On Tue, 28 Feb 2006, [EMAIL PROTECTED] wrote:
greetz,
i have successfully installed nagios-2.0b4p0-chroot and its related packages,
nagios-plugins-1.4.1 and nagios-web-2.0b4-chroot, on my home firewall/VPN
gateway that's running openbsd-3.8 release. i'm starting simple and doing a
check_ping on all my local machines (10.9.0/24 and 10.9.1/24 subnets), which is
working great and i can see their status under the nagios web interface. now
that i have check_ping working for my local machines, i want to do the same for
hosts at my remote location (10.0.0/24 and 10.0.1./24 subnets) that are under
the same VPN.
however, i am not able to check_ping for 10.0.0.1, the remote VPN gateway, even
though i'm able to ping it from my home VPN gateway. since my home VPN gateway
has both a public IP, x.y.z.w, and a private IP, 10.9.0.1, i have to issue a
"ping -I 10.9.0.1 10.0.0.1" to ping the remote VPN gateway via the VPN,
otherwise the interface address transmitted falls outside my VPN subnet
(10.9/16) and the ping doesn't get routed through the VPN. i changed the
ping_syntax variable in cgi.cfg from "/bin/ping -n -c 5 $HOSTADDRESS$" to
"/bin/ping -I 10.9.0.1 -n -c 5 $HOSTADDRESS$" to try to remedy the problem, but
it hasn't done the trick.
just to be clear, here is an text rendering of the situation:
######################### #############################
# home VPN gw # # work VPN gw #
# pub. IP = x.y.z.w #--internet----# pub. IP = a.b.c.d #
# priv. IP = 10.9.0.1 # # priv. IP = 10.0.0.1 #
# VPN for 10.9/16 # # VPN for 10.0/16 #
######################### #############################
am i not supposed to run nagios on such a gateway? i could move it to another
machine behind the gateway at home, but i would rather not for computing
resource reasons. any suggestions on how to successfully check_ping in this
situation would be appreciated. thx for reading.
cheers,
jake
First off - thanks for a concise and detailed problem statement.
I would like to point out that if both lan segments are in different
address blocks, -I should not be necessary. The route table on the
gateway should be correctly populated.
ie. home vpn gateway should have a 1 hop route to work and a 1 hop route
to ISP gateway.
What is the output in Nagios (visible output)
Remedies:
Try a shell wrapper and capture the ping exit code. and use that as the
wrapper's exit code.
--
-sg
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