January 26th, 2008
I just released a working version of my own greylisting implementation, written in Python and using a MySQL database. I originally wrote this for our mail server at work, as the existing implementations I found online did not satisfy my needs completely. Read the rest of this entry »
Tags: email, exim, greylisting, mta, python, spam
Posted in sysadmin | 2 Comments »
December 18th, 2007
Updating from CentOS 4.5 to 4.6 is very easy. All you have to do is use yum : a simple “yum update” is all you need to do.
However, when updating CentOS to the new 4.6 version on a Virtuozzo VPS, you may encounter a dependency error. On my VPS, I got the following message : Read the rest of this entry »
Tags: centos, rpm, virtuozzo, vps, yum
Posted in sysadmin | Comments Off
December 1st, 2007
SSH and rsync can be used as a powerful backup tool. Together with hard links, it is also possible to use it to make incremental backups using a simple script. Read the rest of this entry »
Tags: backup, incremental, linux, rsync, ssh
Posted in sysadmin | 3 Comments »
November 17th, 2007
Some problems you may have with Xen and their possible causes…
These are problems I had with CentOS5 host/guests setup using LVM without a virtual disk, and without using the Redhat’s virt-manager tool, but of course it may also apply to other kinds of setup.
Read the rest of this entry »
Tags: centos, redhat, troubleshooting, xen
Posted in sysadmin | 2 Comments »
November 3rd, 2007
OK, so you downloaded an image from jailtime.org or you made your own image as described in my previous post, and now you want to install a Xen guest using it. Here’s how to do it :
Tags: centos, linux, lvm, redhat, xen
Posted in sysadmin | 7 Comments »