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# Installation
The following sections detail how to set up a new instance of NetBox:
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1. [PostgreSQL database ](1-postgresql.md )
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1. [Redis ](2-redis.md )
3. [NetBox components ](3-netbox.md )
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4. [Gunicorn ](4-gunicorn.md )
5. [HTTP server ](5-http-server.md )
6. [LDAP authentication ](6-ldap.md ) (optional)
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Below is a simplified overview of the NetBox application stack for reference:
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## Upgrading
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If you are upgrading from an existing installation, please consult the [upgrading guide ](upgrading.md ).
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!!! note
Beginning with v2.5.9, the official documentation calls for systemd to be used for managing the WSGI workers in place of supervisord. Please see the instructions for [migrating to systemd ](migrating-to-systemd.md ) if you are still using supervisord.
