Remove all kernels but the latest For regular Debian/Ubuntu, type: for kernel in $(cd /boot; ls -1cr vmlinuz-* | head -n -1 | cut -f2,3 -d’-‘); do sudo apt-get remove -y $(dpkg -l | egrep “^ii linux-image-$kernel” | awk ‘{print $2}’); done If you are using ProxMox, type: for kernel in $(cd /boot; ls -1cr … [Read more…]
A MySQL server running on Ubuntu 10.04. First graph is a SATA disk, and the second is an Intel SSD. Remember to mount SSD partitions with the discard option for TRIM’ing support. (available in 2.6.33+ kernels).
This is tested on Debian Squeeze, but should work on most Debian derived distributions and on other Linux distributions with small changes. I have written almost the same guide some years ago, but I wanted to add an extra disk to my QNAP NAS and decided to write it down again. Requirements; 2 identical disks … [Read more…]
Today I wanted to burn a .dmg file, but I didn’t have an Apple computer available. So, running Linux I started to google for a solution, and found one. You need the dmg2img tool, which can be downloaded from http://vu1tur.eu.org/tools/, if it’s not available as a pre-built package for your Linux distribution. On Ubuntu you … [Read more…]
I’m not sure whether this is good or bad… but Adobe has removed it’s 64bit flash player for Linux (don’t know about other platforms). This means no flash-content for me, running Debian Squeeze amd64. The alternatives are .. none? The gnash player (which has a Mozilla plugin) is useless for everything but movies and will crash and hog … [Read more…]
My home dsl router broke yesterday, so I had to figure out how to get online again. Luckily I have my free-data 3g modem (from 3.dk), which works great from Ubuntu (network-manager). This is great for one computer at a time, but not for my entire home network. I searched and found exactly what I … [Read more…]
On my server i have several Linux Vservers running. This works really well, but i am missing some sort of fail-over. I have read articles about drdb8 and active-passive setups, but I don’t want something to complicated. To solve my problem, I have written a small script to rsync a vserver remotely. The script will be … [Read more…]
Linux Software-RAID 1 This is a short guide on setting up Linux software RAID-1 (mirroring) on a running system. Please test everything in a virtual machine or on some unused hardware before you try this on production servers. There could be errors and typos that could wipe your disks, you have been warned. If you … [Read more…]