About Me

I'm Andrea Berardi,
a system administrator actually working at a small/medium size ISP of Cremona (Italy).
I'm interested in almost every aspects of system administration particulary focused on using OpenSource Software:

  • Email systems: Postfix, Dovecot, Courier
  • DNS: BIND, Powerdns
  • Backup: Bacula
  • Hosting: Apache, PHP, MySQL, Python
  • Storage: LVM, multipath, SAN management (FC Storage Area Network)
  • Virtualization: Xen, libvirt/KVM

Where can you find me:
* My LinKedIn profile
* Email: syneus AT_PLEASE_DO_NOT_SPAM syneus DOT net
* IRC: Freenode network, #debian-it and #linux-it

Xen and serial ports access from domU

Howto use the serial ports (/dev/ttySX) from a xen domU

Shared hosting server + NAT + virtualhosts reachability

How to make virtualhosts visible to each other on a shared hosting server behind a Firewall.

Xen: Debian Lenny domU and 4gb seg fixup error

I've recently done a dist-upgrade from Etch to Lenny of a xen domU (in order to use the 1.4.6 version of zabbix monitoring software), but at the reboot of the vm I noticed the "4gb seg fixup" error in console/logs.
This is the solution that worked for me:

Debian Xen Networking with VLANs Smart HowTo

How to connect different virtual machines to different networks in a Xen virtualization environment with bridged networking setup using 802.1q VLAN support provided by Linux.