Binary package “mha4mysql-manager” in ubuntu trusty
Master High Availability Manager and Tools for MySQL, Manager Package
MHA performs automating master failover and slave promotion with minimal
downtime, usually within 10-30 seconds. MHA prevents replication consistency
problems and saves on expenses of having to acquire additional servers.
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All this with zero performance degradation, no complexity (easy-to-install)
and requiring no change to existing deployments.