Configuring SHA rounds for password in RHEL5/6

Due to NIH syndrome and Drepper being Drepper, the only remotely secure password hashing algorithm in RHEL5/6 is multi-rounds SHA512. The default is just salted SHA512 which sucks.

Also applies to CentOS, ScientificLinux, and other RHEL clones.

Anyway, to update the default setting, these files need updating:

  • /etc/login.defs: add new line SHA_CRYPT_MIN_ROUNDS 5000
  • /etc/pam.d/system-auth-ac: find line with `password    sufficient sha512` and append rounds=5000.

Note that the change to last file may or may not be persistent. I have no idea how to properly set it up.

Finally, run this command: authconfig --updateall.

If you’re using RHEL5, run authconfig --passalgo=sha512 --update first.

Moebooru 3.2

Finally reached the goal: Rails 3.2.6. The isn’t much change between 3.1 and 3.2 which is why I skipped 3.1. As there isn’t much front-end change, it means there isn’t any user-visible changes. Or at least there shouldn’t be.


  • Move to jQuery
  • Use paper_trail for versioning (or something else)
  • Add SVG support (and maybe drop SWF support)
  • Actual news ticker
  • And more!

3.2.0 has been branched and currently running on (and konachan). The next version, 3.2.1 is on default branch and being tested on As (finally) there are database changes, it will not be tested directly on until it is stable enough.

Changes include better support for JRuby, use mini_magick instead of custom plug-in, less monkey-patches (but more bugs), and various clean-ups.

Rails 3.2 in Subdirectory

Steps to be into Rails in subdirectory:

Update to understand the subdirectory mapping:

run Moebooru::Application

change to

map (ENV['RAILS_RELATIVE_URL_ROOT'] || '/') do
  run Moebooru::Application

And then start Rails with correct environment variable (example if you use Unicorn):

RAILS_RELATIVE_URL_ROOT='/img' bin/unicorn

And that’s it. No need to mess with routes.rb as I previously thought after searching and experimenting for few hours. Links etc are properly generated with correct prefix. Or at least based on my quick testing.

May or may not work with earlier version(s) as I haven’t bothered to test it anywhere else.

This Sengoku Collection

A lightweight series which cover one or more generals (female version, obviously) from Sengoku period who have been thrown into modern time. Basically yet another moefied historical figures anime.

What’s mind-blowing is the fact that it will be a 2-cours (26 episodes according to Wikipedia) anime. Like, how is it even possible? (perhaps because it’s produced by Brain’s Base?)

Its first opening theme (and ending) is awesome (read: fun) though.