Software. The main software components you need for a working LiveJournal installation are as follows (the recommended version is noted):
At this time, LiveJournal has not been ported to & will not work with Apache 2 & mod_perl 2.
These are the recommended versions. The versions available in
Debian Stable plus any security updates
are commonly used for LiveJournal installations. It does not matter if you have a different, perhaps more recent,
minor/incremental software version (e.g. 1.3.35). An exception to this point is mod_perl: version
1.99 is part of the mod_perl 2 series, which
will not work with LiveJournal.
Hardware. There are no specific hardware requirements for a LiveJournal installation, but Apache/mod_perl and MySQL can utilize a lot of memory very quickly. Determining the right amount of processor speed, storage space, and RAM depends on how busy your LiveJournal installation will be. A simple rule of thumb to remember is that posts and comments drive site traffic, not necessarily the presence of more users.