Cisco UCS Release 4.3(4a) Update: PSU view displays Power: Error BUG CSCwj01478

Cisco’s Unified Computing System (UCS) continues to innovate in providing a powerful platform for data center infrastructure, but even with frequent updates, occasional bugs arise. In the recent Cisco UCS release 4.3(4a), a notable issue surfaced with the deployment of the Cisco UCSX-9508 chassis, leading to a power status error in the Cisco UCS Manager (UCSM) interface.

This issue, identified as BUG CSCwj01478, involves PSU view displays Power: Error and Input Source: Unknown in UCSM that do not reflect the actual physical status of the hardware.

Symptom Overview

Users deploying the Cisco UCSX-9508 chassis, integrated with Cisco UCS 6454 Fabric Interconnects (FI) and the Cisco UCS 9108 25G Intelligent Fabric Module (IFM), may encounter the following symptoms:

  • Power Display Issue: In UCSM, the chassis power status shows as “Power: Error” and “Input Source: Unknown,” even though the physical server PSU LEDs are green, indicating normal operation.
  • Persistent Faults: Major faults associated with the power status do not resolve within UCSM, even after attempts to decommission and re-acknowledge the chassis.

While these symptoms do not affect the physical functionality of the power supply, the discrepancy in UCSM’s display can complicate administrative monitoring and fault management workflows.

Summary: As a personal workaround, I set the FAN policy to MAX, which temporarily resolved the issue. However, the release of 4.3(4a) has now provided an official solution.

Links: Release Notes for Cisco UCS Manager, Release 4.3

Recovering ESXi 7.x & 8.x host after forgetting…

Recovering ESXi 7.x & 8.x host after forgetting…

The general guidance and quickest way to recover an ESXi host if you have forgotten or lost the root password is to reset using vSphere Host Profiles if it was managed by vCenter Server or simply reinstall ESXi which would allow you to preserve the existing VMFS volumes along with any workloads [..]


Broadcom Social Media Advocacy

Critical Security Alert: Update to Fixed Version 8.0 U3d Immediately

Urgent Notice from VMware by Broadcom

VMware has announced that the security patches released on September 17, 2024, intended to address CVE-2024-38812, did not fully mitigate the vulnerability. As a result, all customers are strongly advised to update to the latest version, 8.0 U3d, immediately. Patches for the 8.0 U2 line are also available to address this issue.

This urgent advisory applies to all vCenter Server users, as the newly identified vulnerabilities pose a significant security risk. Notably, two critical vulnerabilities were reported in vCenter Server, including a heap-overflow vulnerability and a privilege escalation vulnerability. These have been responsibly reported to VMware, which has now provided updates to address them.

Key Vulnerability: Heap-Overflow in vCenter Server (CVE-2024-38812)

Vulnerability Description:

A critical heap-overflow vulnerability was discovered in vCenter Server, specifically in its implementation of the DCERPC protocol. The issue has been assigned CVE-2024-38812 and carries a CVSSv3 base score of 9.8, placing it in the Critical severity range.

Known Attack Vectors:

This vulnerability can be exploited by a malicious actor who has network access to the vCenter Server. By sending a specially crafted network packet, the attacker could trigger the heap-overflow, potentially leading to remote code execution (RCE) on the affected system.

Why You Should Patch Now

This vulnerability could allow attackers to gain control over your vCenter Server environment, putting your infrastructure at risk for unauthorized access, data breaches, or service disruptions. Given the widespread use of vCenter Server for managing virtual environments, this threat is extremely serious, especially for businesses relying on VMware for critical operations.

Patch Availability

The new patches, which can be found in the Response Matrix, have been made available for both the 8.0 U3, 8.0 U2 and 7.0 U3 versions of vCenter Server. Customers should apply the new patches immediately to ensure their systems are protected.

What to Do:

  1. Check your version: Identify if your vCenter Server version is affected.
  2. Apply the patches: Use the Response Matrix provided by VMware to download and install the necessary updates.
  3. Follow VMware’s best practices: Regularly update your systems, review security advisories, and apply patches as soon as they are released to minimize security risks.

Mount VMware-vCenter-Server-Appliance-8.0.3.00400-24322831-patch-FP.iso to VCSA VM. Log in to the appliance shell as a user with super administrative privileges (for example, root) and run the following commands:

# To stage the ISO:
software-packages stage --iso

# To see the staged content:
software-packages list --staged

# To install the staged rpms:
software-packages install --staged

ESXi on ASUS NUC 14 Performance (Scorpion Canyon)

ESXi on ASUS NUC 14 Performance (Scorpion Canyon)

In addition to the ASUS NUC 14 Pro (which I recently reviewed), ASUS has also released the ASUS NUC 14 Performance (formally known as Scorpion Canyon) as part of their Intel 14th Generation (Meteor Lake) lineup. Compared to the ASUS NUC 14 Pro and Pro+, the ASUS NUC 14 Performance offers […]


Broadcom Social Media Advocacy

Updated Dashboard for VMware Community Homelabs…

Updated Dashboard for VMware Community Homelabs…

While working on some data analysis for an internal project, I was looking for a better way to summarize and provide some visualizations of the raw data for better consumption. I also wanted to automate this process, so that I could easily build reports or dashboards regardless of the […]


Broadcom Social Media Advocacy

Quick Tip – Retrieving vSAN File Share Network…

Quick Tip – Retrieving vSAN File Share Network…

When creating a new vSAN File Share, which is powered by vSAN File Services, additional network access controls (no access, allow access from any IP or custom) can be configured. To view the configured network permissions, users must expand each file share to get the relevant information. For […]


Broadcom Social Media Advocacy

Backup and restore ESXi host configuration data…

Backup and restore ESXi host configuration data…

In some cases we need to reinstall ESXi host. To avoid time consuming setting up servers, we can quickly backup and restore host configuration. To achieve this, there are three possible ways: ESXi command line, vSphere CLI or PowerCLI In this article I will show how backup and restore host […]


Broadcom Social Media Advocacy

VMware vCenter Server 8.0 Update 3c: Fixing vSphere Client Idle Session Issue

VMware has released vCenter Server 8.0 Update 3c, bringing several key improvements and bug fixes. Among these, one notable issue addressed in this release relates to the vSphere Client’s behavior when left idle for extended periods.

PR 3439359: vSphere Client Session Becomes Unresponsive After 50 Minutes of Inactivity

In previous versions, particularly starting from vSphere 8.0 Update 3b, users encountered a frustrating issue with the vSphere Client. If a session remained idle for more than 50 minutes, the client would become unresponsive, making it impossible to log in or log out. Attempting to resume work in the same browser would yield no results unless all browser cookies were cleared. This was not only an inconvenience but also a disruption for administrators managing their vSphere environments.

Cause of the Issue: Apache Tomcat 9.0.91 Upgrade

The root of the problem was traced back to an upgrade to Apache Tomcat 9.0.91, introduced in vSphere 8.0 Update 3b. This upgrade brought with it a change in the default value of the property org.apache.catalina.connector.RECYCLE_FACADES. Previously set to FALSE, this value was altered to TRUE, causing sessions to become invalid after extended inactivity. This meant that any session left idle for over 50 minutes would not properly refresh, effectively locking the user out until they manually cleared cookies from their browser.

Links:

Quick Tip – Using PowerCLI to query VMware…

Quick Tip – Using PowerCLI to query VMware…

One of the most powerful and versatile VM management capability in vSphere is the Guest Operations API, providing a rich set of operations from transferring files to/from the guest to running commands directly on the guest as if you were logged in! An easy way to consume the Guest Operations API […]


Broadcom Social Media Advocacy

Quick Tip – SSH Server, Client & Authorized Key…

Quick Tip – SSH Server, Client & Authorized Key Configurations for ESXi 7.0 Update 1 and later

Quick Tip – SSH Server, Client & Authorized Key…

The general best practice is to disable SSH on your ESXi host by default and if/when you need access, you can turn it on temporarily and disable it when you have completed your task. For users that need to modify the default SSH configurations whether that is on the server side, client side or setting […]


Broadcom Social Media Advocacy