[Voyage-linux] Alix - Move /var directory and Nagios work directory to an external USB Keys

[Pippo Pippo 77]

Hi all,
in order to avoid frequent read/write to Compact flash, i would like to
move all /var directory, and /usr/local/nagios/var direcory to an external
USB keys.
This keys will be dedicated at log and working directory and mounted at
boot by UUID.
I would like to understan da way to move /var and /usr/local/nagios/var
without change log and working path into all applicatio.
My mind is something like "remount" /var from /dev/hda1 to /dev/sda1 but I
don't know how.
I have 2 box, one with voyage 0.5 and one with voyage 0.8
Some one can help me with some suggestion?

Many Thanks
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