New skills:

- Pound load balancing
- MySQL
- Apache: memcache module
- PHP: pear
- Python: sending email with Python using MIME types
- NTP configuration
- Email server: procmail and postfix

- SSL certificate renewal

- Xen virtualization

- Cisco switches configuration

- Networking: VLAN and bonding on linux (Debian and CentOS)

- Reverse engineer all the set up solutions: switching infrastructure, nagios, web solution, SSL configuration, web server to re-implement