My favourite Dstat November 9th, 2007
Dag Wieers' Dstat is the ultimate live monitoring tool to catch your servers in the act.
My favourite Dstat command:
dstat -l -c -p -y -m -p -d -n
Which will paint this pretty picture on a wide-enough terminal:
Note the periodical repeating header at the bottom! Dstat is even smart enough to truncate the columns if your terminal can't handle the heat because it's to narrow - marvelous...
tags: rhel5
Kernel panic at boot RHEL 5/Centos 5 in Parallels Desktop for Mac June 20th, 2007
Booting RHEL 5 or Centos 5 for the first time in Parallels Desktop (build 3188) wil get you an instant kernel panic. Just include agp=off as a kernel parameter and the system boots and works like a charm (use 'a' at the Grub screen to edit the kernel parameters).
Afterwards you can edit the /etc/grub.conf to include agp=off by default:
title CentOS (2.6.18-8.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet agp=off
initrd /initrd-2.6.18-8.el5.img
tags: rhel5
