Author: kral2

Working with Comware OS (HPE FlexFabric Switching) – Basics

TL;DR I recently got the opportunity to get my hands on a HPE 5700. This switch come from H3C assets and run the Comware OS. It is a bit disturbing to work with it when you are used to Cisco’s

Posted in CLI Tagged with: , , , ,

How.to : Configure a GbE interface on Nexus 5xx/55xx/56xx

When you insert a GLC-T module without any previous configuration, you are likely to get the error ” SFP Validation Failed”, even if using a compatible module. This is because not all ports are capable to “downgrade” their functional speed

Posted in CLI Tagged with: , , , ,

I.use[iCloud.Storage] 200GB

Today I decided once again to stop fighting against apple’s devil plan to rule my wallet : I subscribed to an iCloud 200 GB storage plan. I already have plenty of “databox”, either personal/free or corporate accounts, with free space.

Posted in I.Use Tagged with: ,

Crash Test – What happen when you loose L1&L2 on an UCSM Cluster?

L1 & L2, What’s it? The L1 & L2 links are dedicated physical ports (GbE) on UCS Fabric Interconnect platform, responsible of carrying the heartbeat traffic for the UCSM cluster. To be clear, both links are crucial to the survival of the cluster!

Posted in Design, Infrastructure Tagged with: , ,

How.to : Updating an UCS system – from FI to OS drivers

Update October 27th 2015 At the time writing this article, I mentioned my experience on upgrading from version 2.2(3a), and the unexpected reboots of “some” blades. It turns this bug have been identified and is fixed since 2.2(3g). I forgot to update this article as promised : thanks

Posted in Infrastructure Tagged with: , , , , ,

VMware don’t play nice with CoD. For now. Me neither …

No, I am not going to talk about Call of Duty. At least not today, not on this blog post, even maybe not during this life … 🙂 So what’s CoD and what the hell this have to do with

Posted in Infrastructure Tagged with: , , , ,

Integrating scoop.it with wordpress … as much as I can, with a free account…

Update 2017/04/02 : Scoop.it apparently changed something in their publishing scheme. I don’t have the time to debug/update/nor I use this service anymore. I will simply deactivate the page on this blog from now on. I am using scoop.it as

Posted in The Blog

Links collection #2

Here is the Links Collection #2 This one is pretty short, and focused on VMFS & VMDK. The thinking on the first link about all possible alternatives and the trade-offs is really interesting from a design point-of-view. Next, some useful

Posted in Links Tagged with: , , ,

SSH keys & OSX

Put your private & public key on folder ~/.ssh All private keys must have 600 rights (-rw——-), or they will be ignored. List your currently load keys: ssh-add -l Load your keys on ssh-agent and store them on OSX Keychain

Posted in CLI Tagged with: ,

I.Use[Markdown] to write formatted plain text … and TheJournalist debugging

TL;DR Using markdown to write plain text … such a brilliant idea! The main advantage of markdown is powerful text formatting while being free of application container lock-in : portability! So when you choose an editor for writing in markdown,

Posted in I.Use Tagged with: , , , , ,