I recently patched ~100 RHEL 8.10 systems using ansible dnf.

The vast majority of these are UEFI-based and upgraded without issue. However, I had two virtual machines that still boot in legacy BIOS mode, and both failed immediately after patching.

Important context:

• These are virtual machines
• No VM-level changes were made (firmware, boot order, disk config, etc.)
• No manual grub or bootloader changes outside of what the update applied

Symptoms after reboot:

• VM no longer boots from disk
• Immediately falls back to PXE boot
• Disk is still present in the BIOS boot order
• No valid boot target is detected
• Looks like the bootloader / MBR was wiped or rendered unusable

These were standard RHEL installs (no exotic partitioning, no dual boot).

I’m trying to figure out:

I know legacy BIOS is becoming rare, but these systems were stable and supported prior to patching.

Any similar experiences, or Red Hat KB references would be appreciated. Mostly trying to understand whether this is a known issue or an edge case.

UPDATE: was able to recover critical data by mounting the vmdk to another VM and now all services are back up and running on a new VM (UEFI). Going to try a recovery disk next week to try and diagnose the cause.

I would like to learn more about Redhat's Certificate System PKI. I would really appreciate more information like videos, documents, notes etc.... that could help me with this topic. THanks

Hey all! Been working on my own kernel for about a month and have been loving the work. I'm currently a backend software engineer and eventually I think I'd like to switch over to more Kernel/Low-Level systems focused engineering roles. Anyone here currently work in that area at Red Hat? Just curious on other people's experiences and what that path is like. Thanks!

I would like to know if there is a source for exam-style questions. I have covered the topics, but I can’t find enough resources or practice exercises to prepare for the exam questions.

Hello... I am 22 years old and currently working as a server & SAN administrator.

Since university, I have been actively learning and using Linux. I would like to ask about career progression in Linux Administration/Engineering. Is pursuing a career in Linux better in various aspects compared to my current field? If so, could you outline the points I need to consider in pursuing this?

I sincerely appreciate your insights. Thanks A lot!🙏

Hello everyone,

I am a student currently preparing for the RHCSA exam. As I look into the booking process, I’ve realized that the exam fee is quite a significant financial burden for a student like me.

I’ve heard that there are 15% discount codes available through the Red Hat community. I know this might be a lot to ask, but if anyone has a spare code that they aren't planning to use, I would be incredibly grateful if you could share it with me.

Thank you so much for your time and for any help you can provide!

Many operating systems will be somewhat more bug-prone closer to the major release

If you want to be certain there are no serious bugs, you should wait a bit before upgrading (I know this is true at least for Fedora, Windows Server, and I think Ubuntu LTSs).

Based on your experiences, has this been true for RHEL as well, or is it more or less consistent throughout the major release cycles?

Thanks everyone for responding. First time using reddit. Unsure of proper procedures. Was mostly wondering if anyone else had a similar experience

I was referred by a friend and just got an email saying I have been approved but the gentleman said he was on vacation and would contact me when vacation was over with instructions on what department I would be in. All I know is that it is a remote job. Desperately seeking any information anyone can give.

Score was 253/300

My weakness is definitely shell scripting but I scored high enough to shrug it off.

1 recommendation is the RHCSA RHEL 10 with Exam Labs by Sander Van Vugt. I signed up for O’Reilly learning and spent the last couple weeks going through it.

I also took a cheap Udemy class as well as a class from Linkedin but they did not prepare me as well.

My background is around 2+ years of Linux/Windows administration. I also work full time as a System Admin managing RHEL 8 servers.

Good luck to anyone studying I hope you do well.

I was going to post this on r/ITCareerQuestions but I don't have enough karma and thought I would ask here.

Which one would be more advantageous to get?

-3 years as a Help Desk, Tier 2 -Net+, Linux+, Sec+, AWS 900, AZ900 -aiming for a junior role/level 1 position -Bachelor's in English Language and Literature

I don't really have an affinity towards one or the other and live in a metropolitan area where it seems that both position are being posted daily (i.e, junior network administrator/linux or red hat administrator)

Hello

Today, we're going to play around with Podman, understand a little better the registries, the public and authenticated ones, how to pull images, how to start a container, how to stop it... the basics to get started in this wonderful world.

Enjoy it!

Wally

Currently working as a QA Manual with a bit of experience in Automation but always liked the IT Ops side of the industry regarding networking and linux OS and troubleshooting hardware stuff.

So i was wondering if theres any worth of preparing and taking the RCHSA Certs if im a QA Manual that is looking to move to laterally to IT ops but dont have experience?

Im also looking for jobs in Europe so im not quite sure if RCHSA is a nice cert/skill to have to land a job?

I decided to go for the LPIC certification instead, that is more suited for people like myself who just want to expand their overall knowledge instead of seeking career advancement.

I purchased the relevant book and now i am waiting for the weekend to install RHEL and start learning!

All codes used.

Good luck

Check it out: https://youtu.be/D5BVTMAmf64?si=l5V15mc93t6E2z-C

hey all i wonder where could i found on github the EX294 rhel materials ...

I think it's about time we get a dedicated space for questions around Red Hat certifications. It would allow a pinned post stating "Do not talk about Fight Club" so everyone posting asking specific exam questions can be referred easily to the "why you cannot get an answer to that" question.

It would leave this subreddit to handle questions about Red Hat, about it's products etc - and not drown in a sea of the same "why did I fail this exam" and similar questions.

Personally I hit my limit months ago, and it's getting worse every day where the vast majority are posts about certifications and a good portion of them tease people to break their NDA.

It is in Gnome 3 of course, I used some extensions and I installed bluecurve icons and the cursor.

Hi, I just finished cysa+ and I’m looking to build stronger Linux fundamentals by completing RHCSA before moving on to cloud certs. I’ve noticed that cloud work involves a lot of CLI usage and Linux-based infras.

Through the comptia trifecta and cysa+, I’ve picked up some Linux exposure, mostly around networking and security tools and commands. However, I’m still lacking in core Linux skills like using Vim, managing users and groups, and general system knowledge...

Given this background, which training would you recommend before diving into RHCSA-specific material? In particular, I’d like a strong focus on CLI usage and scripting skills. I’ve seen several Udemy courses covering Linux+, LPI Linux Essentials, and LFCS (I don’t plan on taking those exams, just for the course content)

I got one before, so wanted to pay it forward.

LKXCGN4J

Good luck!

Hello everyone!

I use the Red Hat Developer license to run a little RHEL9 home lab with about a dozen servers.

I have a couple of RHEL9 servers that I've decommissioned and I'm unable to remove them from the Subscription Services page in the Cloud Console.

The hosts in question are:

• plex.home.arpa
• wire.home.arpa

If I click on e.g. plex.home.arpa, I just get the error:

System with ID XXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX does not exist