Nagios Support Forum

Running Nagios XI 5.6.14. The hosts performance graphs for about 95% of all the hosts which are Windows servers will contain time gaps in tracking all 4 items (rta, pl. rtmax, rtmin). The time gaps are not consistent across the systems. I adjusted the settings per the recommendations, but they still are occurring. The non-windows systems (AIX and Linux) do not contain time gaps. Based upon the graphs going back for 365 days, it looks that has always been occurring, but we just noticed it while working a performance issue of a server. There are no time gaps occurring on the services performance graphs.

Please PM me a profile so that I may review the configuration and logs.

The profile can be generated under Admin > System Config > System Profile > Download Profile, or from the command line with:
The profile is then saved to:

/usr/local/nagiosxi/var/components/profile.zip

Profile posted to PM

I don't' see anything in the data that would suggest there would be a problem getting perfdata for just the Windows hosts. It looks like a majority of the host checks are using the check_xi_host_ping command which uses a simple system ping to check a host. Perhaps a Firewall or security device like an IDS is preventing ICMP ping traffic? Are the AIX and Linux machines on a separate subnet from the Windows machines? Are you receiving any notifications that hosts are going down? Check the notification log under Home > Incident Management > Notifications.

Do you have rrdcached in place? I used to get gaps all the time until I implemented that.

Steve B

Steve, no we do not have rrdcached in place. Is there a document on putting this in place?

I have installed the rrdcached and will check to see if this resolved the issue.
Steve thanks

It sounds like you've found it, but if anyone else needs a link, here it is:

https://assets.nagios.com/downloads/nag ... ios-XI.pdf