Nagios xi performance issue

[vuduops]

Support;

We are currently seeing high cpu load and memory usage on our current nagios-xi centos kvm. We currently have 10 cpu's and 16 GB memory assigned to the servers.But we are still seeing high load and memory usage even after provisioning more than the recommended CPU and Memory resources. I have attached the screen shot of the total services and host checks running on the system.

can you please let us know how can we resolve this issue as we are seeing "Unable to connect to DB " on the browser from time to time.

Thanks
Srikrishna

[scottwilkerson]

A couple suggestions.

One common bottleneck in Nagios XI system is disk speed, and this will cause high load and slow performance. Ideally you would be using a fast disk array and/or SSD drives.

If you have not already done so, I would suggest you follow the following doc
https://support.nagios.com/kb/article/n ... os-xi.html

This also has more suggestions
https://support.nagios.com/kb/article/n ... os-xi.html

Finally, if you are getting "Unable to connect to DB" messages, you may have to boost the max-connections in /etc/my.cnf

under the section

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[mysqld]

add

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max-connections=500

and then restart mysqld

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service mysqld restart