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[cobalt-users] High Availability setup. Details missing. Help?
- Subject: [cobalt-users] High Availability setup. Details missing. Help?
- From: "Yiannis Costopoulos" <yiannis@xxxxxxxxxxxxx>
- Date: Thu Apr 1 15:08:00 2004
- List-id: Mailing list for users to share thoughts on Sun Cobalt products. <cobalt-users.list.cobalt.com>
Hi,
most probably you have seen my posts already in here. I have managed
to create a quite lo-tech HA system using only two RaQs550s
box1 is Web, Mail, Backup MySQL, Secondary DNS.
box2 is Primary DNS, MySQL, Backup Web, Backup Mail.
- I connect the two eth0s to a switch and then to the Net.
- I connect the Two eth1s between them using a crossover cable.
- I run rsync over ssh two synchronise /home/.sites/, /home/.users/ &
/etc/httpd/
- I replicate MySQL from box2 to box1
- I can write little scripts that every 30 secs ping each other, box1
queries MySQL, box2 requests a test Webpage, box2 "talks" to POP, etc.
If any of those fails, each box will try to access "outside" servers. If
a box fails that too will shutdown. The other box takes over the IP of
the shut box.
I would like to setup the site and user information only on one box, not
both.
Which files/dirs so I need to rsync except from:
/home/.sites/
/home/.users/
/etc/httpd/ ???
Do I need to know anything else? Should I copy anything else?
TIA
Yiannis Costopoulos.