Good point. I don't know how to implement
host-check-only-on-servicecheck-fail on 2.0. I don't see in the config
that it is supported, from what I read execute_host_checks is a global
do or donot hostcheck declarative.
Is this correct?
/eli
Ludwig Pummer wrote:
I should point out I'm running Nagios 1.3, which will only perform host
checks if a service check fails. I use check_ping and the 30 seconds and
6 seconds numbers were what I passed to check_ping in my
checkcommands.cfg (although it's probable check_ping wasn't waiting the
full 30 seconds, it certainly did wait longer than 6 seconds). It was in
the host template definition that I set max_check_attempts.
If you just want to see whether host checks are the source of your
latency, try temporarily replacing your host check command with a shell
script which does "exit 0". You will of course have to suffer through
more service notifications due to downed hosts.
--
Ludwig Pummer
System Administrator
Copart Auto Auctions
------------------------------------------------------------------------
*From:* Blake Krone [mailto:[EMAIL PROTECTED]
*Sent:* Monday, December 05, 2005 3:14 PM
*To:* Ludwig Pummer
*Cc:* Nagios Users
*Subject:* Re: [Nagios-users] Huge Service Latencies
I have active host checks set to 0 so that they won't actually check
unless a service fails on the host. How do you specify a recheck in
seconds? I thought minutes were all that was allowed.
-Blake
On 12/5/05, *Ludwig Pummer* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
I had large latencies caused by (1) hosts being down and (2) a
host check that took way too long. Nagios will suspend all
service checks while it performs a host check. In my case, the
Nagios config I inherited made 10 attempts at 30 seconds each
attempt before declaring a host to be down, so if one host went
down, the host check took 300 seconds. I typically have 15 hosts
down out of 475. I changed my host checks to 3 attempts at 6
seconds each, and latencies went way down.
--
Ludwig Pummer
System Administrator
Copart Auto Auctions
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
[mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>] *On
Behalf Of *Blake Krone
*Sent:* Monday, December 05, 2005 2:08 PM
*To:* Nagios Users
*Subject:* [Nagios-users] Huge Service Latencies
Service Check Execution Time: 0.10 / 10.04 / 2.175 sec
Service Check Latency: 21.25 / 483.37 / 224.970 sec
Host Check Execution Time: 0.06 / 10.70 / 4.307 sec
Host Check Latency: 0.00 / 529.15 / 5.137 sec
# Active Host / Service Checks: 103 / 236
# Passive Host / Service Checks: 0 / 1
Machine is a P3 733mhz with 128mb ram running
2.6.11-gentoo-r3 kernel and Nagios 2.03b
Any ideas as to why it has such huge latencies?
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