Archive for the tag 'high availability'



Oct 02 2016

Double Microsoft Exchange and Mail Relay on a Remote Site

Published by under Exchange

You have an Exchange server (or cluster) that communicates to the outside world through a mail relay (also called smarthost in Microsoft terminology), usually in a DMZ. You’d now like to give some high availability to this infrastructure, that could ideally cover a disaster recovery plan. This can be achieved doubling servers on a second […]

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Apr 18 2007

Mysql Failover

Published by under Mysql

Important note: Heartbeat is now obsolete and has moved to a new stack available on Clusterlabs. For simple high availability project using a virtual IP, try out keepalived that does monitoring and failover with just a simple configuration file. When a Mysql server contains critical data, it’s always a good idea to rely on more […]

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Apr 01 2007

Mysql Replication

Published by under Mysql

Having a few databases running on Mysql with tables growing to several millions of rows, backups become pretty heavy. If the server fails, it can mean several hours lost, working on setting up a new server and reimporting the data from the backup. I’m not even talking about the potential financial loss due to the […]

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