Book · 2016
The Practice of System and Network Administration
by Thomas A. Limoncelli
Thomas Limoncelli's field manual for the sysadmin who wants to stop firefighting and start running a shop that doesn't wake them up at 3 a.m.
What does Reddit think of The Practice of System and Network Administration?
The community treats it as the go-to Limoncelli recommendation alongside its companion volumes: the Cloud System Administration book and Time Management for System Administrators get named in the same breath, often by commenters pointing newer sysadmins toward a reading list. The ↑45 comment is the clearest statement of what the book is for: document everything, don't make changes before understanding what you're changing, and expense this to work on day one. Sentiment runs broadly positive across the tracked years, though that reflects the book's status as a consensus pick rather than a contested one — nobody argues against it, they just recommend it and move on. The highest-upvoted citations (↑198, ↑58, ↑57) show up in 'what should I read' threads where it appears as a matter-of-course entry. Activity held steady from 2019 through 2025, with 4 mentions in 2025 after a quiet 2024.
Community feedback & reader fit
Themes
- · Enterprise IT operations and best practices
- · DevOps and SRE principles for sysadmins
- · System and network administration fundamentals
- · Career development for IT professionals
- · Operational maturity and process improvement
Common praise
- + r/sysadmin regulars drop it into reading lists without qualification, suggesting it earned its reputation the hard way.
- + The Limoncelli authorship consistently draws a +1 from commenters who've read multiple books in the series.
- + Gets recommended alongside infrastructure fundamentals like the CCNA cert books, which signals the community puts it in the same tier of foundational material.
- + Shows up unprompted in containerization and career-path threads, meaning readers connect the principles to problems well outside the book's literal scope.
Common criticism
- − Some list-style recommendations include it alongside discontinued cert material, hinting that parts of the coverage may lag current tooling.
- − All 24 mentions are from r/sysadmin with no crossover to cloud-focused communities, suggesting its cloud infrastructure coverage doesn't satisfy readers working primarily in those environments.
Who it's for
You're a sysadmin who learned the job by doing it and suspects there's a more systematic way to think about what you actually do all day. This is the book for that. It's also worth picking up if you're moving into an enterprise IT role from a smaller shop and want a framework for how large-scale operations are supposed to work. Readers who've already worked through Time Management for System Administrators will find this covers the operational side of the same professional picture. If you're purely a developer who occasionally touches infrastructure, the fit is probably loose — r/sysadmin cites it in admin-specific reading lists, not general engineering ones.
Mentions over time
Top subreddits
Which Reddit comments matter for The Practice of System and Network Administration?
Top-upvoted quotes across the subreddits where this book is mentioned. Click through to read the full thread.
“First of all you should decouple the the idea of containerization from docker. Docker is not what it once was in terms of market penetration and pretty much everyone is moving away from docker to different containerization tooling. As to your actual question: It depends on what you consider "old-t…
“It's not insane... but it's not ideal either. SELinux didn't launch until 2000, and that's a pretty significant change in Linux fundamentals. ----- Nerd Books: [Cisco CCNA Certification, 2 Volume Set: Exam 200-301](
“Author: Thomas A. Limoncelli Books: * Practice of System and Network Administration, The: DevOps and other Best Practices for Enterprise IT, Volume 1 3rd Edition * Practice of Cloud System Administration, The: DevOps and SRE Practices for Web Services, Volume 2 * Time Management for System Admi…
“Document everything. Don't make changes before understanding what you are changing (or at least how to revert). Grab a copy of The Practice of System and Network Administration, Second Edition, expense it to work…
“The Practice of System and Network Administration.
“Time Management for System Administrators by Thomas Limoncelli. There is also The Practice of System and Network Administration by Limoncelli and others. Finally I highly recommend The Subtle Art of Not Giving a F*** by Mark Manson.
“The Practice of System and Network Administration, Volume 1. [](
“>The Practice of System and Network Administration \+1 for Thomas Limoncelli
Convinced? Pick up The Practice of System and Network Administration
Readers also mention
Books that share discussion threads with The Practice of System and Network Administration — counted from the comments, not curated.
The Practice of Cloud System Administration
Thomas A. Limoncelli
Limoncelli's Volume 2 on running large distributed web services, the one r/sysadmin keeps listing right next to Volume 1 and rarely talks about on its own.
Network Warrior
Gary A. Donahue
Gary Donahue's field manual for the network engineer who inherits a closet full of Cisco gear and has to keep packets moving by Monday.
The Practice of Network Security Monitoring
Richard Bejtlich
Richard Bejtlich's field manual for catching intruders by watching the wire, built around Security Onion and the assumption that prevention will fail.
Practical Packet Analysis
Chris Sanders
Chris Sanders walks you through Wireshark captures of real attacks, slow networks, and broken handshakes until the protocol stack stops being abstract.
TCP/IP Illustrated, Vol. 1
W. Richard Stevens
W. Richard Stevens wrote 24 Reddit-cited pages per year's worth of networking protocol detail so you'd stop guessing what's on the wire.
Time Management for System Administrators
Thomas A. Limoncelli
A sysadmin who can't ignore his phone reads the one book r/sysadmin keeps recommending to people who are burning out.
The Practice of System and Network Administration — frequently asked
What does Reddit actually think of The Practice of System and Network Administration?+
Broadly positive, in the way a reference book earns quiet approval rather than enthusiasm. All 24 mentions are in r/sysadmin, where 21 different commenters cite it — mostly in reading-list threads. Nobody argues against it. The highest-upvoted references (↑57, ↑45, ↑42) just drop the title and move on, which in r/sysadmin is a form of endorsement.
Is The Practice of System and Network Administration still relevant in 2026?+
Probably yes for the principles, with caveats on tooling. The r/sysadmin thread with ↑198 upvotes that mentions it opens by decoupling containerization from Docker — exactly the kind of conceptual framing the book pushes. Four mentions appeared in 2025, suggesting practitioners still find it worth citing even as specific tools shift underneath the practices.
How does The Practice of System and Network Administration compare to Limoncelli's other books?+
r/sysadmin treats the Limoncelli books as a matched set. The ↑57 comment lists this volume, The Practice of Cloud System Administration, and Time Management for System Administrators together as a progression. The consensus read seems to be: Time Management for day-to-day habits, this volume for enterprise operations principles, and the Cloud book for SRE/web-services work.
Should I read The Practice of System and Network Administration if I'm new to sysadmin work?+
Yes, with company. r/sysadmin lists it alongside cert-track material like the Cisco CCNA books, suggesting the community sees it as foundational rather than advanced. The ↑27 comment recommends it to someone clearly building a reading list from scratch. Pair it with Time Management for System Administrators if you want the full Limoncelli curriculum that the sub keeps returning to.