Revision 143a77a9
Added by Nicolas CHARLES almost 7 years ago
| 10_installation/05_requirements/22_architecture_root_server.txt | ||
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===== Memory
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The required amount of RAM mainly depends on the number of managed nodes. A general rule for the minimal value is:
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The required amount of RAM mainly depends on the number of managed nodes. A general rule for the minimal value on a stand-alone installation is:
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* less than 50 nodes: 2GB
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* between 50 and 1000 nodes: 4GB
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* more than 1000 nodes: 4GB + 1GB of RAM by 500 nodes above 1000.
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* more than 4000 nodes: 10GB + 2GB of RAM by 500 nodes above 4000.
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When managing more than 1000 nodes, we also recommend you to use a multiserver
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installation for Rudder as described in chapter <<multiserver-rudder, Multiserver Rudder>>.
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For large installations, you should also tune the amount of RAM given to:
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* the web application, as explained in the section
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When your server has more than 2 GB of RAM, you have to configure the RAM allocated
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to the Java Virtual Machine as explained in the section
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<<_configure_ram_allocated_to_jetty, about webapplication RAM configuration>>
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* PostgresSQL, as explained in the <<_optimize_postgresql_server, Optimize PostgreSQL Server>> section
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When your server has more than 4 GB, you may need to also tune the PostgresSQL
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server, as explained in the <<_optimize_postgresql_server, Optimize PostgreSQL Server>> section
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[TIP]
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====
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As an example, a Rudder server which manages 2600 nodes (with a lot of policies
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checked) will need:
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* A server with 8 GB of RAM,
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* 4 GB of RAM will be allocated to the JVM.
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In our load-tests, with such a configuration, the server is not stressed and
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the user experience is good.
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====
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===== Disk
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| 6_handbook/20_application_tuning.txt | ||
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----
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The amount of memory should be the half of the RAM of the server, rounded down to the nearest GB.
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For example, if the server has 5GB of RAM, 2GB should be used.
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The amount of memory should be the half of the RAM of the server, rounded up to the nearest GB.
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For example, if the server has 5GB of RAM, 3GB should be allocated to Jetty.
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==== Optimize PostgreSQL server
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Also available in: Unified diff
Fixes #10744: Document correctly memory usage