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Re: Passive checks out of sync with log

Nagios doesn't always log the result of every status check, but it does log the result of every status check where the result is different from the lats time it ran. You might want to look into state stalking.
by eloyd
Thu Oct 03, 2019 3:24 pm
 
Forum: Community Support
Topic: Passive checks out of sync with log
Replies: 6
Views: 476

Re: NRDP Passive host and service definitions - check_dummy

Ram, I will address your note from the bottom up: If i enable the check_freshness by setting it as 1, then the check_dummy will get executed if there is no passive checks arrived within the threshold timing. This is correct. My question is that its defined as "check_dummy!0", i hope it sub...
by eloyd
Fri Sep 20, 2019 5:08 pm
 
Forum: Community Support
Topic: NRDP Passive host and service definitions - check_dummy
Replies: 9
Views: 746

Re: NRDP Passive host and service definitions - check_dummy

If freshness is set to 0, the check will always be "fresh." It's only when it is "stale" that the check_command is executed. So with freshness set to 0, the check_dummy command will never execute and the service will always show the last result it was sent, even if that result wa...
by eloyd
Fri Sep 20, 2019 2:46 pm
 
Forum: Community Support
Topic: NRDP Passive host and service definitions - check_dummy
Replies: 9
Views: 746

Re: NRDP Passive host and service definitions - check_dummy

Passive checks rely on an external process to schedule the check an send the results to Nagios. In your case, using NRDP. The check_dummy command comes in to play when freshness checking is turned on on the Nagios server. Freshness checking says, "if I haven't received a passive result check in...
by eloyd
Fri Sep 20, 2019 10:08 am
 
Forum: Community Support
Topic: NRDP Passive host and service definitions - check_dummy
Replies: 9
Views: 746

Re: correlation

Nagios is not a correlation engine. It can do rudimentary parent/child relationships so that if a router is down, anything on the other side of the router will be considered unreachable, but you can't really do much more than that. If you need to go back in time and look at events for event correlat...
by eloyd
Fri Sep 13, 2019 9:57 am
 
Forum: Community Support
Topic: correlation
Replies: 2
Views: 222

Re: Nagios graphs retention period

First, read this again https://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html#STEP%2C_HEARTBEAT%2C_and_Rows_As_Durations and make sure you understand it all. I mean, really understand it. :-) Second, I've never seen RRA_STEP before but that doesn't mean it doesn't exist. However, it may not be doing w...
by eloyd
Wed Aug 07, 2019 7:16 am
 
Forum: Community Support
Topic: Nagios graphs retention period
Replies: 5
Views: 383

Re: Add duplicate IP Address test to preflight checks

Or search /usr/local/nagios/rw/objects.cache for dupes.
by eloyd
Tue Aug 06, 2019 5:21 pm
 
Forum: Community Support
Topic: Add duplicate IP Address test to preflight checks
Replies: 5
Views: 448

Re: printf "%b" in notification command definition

From the man page for printf: %b ARGUMENT as a string with '\' escapes interpreted, except that octal escapes are of the form \0 or \0NNN One could argue that this is so you can pass in arbitrary "blobs" (hence, "b") of data that don't get interpreted as further \-codes. So, basi...
by eloyd
Tue Aug 06, 2019 7:42 am
 
Forum: Community Support
Topic: printf "%b" in notification command definition
Replies: 3
Views: 381

Re: Add duplicate IP Address test to preflight checks

If this gets added, it must be a warning, not a failure. We often use the same IP address on different machine names specifically for testing and/or doing complicated service dependencies.
by eloyd
Tue Aug 06, 2019 7:40 am
 
Forum: Community Support
Topic: Add duplicate IP Address test to preflight checks
Replies: 5
Views: 448
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