Nagios uses check_ping for the host check of most hosts.
The check is configured to send only one ping.
So if Nagios receives a response, it is 0% packet loss.
If no response, it is 100% packet loss.
# 'check-host-alive' command definition
define command{
command_name check-host-alive
command_line $USER1$/check_ping -H $HOSTADDRESS$ t 45 -4 -w
3000.0,100% -c 3000.0,100% -p 1
}
Yet, Nagios reports:
p...@bway2852-3-1.net.columbia.edu:2009-06-30 23:24:33:PING
OK - Packet loss = 85%, RTA = 47.06 ms
How is it possible for Nagios to lose 85% of one ping?
--
Cordially,
Shadhin Rahman
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