Back in may 2001, I grabbed my first domain name, colino.net. I wanted to stop switching URL each time I switched the hosting. At the time I had…
25/11/2008 Lire la suite...-
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How to change Dell’s BIOS settings from a Linux command-line
To be able to change BIOS settings from the command-line on a Dell Poweredge, you need the syscfg utility. It’s very useful when you want to change a configuration on, for example, 32 nodes at once, without having to plug screen, plug keyboard, reboot, change setting, reboot 32 times. Here is how I installed it…
21/05/2008 Lire la suite... -
Lazily testing memory
I had, until recently, a problem when it came to test memory on the nodes in my lab. Until now, I was able to PXE boot memtest+, but had to go down to the lab and plug a screen to check the output. Multiple annoyances: first I had to move my ass to the lab…
13/05/2008 Lire la suite... -
Stuff that happens to sysadmins
Buy one 1U server from $supplier, specifically ask for a pair of rails, learn that « Of course it comes with rails! ». Two weeks later. Buy a 42U rack, and eight 1U servers, all of these from the same $supplier, and at the same time. Receive your rack and 8 servers, without rails. Inquire by…
05/03/2008 Lire la suite... -
Geek pr0n again
Take one 3U server from SuperMicro, fitted with an Adaptec 31605 SATA RAID controller and 16 one-terabyte disks. Create a RAID 0+1 array for data storage, with 14 of these 16 disks. You get: #available storage [root@sam119 ~]# df -h /data Filesystem Size Used Avail Use% Mounted on /dev/sdb1 6.3T 941M 6.0T 1% /data…
22/01/2008 Lire la suite...
