This Xymon plugin checks sensors (psu, temperature, fans et al) and overall
health of SAN switches that understand the Fibre Alliance MIB.
There is a long list of companies behind that MIB; I have tested the script
with switches from Brocade and Qlogic.

The following instructions are for Ubuntu Linux.

Put the file fibrealliance.sh in /usr/lib/hobbit/server/ext/
Put the file hobbitlaunch.d/fibrealliance.cfg in /etc/hobbit/hobbitlaunch.d/

Mark the switches in /etc/hobbit/bb-hosts with the tag fibrealliance
so the script will pick it up.

Restart Xymon:

service hobbit restart

You should get one dot for the sensors and one for the overall status.
Green is good, as always.