tuned: Author a Custom Tuning Profile

MediumRHCSA Prep15-25 min

The brief

Ship a custom tuned profile for this host. Your assignment is in /root/case/assignment.env (PROFILE, PARENT_PROFILE, SYSCTL_KEY, SYSCTL_VALUE, CPU_GOVERNOR).

Create /etc/tuned/PROFILE/tuned.conf that inherits a stock parent, pins a sysctl, and forces a CPU governor:

[main]

include=PARENT_PROFILE

[sysctl]

SYSCTL_KEY=SYSCTL_VALUE

[cpu]

governor=CPU_GOVERNOR

Grading reads the profile file (tuned need not be running). See /root/case/brief.txt.

What you'll do

Create a custom tuned profile directory + tuned.conf
Inherit a stock parent profile via include
Pin a kernel sysctl in the profile
Force a CPU frequency governor

Hands-on lab: you work on a real Linux box in your browser, graded on the machine's actual state.