# Installation requirements  
The system on which you plan to install Rasa X / Enterprise must fulfill the following requirements:

## Supported Operating Systems  
The following operating systems are supported:

- Ubuntu (18.04/20.04)
- CentOS (7/8)
- Red Hat Enterprise Linux

## Unsupported Operating Systems  
- **Windows**: Rasa X / Enterprise is developed for Linux-based systems. The software does not run on Windows and there are no plans to add support for it.
- **macOS**: Running Rasa X / Enterprise on macOS is possible, but not supported.

## Software Requirements  
### Supported Event Brokers  
The following event brokers are supported:

- Kafka 2.6 or newer
- RabbitMQ 3.8.3 or newer

### Database requirements  
#### Supported Databases  
The following databases are supported. Please note these requirements are only for the Rasa X / Enterprise database,
see the Rasa Open Source docs for [tracker store database options](/content/docs/rasa/tracker-stores/index.html).

- PostgreSQL 12.8 or newer  
  
  - PostgreSQL comes bundled with an installation of Rasa X. As a replacement for the bundled
    database, you can also use an external PostgreSQL database (e.g. a Google Cloud
    managed instance, or AWS RDS).
  
  - For Rasa X < 1.0.0 installations PostgreSQL 11.7 was used as default version.
    In [the migration guide](https://github.com/RasaHQ/rasa-x-helm/blob/main/docs/postgresql_migrate_from_11_12.md), you can learn how to migrate from PostgreSQL 11 to 12.8.
- Oracle 19  
  
  - A database connection with Oracle has to be initialized with UTF-8 encoding, e.g.
    `DB_URL=oracle+cx_oracle://${DB_USERNAME}:${DB_PASSWORD}@localhost:${DB_PORT}/${DB_NAME}?encoding=utf8`

##### caution  
Support for Oracle will be dropped in the future.

#### Database Permissions  
Databases used by Rasa X / Enterprise or related services should be exclusive to these services.  
**Do not make direct changes to the database,**  
**schemas, roles, or other objects except when following instructions in the**  
**documentation.**

- By default, Rasa X / Enterprise uses the `public` schema. This can be changed by setting the `POSTGRESQL_SCHEMA` environment variable.
- The database role used by Rasa X / Enterprise should be the owner of the target schema, or it should have at least the `CREATE` privilege on the target schema.
- The database role used by Rasa X / Enterprise should have the `LOGIN`, `PASSWORD` and `INHERIT` attributes.
- Rasa X / Enterprise requires read access to tables in the system catalog schema (`pg_catalog`). In most cases this won't need to be explicitly configured.

## Hardware Requirements  
Minimum Requirements / Recommended:

- Dual Core CPU / Quad Core CPU
- 8 GB RAM / 16 GB RAM
- 20 GB / 50 GB Free Disk Space

## Supported Browsers  
The Rasa X / Rasa Enterprise web interface aims to support  
[browsers that meet the following criteria](https://browserl.ist/?q=%3E0.2%25%2Cnot+ie+%3C%3D+11%2Cnot+op_mini+all):

- 0.2% market share
- not Internet Explorer
- not Opera Mini