Linux
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Linux-related Projects
I am hosting my websites and mailservers on a set of 4 servers based on the Debian GNU/Linux distribution. The servers are assigned as described below:
- katmai - Dell PowerEdge T105, used as main server with 250 GB of storage for user directories.
- krakatoa - Dell PowerEdge SC440, used as backup for katmai.
- fuji - HP Pentium III, used as main Internet gateway, firewall and load balancer.
- unzen - HP Pentium III, used as backup system for fuji.
The data backup (amanda), trending (cacti) and monitoring (nagios) functions are performed by ruapehu, a Debian GNU/Linux system that hosts also Debian and Centos repositories.
For desktop applications I have a Centos Linux system, kilauea, equipped with a DVD-RW drive and a 60 GB storage buffer for DVD images, and an Ubuntu Linux system, tambora. An old system, rainier, is to be given to my sons when they get old enough to know how to use it.
Two other systems are used for model railroading projects - stromboli (an old Pentium 100MHz box slated for usage as computer-based interlocking) and orodruin (a Sun Ultra-60 with Solaris 10 operating system used for development).
I named my machines after active volcanoes: Katmai (Alaska, site of the most powerful eruption of the 20th century in 1912); Kilauea (Hawaii); Krakatoa (Indonesia, well known for its 1883 eruption); Orodruin (situated in Tolkien's Middle Earth, also known as Mt. Doom; it is the only non-Intel system in my basement); Rainier (Washington, situated not far from Redmond); Ruapehu (New Zealand); Stromboli (Italy); Tambora (Indonesia, had the most powerful eruption in recorded history in June 1815); Unzen (Japan); Fuji (Japan).
The main servers katmai and krakatoa are set up as a 2-node cluster, based on the High Availability Linux (HA-Linux) system. Several disk areas are mirrored trough DRBD between the two systems.
Another HA-Linux 2-node cluster is formed by fuji and unzen.
High Availability Linux
Linux-Xen Virtual Hosts
Linux Virtual Server
The Sandesnet network is protected by Linux iptables-based firewalls built with the ipmasq(1) utility. The ipmasq(1) utility is distributed with the Debian and Ubuntu GNU/Linux distributions and allows the modular building of firewalls.
