Nagios Support Forum

Hello, monit_burb . Flood of emails without a reason often points to a database corruption. Please run the following command to check mysql tables: mysqlcheck -r -f -uroot -pnagiosxi --all-databases This command works great to truncate outgoing mail entries in the database: echo "truncate table...

bbackstrom , How long have you had the Mod Security on this server? Is this something you implemented just recently? [Thu Nov 08 17:00:39.230422 2018] [:error] [pid 15139] [client 127.0.0.1] ModSecurity: Access allowed (phase 1). Pattern match "^127\\\\.0\\\\.0\\\\.1$" at REMOTE_ADDR. [fi...

@parweez, I don't have a dell poweredge server in the lab. But looks like Dell Troubleshooting Tool might help with SNMP debugging. I might be wrong. The only other way is to check in the owners manual:
https://www.dell.com/support/article/us ... ol?lang=en

bbackstrom , Here's how to access it. Untitled.png Could you also send in your Nagios XI System Profile so I can review it? To send us your system profile. Login to the Nagios XI GUI using a web browser. Click the "Admin" > "System Profile" Menu Click the "Download Profile&...

Hello, @Bertie. Most often this is a networking issue. Next time when this issue happens run the traceroute command to see where the packets are getting lost.

traceroute xx.xxx.xx

Where xxx is the IP address of the failing host.

Hello, @bbackstrom. Have you updated XI recently? What version of XI is that? If you have google chrome right click on the placeholder, choose the Developers Console and look for the errors.

@vy3734, No problem. Are we good to lock this thread?

@parweez, Sometimes flooded network causes issues where communication between two servers will come in and out. Or the monitored server might be getting overloaded and stops responding to SNMP queries. I'd try to turn on the SNMP debugging on your Dell server and look for any errors.

parweez , Is this an snmp based check? These timeouts could indicate either a very slow response from the server or some kind of networking issue. I'd start by increasing the timeout value for this check from 60 to 120 seconds and see if the errors go away. You'd also need to increase the timeout i...

Hello, @vy3734. We don't officially supply RPMs for the NRPE. But you can still find them online made by third parties. Epel and rpmfusion repos should have some NRPE RPMs as well.