's specifically required.). A connection is initialised via ssh and if that works, the host is deemed to be up. We also use NRPE to check that sshd is running so if the host appears as down however the all the services apart from sshd are up, we know that it is most likely an issue with sshd, not the server. Hope this helps, Matt -- |Matthew Macdonald-Wallace |Tiger Computing Ltd |"The Linux Specialists" | |Tel: 0330 088 1511 |Web: http://www.tiger-computing.co.uk | |Registered in England. Company number: 3389961 |Registered address: Wyastone Business Park, | Wyastone Leys, Monmouth, NP25 3SR ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null