Davies: MySQL Cluster: Two Webserver Setup

“This HOWTO was designed for a classic setup of two servers
behind a loadbalancer. The aim is to have true redundancy – either
server can be unplugged and yet the site will remain up.

“You MUST have a third server as a managment node but this can
be shut down after the cluster starts. Also note that I do not
recommend shutting down the managment server (see the extra notes
at the bottom of this document for more information). You can not
run a mysql cluster with just two servers And have true
redundancy…”

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