1 Prerequisites This skill 2 Unlocked

Skill · Linux · Administer a Linux server

Monitor processes and performance

Watch processes with ps and top, control shell jobs, keep a process running after logout, limit its resources and read load, memory and disk.

Start lesson 1The Linux domain

• 9 lessons
• ~5 h 15 of reading
• 9 quizzes
• 0 proof lab

The path

Where it comes from, where it leads

What you need to know first, where you stand on this skill, and what it opens next. Your status is computed in your browser, from what you have read and passed.

Before · 1 prerequisite

• Manage users, permissions and processes

This skill, for you

Monitor processes and performance

Computing

It unlocks · 2 skills

• Trace the Linux kernel live with bpftrace: choose a probe, write a one-liner and aggregate into counters and histograms
• Plan a fleet's capacity

Lessons

How to learn it

9 lessons, about ~5 h 15, in program order. Each lesson ends with its quiz.

The program

9 lessons · ~5 h 15

Part 1 · Manage processes 6 lessons · ~3 h 25

1. 1Manage processes on Linux· 30 min
2. 2Jobs and job control in the shell· 30 min
3. 3Run a command in the background on Linux· 30 min
4. 4Use nohup to keep a process running· 30 min
5. 5witr: understand why a process is running· 30 min
6. 6Limit the resources of a process with ulimit and systemd· 55 min

Part 2 · Performance and tuning 3 lessons · ~1 h 50

1. 7Diagnose memory on Linux· 30 min
2. 8Assess the performance of a Linux server· 30 min
3. 9Tune system performance with tuned profiles· 50 min

Beyond the lessons

Assess, practise, pass the proof

Reading a lesson confirms nothing. A skill is confirmed by a passed quiz, practised in a guided lab, and put to the test by a challenge or a mission; an imported lab result is not verified by the site.

Assess yourself

9 quizzes

At the end of the lessons: passed at 70%, they confirm the skill.

Practice

3 guided labs

• Set per-user resource limits (open files) with limits.d
• Lower a service's scheduling priority with Nice
• Apply a tuned performance profile

Proof

No proof

Neither a challenge nor a mission with a proof yet.

Around it

Who requires it, who teaches it

Required by

• Linux Administrator
• Site Reliability Engineer
• LFCS
• RHCSA (EX200, RHEL 10)

In red: the certification it prepares for.

Taught by

• Linux Training

Same block · Administer a Linux server

• Automate in the shell and schedule tasks
• Configure and troubleshoot a server's network
• Prepare local storage: disks, partitions, file systems and mounting
• Manage logical volumes, software RAID and disk encryption
• Mount network storage: NFS, SMB and iSCSI
• Maintain a server's software and monitor its resources
• Troubleshoot a Linux server

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