cert.astropema.ai · in development

Break it.
Fix it. Prove it.

Hands-on Red Hat Enterprise Linux practice labs. Each lab hands you a real, broken system to diagnose and repair — then a script checks the result. No multiple choice. No answer key to memorize. You fix the actual machine, and the machine tells you if you got it right.

oba@rocarhel:~/labs
./verify.sh --suite rhcsa
configure httpd + firewalld service[ PASS ]
relabel web content for selinux[ PASS ]
add user to supplementary group[ PASS ]
lvm volume — create, format, mount[ PASS ]
persistent firewall rules survive reboot[ PASS ]
cert.astropema.ai practice labs[ BUILDING ]
5 passed, 1 in progress

Every lab is graded by the state of the system, not by an answer sheet.

How a lab works

01 · break

Start broken

You’re handed a misconfigured RHEL 10 host — a dead service, a wrong label, a mount that won’t come up.

02 · fix

Repair it live

Diagnose and fix it on the real system, the same way you would in production or under exam conditions.

03 · prove

Verify the fix

A verification script inspects the machine and returns pass or fail. No guessing whether you did it right.