fs.suid_dumpable for MySQL Governor IO limits operation

Issue

fs.suid_dumpable should be = 0 or 1 to make MySQL governor 's IO limit work properly?

Environment

• Cloudlinux OS
• Governor

Solution

There's no need to enable (set to 1) the option on any of modern systems since the needed by Governor access to IO files should be granted by kmodlve.

Governor's installer can automatically set "suid_dumpable=1" on old systems where low-privilege processes like "mysqld" can't read their own IO counters.

The old systems in this regard are the following:

• for CL7 kernel this is kernel v. 1.5-26.7;
• for kmodlve - v. 2.0-12.