How can I get online monitoring of the load on the VDS server?

Question

Network administration

Hi all.
There is the following task, for unknown reasons, the server starts to stall and MYSQL crashes, restarting the service does not always even help, you have to restart the server.
Machine CentOS-7-amd64-ispmgr5
Not enough to see the load, suppose by CRON
Files that take a long time to process a php script
Load on MYSQL
Load on nginx
How long it processes and the amount of load
Links to which the server responds for a long time
Tell me something desirable with a WEB interface and a big plus will be if in Russian and Free of
charge I will be glad to your advice.

Answer 1

For php ixdebug or pimba
For mysql it has slologs
In general, everything can be screwed into newrelic and look in it