This guide will show you some tips of how to troubleshooting MAC address conflicts on ESXi and Cisco UCS level.
Cannot run KVM console program because your system deployment.config file states that an enterprise configuration file is mandatory.
You may see following error in Cisco UCS Manager: default Keyring’s certificate is invalid The reason is Admin -> Key Management -> KeyRing default is expired. It’s not possible to delete or change the KeyRing in GUI. You have to log in to SSH of Cisco UCS Manager and run following commands (The strings after … Read more
A few days ago, I deleted some older firmware packages in Cisco UCS Manager. Suddenly more than 100 warnings were generated. The error messages are similar below: blade-controller image with vendor Cisco System Inc……is deleted Cause: image-deleted Clearly, it’s triggered due to packages deletion. But all of my service profiles and service profile templates were … Read more
You may see “The IP address to reach the server is not set” when clicking the KVM console in Cisco UCS Manager. The issue persists even Cisco UCS Manager has enough IP addresses for management. Re-acknowledge or reset CIMC cannot fix the problem. The fix procedure is go to “Equipment” -> Select the server -> … Read more
Older UCS Manager uses Java application. The UI fonts could be extremely small on high DPI screen. The fix is: Go to “C:Program Files (x86)Javajre1.8.0_171bin“. Go to “Properties” of “jp2launcher.exe“. “Compatibility” tab -> “Change high DPI settings“. Check “Override high DPI scaling behavior….“. Select “System (Enhanced)” or “System“.
I used to see memory degrading on Cisco UCS blades. But less see on HPE blades. I thought it maybe quality control problem of Cisco manufacture. Today I read two articles in Cisco website, it explains why we see memory degrading and how it works. I attached the articles below. Managing Correctable Memory Errors on … Read more
新的B200 M4刀片服务器可以使用最新的英特尔四代处理器，如果ucsm固件版本低于2.2.7c会导致发现失败。前几天装一台M4时候就遇到这个问题了。FSM在58%阶段很久然后失败了。
New B200 M4 blades can running on Intel v4 processors. You may see discovery issue if your UCSM firmware version lower than 2.2.7c. I hit that problem few days ago when I install a new M4 blade. The FSM hung on 58% a real long time and failed eventually.
Cisco UCS blade system is the best blade system I used so far. Whatever the hardware, software or support is perfect. I recommend leverage the system for primary system of virtualization. UCS blade system architecture is different with HP. I feel it more likes a network system. Fabric Interconnect (FI) modules exchange data between uplinks and internal components. IOMs on each chassis controls data routing. Architecture is complicate, but it’s powerful to manage large datacenter. Talking about large datacenter, you may have hundred chassis or blades. Data goes through FIs, IOMs and blades, you could see issues on any layer. It’s hard to find out where exactly the problem is. UCS Manager provides statistics for ports just like how Cisco does on network switches. You can show statistics of a particular port. But it doesn’t tell you when and which layer it happened. I tested Cisco UCS adapter for vRealize Operation Manager before I reviewed NetApp adapter for vRealize Operation Manager. It’s developed by same company Blue Medora. I’d like to introduce few of this product, it’s just my personal review.
