Archives by Tag 'centos'

Setting up a VOIP Asterisk server, part 1

By jbayer - Last updated: Tuesday, March 15, 2011

The saga of replacing a legacy phone system with a complete VOIP solution The lease was coming to an end on our legacy phone system, and we started looking for an alternative.  We considered the following choices: Extend the lease for another 3 years, at which time we would own the system Replace the phone […]


Set up a mail server for multiple domains using Postfix, Dovecot & PostfixAdmin

By jbayer - Last updated: Wednesday, March 9, 2011

A common task is to set up a mail server.  A less common task is to be able to support multiple domains on the same mail server, with the possibility of the same address on different domains. An easy way to do this is to use Postfix and Dovecot, using MySql as a backend to […]


Installing SugarCE on CentOS (and Fedora)

By jbayer - Last updated: Monday, March 7, 2011

SugarCE is an open-source version of the SugarCRM, (CRM meaning Customer Relationship Manager).  I needed to install it on a CentOS system, so made the attached script.  The script assumes that you are starting with a minimal CentOS 5.5 install, Fedora will most likely work as well. The SugarCRM site is located: and here […]


Updated lftp for CentOS 5.5

By jbayer - Last updated: Thursday, February 10, 2011

(Following taken from: Every sysadmin should have a decent command line client for transferring files (beyond scp of course). The lftp program written by Alexander Lukyanov can handle seven file access methods: FTP, FTPS, HTTP, HTTPS, HFTP, FISH, and SFTP. The openssl library is required during compile-time in order for FTPS and HTTPS to […]


Installing Zabbix on a CentOS/RedHat system

By jbayer - Last updated: Friday, December 17, 2010

One of the core tasks of a good system administrator is monitoring systems, and responding to problems as quickly as possible. Zabbix is an open source monitoring system which offers advanced monitoring, alerting and visualisation features today which are missing in other monitoring systems, even some of the best commercial ones. Installing Zabbix, while not […]


JFS, ReiserFS and XFS for CentOS

By jbayer - Last updated: Thursday, December 9, 2010

CentOS is usually used as a server.  As such it quite often needs to deal with large files and large data transfers.  The default filesystems for CentOS is ext3, which, while a very reliable and proven filesystem, is not well suited to a large server environment.  There are quite a number of other filesystems available, […]


Alternative CentOS Repositories

By jbayer - Last updated: Thursday, December 9, 2010

There are several repositories provided by CentOS and other 3rd party developers that offer software packages that are not included in the default base and updates repositories. While no list can be 100% complete, as anyone may announce an archive, it represents some major efforts and provides a summary of what each repository offers. These […]