My Personal Blog
Technical stuff. Everything is my own.
Backup only one directory At the post : Backup Raspberry Pi you could see how I automated the creation of an SD Card image and put it in a safe place. On my Raspberry Pi I am running MRTG for my smart meter. Unfortunally I had a failure and now I am missing some data … Read more
Let’s break the Hyperflex system ! In the lab there is a 5 node Hyperflex cluster up and running. Everything is healthy and the system is almost for 60% filled, so that is closer to a real test then a lab test. There are several ways to break the cluster and I choose the easiest … Read more
Auto Healing ! Hyperflex is cool and I really like this feature. Not only on Powerpoint, but also how it’s working. You have to ask yourself : How can a system heal itself ? Doesn’t a RAID controller do that for storage ? Why change that into something completely different? How does it work ? … Read more
Is your Hyperflex system failing ? Powerpoints are nice selling tools, and I like to test all kinda things before I believe it ! So why not test a healthy Hyperflex System and remove a HDD ? When the system notice there is a HDD missing or corrupt, it will kick in self healing in … Read more
Cisco UCS Rack servers are more than pizzaboxes ! The most common servers do have the same CPU (intel), common memory and common HDD or SDD. So why would you choose for Cisco UCS Rack servers ? Here are 5 reasons : 5: Automation Ofcourse you can configure the whole rack server manually, but why … Read more
Expanding Cisco Hyperflex 1.8 Cluster Expanding a Cisco Hyperflex cluster (Hyper Converged Infrastructure) with a Cisco HX Server is very, very easy ! Make sure that you export the JSON file after the Hyperflex installation. This will makes life way easier ! Just use that file, fill in some credentials and wait about 30 minutes. … Read more
Hyperflex 1.8.1c installation Cisco Hyperflex Hyper converged (HCI) solution is getting easier and easier ! Before installing the only thing you will have to do is to download the Hyperflex 1.8 installer software from http://www.cisco.com/go/software The Fabric Interconnect and servers are already with the correct version of the needed software. The hyperflex 1.8 installer is an … Read more
Password Reset This time I didn’t forget a password. I just got a Cisco UCS Fabric Interconnect without any credentials. Here is the procedure to reset it : Connect the console and power on the Fabric Interconnect A. Make sure the Fabric Interconnect B is powered off ! Keep pressing CTRL-l for the loader prompt … Read more
Why dCloud ? Is there anything nicer to see and feel a product ? Cisco got dcloud.cisco.com where a lot of labs are provided for Cisco employees and partners. Collaboration, Security, Data Center, integration with 3rd party’s. Feel how easy it is to do a Hyperflex installation. With a remote desktop you have access to … Read more
UCS Director It’s an automation tool. Not only for Cisco UCS servers, but also for networking, hypervisors and storage. Today I wanted to automate our FlashStack which contains storage of PureStorage with the UCS Director. When configuring UCS Director, I noticed I had to create a WWNN pool at the UCS Manager. After configuring, the UCS … Read more