keycloak-scim/server_installation/topics/installation/system-requirements.adoc
andymunro cb730556a7
KEYCLOAK-15291 Addressing review comments. (#1201)
Co-authored-by: Stian Thorgersen <stianst@gmail.com>
2021-11-10 12:39:43 +01:00

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=== Installation prerequisites
These prerequisites exist for installing the {project_name} server:
* Can run on any operating system that runs Java
* Java 8 JRE or Java 11 JRE
* zip or gzip and tar
* At least 512M of RAM
* At least 1G of diskspace
* A shared external database like PostgreSQL, MySQL, Oracle, etc. {project_name} requires an external shared
database if you want to run in a cluster. Please see the <<_database,database configuration>> section of this guide for more information.
* Network multicast support on your machine if you want to run in a cluster. {project_name} can
be clustered without multicast, but this requires a bunch of configuration changes. Please see
the <<_clustering,clustering>> section of this guide for more information.
* On Linux, it is recommended to use `/dev/urandom` as a source of random data to prevent {project_name} hanging due to lack of available
entropy, unless `/dev/random` usage is mandated by your security policy. To achieve that on Oracle JDK 8 and OpenJDK 8, set the `java.security.egd`
system property on startup to `file:/dev/urandom`.