Cisco UCS Log Fullness due to ECC Memory Errors

Greetings, everyone! I recently had a customer who was running into an issue where they were seeing the Cisco UCS System Event Log (SEL) fullness being reported within vCenter Server.

Upon looking at the host’s SEL Logs tab in UCS Manager, we could see that the SEL had filled up due to a significant number of ECC errors on a particular set of DIMMs. Typically, we could just clear the SEL and move on, but I’ve found that following these steps can not only clear the SEL, but may reset the ECC memory error state to help determine if a DIMM truly is flaky.

  1. Open your SSH client of choice and connect to the Cisco UCS Manager.


  2. Log in to UCS Manager. In this particular environment, the customer had to logon using their domain credentials in this format:
    ucs-DOMAIN\USERID


  3. Run these set of commands to connect to the particular blade (if applicable), reset the memory errors, and clear the SEL.

    In this example, connect to Chassis #3, Blade #2:
    scope server 3/2

    Then, reset all ECC memory errors being reported in the SEL:
    reset-all-memory-errors

    Commit the changes to UCS manager:
    commit-buffer

    The next step is to reset or clear the SEL:
    clear sel

    Again, commit the changes to UCS Manager:
    commit-buffer

  4. I believe the last step is optional, but in my experience, it didn’t hurt. Reset the CIMC, just to be safe.
    reset

    As usual, commit the changes:
    commit-buffer

    Doing so will drop any connection to the CIMC for that server (including the SSH session that was established earlier in this post).


  5. Ping or try to connect to the CIMC address after a few minutes to ensure connectivity and remote management.

And that’s pretty much all there is to it! Hopefully you found this post helpful. As always, thanks for stopping by!

VMware vForum Online 2019

If you weren’t able to make it to VMworld US earlier this year, be sure to mark your calendars for Wednesday, October 16th for VMware vForum Online 2019.

What is vForum Online?

VMware vForum Online is a like a mini-VMworld, except that it’s 100% online and doesn’t require all the travel (or travel planning). The day starts with an opening keynote by VMware’s CEO Pat Gelsinger on ‘Tech in the Age of Any.’ Afterwards, there are over thirty (30) breakout sessions to choose from that focus on these three categories: Accelerating Your Cloud Journey, Transforming Networking & Security, and Empowering the Digital Workspace. In addition to the breakout sessions, there are opportunities to chat with fellow VMware experts or choose from a number of related Hands-On Labs. The full agenda can be found here.

My Personal Experience

When it comes to vForum Online, I like to block off my day as if I were heading to a training or other conference event. I set my out of office for the day and find a quiet spot where I can truly attend the online breakout sessions with very little distractions.

Even though I attended VMworld earlier this year, there is A LOT of activity that can pull you away from attending the breakout sessions live and in-person. Sure, they’re recorded, but I find it’s even harder to commit the necessary time to sit down and truly catch up on the sessions I missed or wanted to see. Enter vForum Online.

Although the breakout sessions are streamed virtually, there are still opportunities to ask questions to the moderators and/or presenters. If there isn’t a breakout session that interests you for a particular time slot, head over to the Hands-on Labs and take a test drive of a technology you’ve been meaning to try or learn.

There’s plenty of great content to choose from, too. It’s not all just about Kubernetes, containers, and cloudy things. In looking at the agenda, there are several breakout sessions (and labs) covering vSAN, NSX, vROps, Horizon, Workspace One, Security, and Hyper-converged Infrastructure (HCI).

How Can I Attend?

That’s easy! Mark your calendars for Wednesday, October 16th from 12:00 – 6:00 EDT (UTC -4) and be sure to register using the link below! Even if you can’t make it for the entire day, at least register and attend the one or two breakout sessions that interest you the most. I look forward to seeing you there!

Register here for VMworld vForum Online 2019!

The Times They Are A Changin’

As the Bob Dylan famously recorded back in the early 1960’s, “The Times They Are A Changin’,” and that song has been on replay in my mind over the last several weeks. Personally, the month of August has been an incredible roller coaster of emotions, with several highs, a few lows, and a LOT of nervous moments in between. Let me explain…

The past several weeks have been incredibly busy and quite challenging for me, personally. I’ve been planning and executing a vSphere 6.7 upgrade at work, finalized plans for and hosted the August Pittsburgh VMUG meeting, and I had been finalizing my presentation and other conference activities for VMworld 2019 US. During the first two weekends in August, my wife and I spent the majority of our time refinishing the staircase in our house, as that was planned before all of the other activities hit.

Continue reading “The Times They Are A Changin’”

PowerCLI: Find Host Profiles and Versions in vCenter

As part of our planned upgrade to vSphere 6.7, we needed the ability to quickly scan the various vCenter Servers for host profiles that may be configured for version 5.5 or older. According to the vSphere 6.7 Release Notes, if these older host profiles are found, the vCenter pre-upgrade check will fail.

Continue reading “PowerCLI: Find Host Profiles and Versions in vCenter”

Git with VS Code for Mac: Part 3 – Configuring Git and VS Code

In my previous post, I discussed how to install both Git and Microsoft Visual Studio Code on MacOS. This is the third and final part of my three-part blog series on integrating Git with VS Code for MacOS. In this post, I’ll cover how to configure Git and Microsoft Visual Studio Code to work together to synchronize with GitHub.

Git with VS Code for MacOS blog series:

Continue reading “Git with VS Code for Mac: Part 3 – Configuring Git and VS Code”

Git with VS Code for Mac: Part 2 – Installing Git and VS Code

In my previous post, I discussed how to install Microsoft PowerShell and VMware PowerCLI on MacOS. This is the second part of my three-part blog series on configuring Git with VS Code for MacOS. In this post, I’ll cover how to download and install both Git and Microsoft Visual Studio Code.

Git with VS Code for MacOS:

Continue reading “Git with VS Code for Mac: Part 2 – Installing Git and VS Code”

Git with VS Code for Mac: Part 1 – Installing PowerShell and VMware PowerCLI

Ever since I wrote my blog series Git Integration with VS Code, I’ve been wanting to do a similar series of posts for those of us who primarily run MacOS. While a lot of the similar concepts from that series apply, I still wanted to go through the process step-by-step for those who may be completely new to this concept.

As a VMware administrator, I want the ability to write or update my PowerCLI scripts on GitHub from whatever system I have with me. Sometimes it may be my corporate-issued Windows device, and other times it might be my personal MacBook Pro. Regardless, I want to be able to synchronize my work on both systems and platforms. Now that both Microsoft PowerShell and Visual Studio Code are available on both platforms, I can work on either platform at any time and pick right up where I may have left off.

Continue reading “Git with VS Code for Mac: Part 1 – Installing PowerShell and VMware PowerCLI”

My Personal Goals for 2019

So… I’m REALLY behind in getting this post published! Last year, I my “Goals for 2018” post was written and published by the 2nd week of January. This year, however, I’ve clearly fallen behind in getting this post out to the world. (BIG ‘Whoops’). It’s been in a draft state since mid- January, but I never took the time to sit down and put the rest of the post together. But, better late than never I suppose.

Last year, I missed the mark on a few of my goals, and I hope this post continues to serve as a reminder of what I hope to accomplish this year. As a matter of fact, because I waited so long to get this post published, I’ve actually accomplished two of the six goals listed, already. Continue reading “My Personal Goals for 2019”