Monthly Archives: 2010-10

The best Finnish Pycon of the world, almost over

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Summary

  • Finally Python hackers get know to each other –  thanks Syneus for making this happen after all!
  • Learnt a lot of new interesting projects, check #pyconfi in Twitter for slides
  • Lots of Django developers, some Plone developers
  • 75% had Macs
  • Somebody had used Python since 1.3
  • Finnish Python association on its way
  • www.python.fi will be bootstrapped

Join to the discussion.

Now, waiting for the unofficial part.

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Updating and backing up Joomla! site on Ubuntu Linux

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Here are short instructions for advanced Linux users to update Joomla! sites on Ubuntu Linux servers. Little Joomla! experience is required, the instructions are written from the Linux sys-admin reader perspective. The instructions assume full control over the server, though the instructions might also work on the shared hosting. These instructions also consider minor security updates only, not major updates like Joomla! 1.5 -> 1.6. For further instructions, please refer to Joomla! update manual. See also Joomla! update and migration forum. It is useful to subscribe to Joomla! security announcements RSS as Joomla!, being unsafe PHP software by its nature, requires security updates very often. Script kiddies can take down your site very fast unless you can keep up with the updates.

1. Work as the site user

The site can be installed locally (under /home) or globally (under /var/www). If the site is installed globally you might need to set your effective user. You should perform the command as the same user who owns the site PHP files. You should not be using root use as the owner of the site files. If you run Joomla! site through Apache, the effective user is www-data. Use sudo command to switch to this user. Use ls -l command to figure out which user you are.

sudo -i -u www-data

2. Back up code files

Use tar command to pack the existing folder structure in the case the update will destroy critical files.

cd /var/www/yoursite
tar -cjf yoursite.tar.bz2 *

3. Back up database

Note that you can see the database password in configuration.php file if you do not remember it.
mysqldump -umysql_user_name-p mysql_database_name > mysql_database_name.sql

4. Check Joomla! version

Login as administrator. The login URL is the site URL + /administrator
Choose Help -> System info from the menu.
You’ll see Joomla! version line.

5. Download version specific Joomla! update pack

Each minor version requires its own update. You can have update packages between each version like 1.5.18 -> 1.5.19, or update packs which leap versions like 1.5.18 -> 1.5.20. Go to Joomla! package listing. Pick-up the package which will update your current Joomla! version to the latest version. Download the patch file to the server.

wget http://joomlacode.org/gf/download/frsrelease/12611/53380/Joomla_1.5.18_to_1.5.20-Stable-Patch_Package.tar.gz

Extract it

tar -xvzf Joomla_1.5.18_to_1.5.20-Stable-Patch_Package.tar.gz

This will replace the changed Joomla! files with newer versions.

6. Check the update has been correctly applied

Visit Help -> System info again. See that the version number has been updated.
Check that all pages on your site are working.

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