Is it possible to add High Availability to existing systems?

is adding HA to a disk added to existing systems easy to do?

Or is it best to do a new install?


You will want to do a new install. If installing on two systems, you can install on your second system, configure. then migrate your primary system.

thanks, Ill do new installs.

I assume I can move the existing commercial modules to the 2 new systems .

at , does ‘Zend ID reset’ have something to do with that

That worked . HA is set up.

a few years back I had set up HA using drbd/heartbeat on 2 debian systems.

this new method is so much better. thank you.