ZODB, how to properly delete a BLOB file
Due one of my Pyramid current projects, I was playing a bit with ZODB and blob image storing. After reading here and there, I had no idea how to properly delete a filesystem stored image, blob field related.
PyConES 2014
El pasado fin de semana del 8-9 de Noviembre (2014) se celebró en Zaragoza la segunda edición de la PyConES, la conferencia nacional de Python con mayor relevancia de España. El año pasado también asistimos en su primera edición celebrada en Madrid y este año no iba a ser menos así que allá me fui con Borja, en tren, desde Lugo.
Bash shellshock bug update: loving Fabric
When you wake up in the morning with a new like the bash shellshock bug you should get away your lazy part and update all your servers to new patched version.
Django deploy: problems with limited hosting
Some months ago I had to deal with a Symfony2 project in a shared hosting (Spanish article) and now the big next deal is a similar task with Django. The project is almost done and I have the hosting credentials, once I'm in I noticed that there is no chance to configure anything (Apache, WSGI or whatever) so I was a bit lost.
GPG: Revalidate expired key and add new email account
When you are creating a new GPG key you have to decide how long the key will be valid before to renew. In my case when I got my own key, I was not really thinking on use it daily, it was years ago, just for test and have fun.
Logwatch, add a new postfix custom service
Last days ago I had lot of problems with MTA servers, hacked accounts, bad redirects policies and some other minor issues that kept me with the hands dirty in sysadmin keyboard. Needless to say how I love to put my sysadm hat and start to fix and/or optimize stuff, so from that bunch of problems was born this little script that makes my days easier than before.
Postfix: Deal with a cracked email account
This is a tipical friday story on sysadmin world, starting with a common Munin alert email and ending fighting against a cracked email account due a weak password. The alert referred to a weird problem with inodes outside range in / partition:
Tmux: detach otras sesiones que no son la tuya
Una de las fantáticas features de tmux es la sencillez con la que puedes conectar múltiples clientes a la misma sesión de forma simultánea. Si lo has hecho alguna vez, con terminales de diferentes tamaños, habrás visto algo tal que así:
Django and memcache: clear cache keys
Let's play Django with Memcached. As the great framework Django is, it's so easy to activate any kind of cache in your project. Memcached is one of the options, but you can also work with DatabaseCache, FileBasedCache, LocMemCache, MemcachedCache, DummyCache (a kind of non-cache very useful for devel/test enviroments) or - of course - your own CustomCache if you want.
Mercurial: pager extension
Sometimes when you are using Mercurial you want to paginate the output results. With paginate I mean use someting like bash more or less commands. Trying to focus yourself in a long list display is nearly imposible without a pager, so you can do it old-school-style: