Nagios restart mucks with service check schedule
Robert Nelson
rnelson at windchannel.com
Mon Nov 1 23:48:39 CET 2004
Ted,
Well, that's a good fix I guess, except for the part where I will have
to adjust that every time we add new services. Ugh. That really sucks :/
Rob Nelson
Network Engineer
Windchannel Communications
919-538-6326
> -----Original Message-----
> From: Tedman Eng [mailto:teng at dataway.com]
> Sent: Monday, November 01, 2004 4:53 PM
> To: nagios-users at lists.sourceforge.net
> Cc: Robert Nelson
> Subject: RE: [Nagios-users] Nagios restart mucks with service
> check schedule
>
>
> Recalculate your nagios.cfg file setting for service
> inter-check-delay.
> Don't use the 's'mart setting in this case. To accomodate
> the heavy 1st
> minute, you may need to adjust other related values such as
> max_concurrent,
> etc.
>
> Your new formula:
> Take 1 minute divide by # services, use result as your
> inter-check-delay.
>
> Refer to docs for more information about service check
> scheduling theory.
> http://nagios.sourceforge.net/docs/1_0/checkscheduling.html#in
> ter_check_dela
> y
>
> Example:
> 10 services
> inter_check_delay = 6 sec
> (all checks will complete within first minute. After that,
> each uses its
> defined interval in rescheduling)
>
>
> Caveats:
> While your startup is now finishing in time, your service
> checks will be
> "clumped", so this may have adverse affects on resources such
> as monitored
> devices, network load, etc. The "clump" will slowly become
> spread out in
> random fashion over time until the next restart.
>
>
>
> -----Original Message-----
> From: Robert Nelson [mailto:rnelson at windchannel.com]
> Sent: Monday, November 01, 2004 11:19 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Nagios restart mucks with service
> check schedule
>
>
> Hey,
>
> I'm using Nagios v1.2 and running into a bit of a problem with
> scheduling. My template specifies 5 minutes for normal checks, and in
> select definitions I've been setting it to 1 minute. Doesn't
> seem to be
> taking that into account on a reload/reschedule, however.
>
> I've got the following services template in use:
>
> # Standard service definition, with standard check options
> define service{
> name standard-service
> active_checks_enabled 1
> passive_checks_enabled 1
> parallelize_check 1
> obsess_over_service 1
> check_freshness 0
> notifications_enabled 1
> event_handler_enabled 1
> flap_detection_enabled 1
> process_perf_data 0
> retain_status_information 1
> retain_nonstatus_information 1
> is_volatile 0
> check_period 24x7
> max_check_attempts 3
> normal_check_interval 5
> retry_check_interval 3
> notification_interval 480
> notification_period 24x7
> notification_options w,u,c,r
> register 0 }
>
> I then have the following service:
>
> define service{
> use standard-service
> host_name westst_cr1.windchannel.com
> service_description Serial3/0
> contact_groups router-admins
> check_command check_iftraffic!Serial3/0
> process_perf_data 1
> normal_check_interval 1
> }
>
>
>
>
> After restarting nagios (service nagios reload), Nagios reschedules
> service checks. For someone reason, this check (and others
> like it) get
> scheduled for up to 5 minutes later, depending on where they
> fall in the
> semi-random scheduling. After that first check is processed, the next
> check is scheduled for 1 minute later. Normally I wouldn't worry about
> it, but I'm processing performance data on this service too.
>
> Is there any known issue with service check scheduling I
> should be aware
> of, or a way around it?
>
> Rob Nelson
> Network Engineer
> Windchannel Communications
> 919-538-6326
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Sybase ASE Linux Express Edition - download now for FREE
> LinuxWorld Reader's Choice Award Winner for best database on Linux.
> http://ads.osdn.com/?ad_idU88&alloc_id065&op=click
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nagios-users
> ::: Please include Nagios version, plugin version (-v) and OS
> when reporting
> any issue.
> ::: Messages without supporting info will risk being sent to /dev/null
>
-------------------------------------------------------
This SF.Net email is sponsored by:
Sybase ASE Linux Express Edition - download now for FREE
LinuxWorld Reader's Choice Award Winner for best database on Linux.
http://ads.osdn.com/?ad_idU88&alloc_id065&op=click
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue.
::: Messages without supporting info will risk being sent to /dev/null
More information about the Users
mailing list