Unable to ping few network devices from Nagios.

[gselvakumar]

Hi Team,

Few devices configured in Prod Nagios server are showing down but the devices are actually UP.We are unable to ping device from the server but device is able to ping the nagios gateway.The device is also pining from the DEV server.PFA for the tracerote output and ping output of the Prod server.

PFB the traceroute output of the DEV server.

Code: Select all

[root@lussvpnagiosdb01 ~]# traceroute 10.40.224.3
traceroute to 10.40.224.3 (10.40.224.3), 30 hops max, 60 byte packets
 1  10.10.83.12 (10.10.83.12)  0.769 ms  0.753 ms  2.604 ms
 2  10.15.3.38 (10.15.3.38)  0.528 ms  0.677 ms  2.525 ms
 3  172.31.0.1 (172.31.0.1)  2.535 ms  2.534 ms  2.531 ms
 4  32.2.216.209 (32.2.216.209)  10.529 ms  10.565 ms  10.564 ms
 5  32.4.200.173 (32.4.200.173)  48.441 ms  48.491 ms  48.466 ms
 6  32.4.200.174 (32.4.200.174)  44.547 ms  44.353 ms  39.687 ms
 7  172.31.1.2 (172.31.1.2)  42.445 ms  42.678 ms  42.802 ms
 8  10.40.224.3 (10.40.224.3)  40.822 ms  40.807 ms *

[rkennedy]

Few devices configured in Prod Nagios server are showing down but the devices are actually UP.

We are unable to ping device from the server but device is able to ping the nagios gateway.

It sounds like your devices are actually not up, because there is no route from Nagios -> your machines. You'll want to have your network team add this route.

The other option, if you do not plan to have this changed, is to assign check_dummy 0 to your host commands that are not pinging properly.