Tag Archives: linux

Linux Day all the way in 2010

A casual on-line conversation with a nice guy from Linux community: seven: «I’m very busy preparing Linux Day 2010 at the moment.» geekscrap: «Whoa! it’s in october, isn’t it? You’re taking it early!» seven: «This year it’s going to be big.» You’ve been warned.

Posted in Zeitgeist | Also tagged , , | Leave a comment

Multiple IP uplinks with Gentoo

When your computer or server has access to multiple LAN segments with different address spaces and different gateways to the Internet, there’s a nice feature called policy routing that allows you to use all of them simultaneously without having to re-configure your network topology. This is especially useful when you want to increase the bandwidth and […]

Posted in How-tos, Sysadmin | Also tagged , , , , , | 2 Comments

Top 25 vulnerability RSS feeds

One way to receive up-to-date reports about vulnerability issues is subscribing to vulnerability RSS feeds: they update on demand, they don’t rely on your mail subsystem and they don’t fill up your mailbox. The only drawback is that you could miss alerts if you don’t sync your feeds for a long time, but if you’re […]

Posted in Sysadmin, Tips | Also tagged , , , , , , , , , , , , , , , | 1 Comment

LUKS mermaids of remote unlock

Recently, I’ve browsed several how-to’s regarding the possibility of unlocking a LUKS root volume remotely using an SSH connection. For reference, the first of its kind is the one for Debian, published at Coulmann.de. Some of these how-to’s were posted to forums and mailing-lists and received many thankful comments from sysadmins wondering how to make […]

Posted in Rants, Sysadmin | Also tagged , , , , , , | 6 Comments

Using screen as your login shell

GNU screen is a nice utility that allows running multiple interactive shells from the same terminal session and allows you to detach from your terminal while keeping those shells alive. Later on, you can re-attach to your background screen to get back to your shells. It has a lot more features like automatic session logging and […]

Posted in Sysadmin, Tips | Also tagged , , | 8 Comments

Linux RAID disk wipeout

A common problem with Linux software RAID (aka md) happens when you try to use a disk that was previously part of some other disk array. Symptoms include: wrong volume size, unable to add device to raid, volume UUID mismatch. To fix the problem you need to use mdadm utility on the disk to cleanup: # […]

Posted in Sysadmin, Tips | Also tagged , , , | 5 Comments

Yo momma uses Ubuntu

Recently I replaced my mother’s PC, and I thought I could switch her to Linux. She was previously using Windows XP with several Open Source applications (Open Office, Firefox, Thunderbird, etc), so I decided to install Ubuntu 9.10, since it seems that it’s most devoted to non-expert users (she’s over-sixty and not inclined to change […]

Posted in Rants, Sysadmin | Also tagged , | 4 Comments

What evil lurks in OCFS2

In the beginning, Linux was a free general purpose OS and it was not clear how Linux companies would generate profits out of it. In 1999 RedHat company went public and started to develop a real business plan. After a few years, in 2003, one of its main competitors, SuSE Linux, was acquired by Novell. […]

Posted in Rants, Sysadmin | Also tagged , , , , , , , , | 8 Comments

Gentooize Part 1: colorize console

One of the best lessons you can learn from Gentoo is you can export most of its juice to other OSes. I’ve been using Gentoo as main Linux distro since 2001. Currently I have a few setups where drawbacks of migrating to Gentoo would exceed benefits, so I decided to increase affinity by adding some […]

Posted in How-tos, Sysadmin | Also tagged , , , , , , | 2 Comments

Process management roundup/1

Under UNIX-like operating systems, there are several ways to manage long-running processes such as daemons. Process management is a crucial aspect of system maintainance and therefore it’s one of the aspects to take into account when planning a deployment. Since available solutions are getting more and more complex and specialized, I thought of writing a […]

Posted in Sysadmin | Also tagged , , , , , , , , | 2 Comments