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documentation:2.1:highavailability [2019/01/15 15:55] (current)
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 +====== High availability ======
 +LemonLDAP::NG is highly scalable, so easy to insert behind a load-balancer:
 +  * Portal does not store any data outside the session database, so you can have many portal servers using the same HTTP host name
 +  * All handlers download the whole configuration, so many servers can serve the same virtual hosts
 +You can for example set up a fail-over cluster with [[|Heartbeat]] and [[|HAproxy]], like this:
 +{{ :documentation:ha-apache.png |}}
 +You just have to share configuration and sessions databases between those servers:
 +{{ :documentation:ha-sessions-configuration.png |}}