Since some time ago, I’ve been mostly dealing with OpenStack, requiring different releases to test for different tests, etc. Virtualization, as provided by KVM requires some CPU flags to get accelerated operations, vmx and svm depending on your processor architecture, but, of course, this is only provided on bare-metal. In order to get more flexibility at the expense of performance, nestedvt allows to expose those flags to the VM’s running at the hypervisor so you can run another level of VM’s inside those VM’s (this starts to sound like the movie Inception). ...

Hi, Telegram.org recently announced the support for writing bots for their platform, by providing details at https://core.telegram.org/bots. I was missing for a long time the ability to get a count on karma like we’ve on IRC servers, so I started with it. My first try is published at github repo in https://github.com/iranzo/stampython. At the moment it just uses the polling interface to check the new messages received on the channels the bot is in, and later processes them and send the relevant replies via messages. ...

Hi, Some time ago, and after discussing with a colleague, I had a look on Intel’s AMT, and this week I did a demo for another colleague as a cheap-replacement for having power fencing capabilities on commodity hardware. AMT provides a server-like Out of band management like iLO, iDRAC, RSB etc and it’s included in i3 with vPro processors/chipsets of some equipment. I did the test on a Lenovo X200/201 system I had as old laptop. ...

I had my old blog based on SPIP, and I wanted to keep all the posts together, to make it easier to migrate in the future. Initially, I migrated my posts from blogger, where there’s an option to export the contents and some plugins to allow easier importing to markdown files (to be used by OctoPress), those were the recent posts, so part of the job was already done there. Next step, was to migrate old posts on my SPIP site. ...

Installing Linux on a RAID has lot of advantages, from using RAID1 to enjoy protection against drive failures or RAID0 to combine the size of several drives to create bigger space for files with all the smaller disks we have. There are several RAID level definitions and may have different uses depending on our needs and hardware availability. For this, I focused on using raid1 for the system disks (for greater redundancy/protection against failures) and raid0 (for combining several disks to make bigger space available for non important data).. ...