- Series: Certification Guide
- Hardcover: 1008 pages
- Publisher: Pearson IT Certification; 1 edition (September 18, 2015)
- Language: English
- ISBN-10: 0789754053
- ISBN-13: 978-0789754059
- Product Dimensions: 7.6 x 2.1 x 9.2 inches
- Shipping Weight: 4 pounds (View shipping rates and policies)
- Average Customer Review: 58 customer reviews
- Amazon Best Sellers Rank: #120,310 in Books (See Top 100 in Books)
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Red Hat RHCSA/RHCE 7 Cert Guide: Red Hat Enterprise Linux 7 (EX200 and EX300) (Certification Guide) 1st Edition
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About the Author
Sander van Vugt is an independent Linux trainer, author, and consultant living in the Netherlands. Sander is the author of the best-selling Red Hat Certified System Administrator (RHCSA) Complete Video Course and also of the Red Hat Certified Engineer (RHCE) Complete Video Course. He has also written numerous books about different Linux-related topics, and many articles for Linux publications around the world. Sander has been teaching Red Hat, SUSE, and LPI Linux classes since 1994. As a consultant, he specializes in Linux high-availability solutions and performance optimization. You can find more information about Sander on his website at http://www.sandervanvugt.com .
For more information about RHAT certification and additional resources, visit the author’s Red Hat Certification page at http://www.rhatcert.com/.
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First, I have to give credit where credit is due. This author does a great job at teaching Red Hat practice and theory. We need more of this and don’t often see it modern RHEL books. Most of the literature out there teaches syntax and practical application. This author instead spends more time teaching how and why something works the way it does instead of giving you syntax and every switch out of a man page. This is fantastic and this author is both well-educated and a remarkable teacher. I would turn to this author for answers to technical questions and hold his advice in high regard no questions asked.
If you put that all aside and look at the book as a student, this should be scrapped and worked from the ground-up in my professional opinion.
This book is filled with numerous errors. I understand we are all human (authors included), but the number of spelling, grammatical, and structural errors are far too many to have passed a technical review. As far as Pearson Certification books go, I am very disappointed. I put a lot of trust into Pearson IT Certification books and have used them for the CCNA and CCNP coursework. However, they have let a book not ready for publishing go to print and it does not appear they had enough eyes, reviewers, or technical QA departments look it over. This is not something I expect from them being industry experts.
The author spends a lot of time telling the reader about commands, but doesn’t always tell the reader when to enter a command and when not to. He uses full commands in the middle of sentences and it is often unclear as to whether you should try them or not. So, many of the commands fail because he is merely talking about them when he really isn’t expecting you to enter them.
Next, there are too many spelling errors. For example, there is an entry in the section about user authentication where he tells you to install the ‘sshd’ package when he really means the ‘sssd’ package. While a professional may understand what he “means” and be able to adjust accordingly, a beginner might not. This will most certainly lead to frustration.
The virtual machines that are available for download do not work as he states they do. There is a virtual machine that should have IPA installed and ready to go, and two machines that act as servers (in their own right) but clients to the IPA server. After downloading the IPA virtual machine, I noticed that some of it is installed and configured and some of it is not. A beginner will not know what to go look for and add to it to make it a working server. As a trained engineer, I even struggled to find out what he installed and what was missed. It actually took several hours to make the IPA server a working server.
Finally – the entire education on LDAP, IPA, and user authentication is broken in this book. IPA and identity management is a big concept for the RHCE (Red Hat Certified Engineer) certification. He has an appendix that teaches the user how to download, install, and configure an IPA server. This is great because people need to know how to do this. However, the appendix instructions need several adjustments in order to get it to work. He is missing a package in the instructions that is needed for DNS to work and some of the steps are out-of-order.
Chapter 6 (RHCSA section) instructs the user to connect to that IPA server and there are several problems. First, after it is all said and done, the connection to the IPA Server using NSLCD doesn’t work. Second, there are two users that need to be set up on the IPA server before you start chapter 6, but then after you set them up, chapter 6 asks you to connect to that server and change to a user that doesn’t even exist. He also asks you to create a user that was already set up in the appendix, so essentially you are trying to create a user that already exists. There are even screenshots in the section that aren’t even the screen you are supposed to be looking at.
Chapter 25 (RHCE section) attempts to connect to that same server using SSSD, and several things break in the process. It takes a trained expert to be able to identify those problems and fix them while reading his instructions.
When you put all these chapters together, the entire subject of external authentication (LDAP, Kerberos, SSSD, NSLCD, DNS) does not work. There are several chapters that each has a piece that relies on another piece, and they are all missing something. If you are a beginner and wish to learn about external authentication, you need to know that the entire book is broken. From cover to cover, the entire subject of authentication is broken. You will spend more time with heartache then you will learning the practical steps needed to become an expert in external authentication.
As somebody who is Red Hat certified, I have spent two weeks with the various chapters dealing with LDAP, IPA, and authentication in general. Overall, I have not been able to get anything working correctly the way the author states to do it. IPA is sensitive anyway. It has several moving parts and when one of them doesn’t work, the whole concept suffers. This only adds to the fact the Red Hat Enterprise 7 is quirky anyway and has more downsides than it does positives (but that is personal opinion). When you add a book full of mistakes to a touchy operating system and an identity management system that seems to fail more than it works, it makes for a difficult time for a student
I hate to say this, but after reading two books about Red Hat 7 and finding them both unteachable, the only literature I would put faith into is that directly from the Red Hat Corporation. Unfortunately, most people cannot afford $3,000+ dollars on the coursework to get firehose training for 4 days. I understand books from Amazon are the economical solution, but you must research what is out there before you make a decision. Unfortunately, this one is worse than the first book that came out.
Please understand that these are the opinions of one person. I am an IT Manager. I am an Engineer. I am a Developer. I am a practitioner. And, I am always a student. However, after looking at it from all angles, I absolutely must recommend against this book. I don’t usually hesitate to assist authors with errata. We all write with errata. I write IT documentation for the Department of Defense and I expect people to find flaws with my writing too so that the peer-review process can achieve the highest-quality possible while still allowing for that human aspect of error.
Aside from the complaints, this author has a lot of potential and could be one of the best if he just critiqued his own work and had IT professionals critique it. If there was a complete QA process from infancy to publishing, this could be the one person we have been waiting for to teach the world what they need to know about Red Hat. Being a published book from Pearson IT Certification, I would assume that it had to go through some checks and balances. But once you read it, you will see that it seems to lack a lot of that. In fact, I am speechless when looking at the errors, problems, and failures.
Pushing the mistakes aside, I loved reading about this theory and approach. Unfortunately though, this one just didn’t make it.
To be fair, there is a lot of misinformation out in the world on configuring an LDAP client for RHEL 7. And installing a yum group off CLI is not even straightforward with RHEL 7. So I don't think it is accurate to place 100 percent blame to the author.
I fully understand why Sander points you to the nmtui method as it is easier to remember in a test environment. But without knowing what I will walk into at the exam site, I dont think I can take his advice on that part of the exam.
Aside from the LDAP issue, the VM's off the website are apparently not zipped in a usable format for some. I believe he has addressed that issue already. Personally I think the smart reader will just spin up new ones with KVM since he gives you the requirements for them in the book. Anyone who aspires to survive the certification process should definitely know how to install and use the distro-bundled qemu-kvm tools.
As for the grammatical errors maybe publishers and editors are overwhelmed in the industry I don't know.
To sum it up...the book is obviously useful. But not perfect....BUT..if you wanna be a linux admin you had better know how to work with inconsistency and without a "user's manual".......open source does not work that way.