> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chartbrew.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Environment Variables
> Environment variables for Chartbrew
The table below shows the `production` variables. Most `development` variables have the same naming, but they are appended with `_DEV` (example: `CB_DB_NAME` -> `CB_DB_NAME_DEV`).
The runtime cache Redis overrides are an exception and use the non-suffixed names in all environments.
| Variable | Default value | Description |
| ----------------------------------------------------------------------------- | :-------------------------------------------------: | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| CB\_DB\_NAME
CB\_DB\_NAME\_DEV
`required` | `chartbrew` | The name of the database |
| CB\_DB\_USERNAME
CB\_DB\_USERNAME\_DEV
`required` | No default | The username of the user that has access to the database |
| CB\_DB\_PASSWORD
CB\_DB\_PASSWORD\_DEV | No default | The password associated with the database user |
| CB\_DB\_HOST
CB\_DB\_HOST\_DEV
`required` | `localhost` | The host address where the database is located |
| CB\_DB\_PORT
CB\_DB\_PORT\_DEV | `3306` | The port of the hosting address |
| CB\_DB\_DIALECT
CB\_DB\_DIALECT\_DEV
`required` | `mysql` | Which database to use between `mysql` and `postgres` |
| CB\_DB\_CERT
CB\_DB\_CERT\_DEV | No default | If your DB requires an SSL connection, use this variable to provide the string value of the certificate |
| CB\_ENCRYPTION\_KEY
CB\_ENCRYPTION\_KEY\_DEV
`required` | A key will be generate for you during the first run | A secure 32 bytes string which is used to encrypt the data in the database. [Click here](#generate-the-encryption-key) to see how you can generate a key. |
| CB\_OPENAI\_API\_KEY
CB\_OPENAI\_API\_KEY\_DEV | No default | The API key for the OpenAI API |
| CB\_OPENAI\_MODEL
CB\_OPENAI\_MODEL\_DEV | `gpt-5.4-mini` | The model to use for the OpenAI API |
| CB\_REDIS\_HOST
CB\_REDIS\_HOST\_DEV | `localhost` | The host address where the Redis server is located |
| CB\_REDIS\_PORT
CB\_REDIS\_PORT\_DEV | `6379` | The port of the Redis server |
| CB\_REDIS\_PASSWORD
CB\_REDIS\_PASSWORD\_DEV | No default | The password for the Redis server, if required |
| CB\_REDIS\_DB
CB\_REDIS\_DB\_DEV | `0` | The Redis database number to use |
| CB\_REDIS\_CA
CB\_REDIS\_CA\_DEV | No default | The string value of the certificate |
| CB\_REDIS\_CLUSTER\_NODES
CB\_REDIS\_CLUSTER\_NODES\_DEV | No default | The list of Redis cluster nodes. Format: `host:port,host:port,host:port` |
| CB\_RUNTIME\_REDIS\_HOST | No default | Optional dedicated Redis host for the runtime chart and dataset cache. If not set, Chartbrew falls back to `CB_REDIS_HOST` |
| CB\_RUNTIME\_REDIS\_PORT | No default | Optional dedicated Redis port for the runtime chart and dataset cache. If not set, Chartbrew falls back to `CB_REDIS_PORT` |
| CB\_RUNTIME\_REDIS\_PASSWORD | No default | Optional dedicated Redis password for the runtime chart and dataset cache. If not set, Chartbrew falls back to `CB_REDIS_PASSWORD` |
| CB\_RUNTIME\_REDIS\_DB | No default | Optional dedicated Redis database number for the runtime chart and dataset cache. If not set, Chartbrew falls back to `CB_REDIS_DB` |
| CB\_RUNTIME\_REDIS\_CA | No default | Optional CA certificate string for the runtime chart and dataset cache Redis connection. If not set, Chartbrew falls back to `CB_REDIS_CA` |
| CB\_RUNTIME\_REDIS\_CLUSTER\_NODES | No default | Optional list of Redis cluster nodes for the runtime chart and dataset cache. Format: `host:port,host:port,host:port`. If not set, Chartbrew falls back to `CB_REDIS_CLUSTER_NODES` |
| CB\_RUNTIME\_CACHE\_DEBUG | `false` | Enables debug logging for the runtime chart and dataset cache, including cache hits, misses, and key selection |
| CB\_API\_HOST
CB\_API\_HOST\_DEV
`required` | `localhost` | The address where the `server` app is running from. This variable is used internally by the `server` app.
**This value is overwritten by the PORT variable (if set)** |
| CB\_API\_PORT
CB\_API\_PORT\_DEV
`required` | `4019` | The port where the `server` app is running from. This variable is used internally by the `server` app |
| VITE\_APP\_CLIENT\_HOST
VITE\_APP\_CLIENT\_HOST\_DEV
`required` | `http://localhost:4018` | The full address where the `client` app is running from. This variable is used in the `client` app and it's populated during the building process.
`Note` The app needs to be restarted/rebuilt when this value is changed. |
| VITE\_APP\_CLIENT\_PORT
VITE\_APP\_CLIENT\_PORT\_DEV
`required` | `4018` | The port where the `client` app is running from. This variable is used in the `client` app and it's populated during the building process.
`Note` The app needs to be restarted/rebuilt when this value is changed. |
| VITE\_APP\_API\_HOST
VITE\_APP\_API\_HOST\_DEV
`required` | `http://localhost:4019` | The full address where the `server` app is running. This variable is used by the `client` app.
`Note` The app needs to be restarted/rebuilt when this value is changed. |
| CB\_MAIL\_HOST
CB\_MAIL\_HOST\_DEV | `smtp.gmail.com` | The server host of the email provider |
| CB\_MAIL\_USER
CB\_MAIL\_USER\_DEV | No default | The username used to log in on the email server |
| CB\_MAIL\_PASS
CB\_MAIL\_PASS\_DEV | No deafult | The password used to log in on the email server |
| CB\_MAIL\_PORT
CB\_MAIL\_PORT\_DEV | `465` | The port used to connect to the email server |
| CB\_MAIL\_SECURE
CB\_MAIL\_SECURE\_DEV | `true` | `true` - Use SSL to connect to the email server
`false` - Use TLS to connect to the email server |
| CB\_ADMIN\_MAIL
CB\_ADMIN\_MAIL\_DEV | `hello@example.com` | The email address used to send the emails from |
| CB\_RESTRICT\_TEAMS
CB\_RESTRICT\_TEAMS\_DEV | `0` | `0` - New users will have their own team created on sign-up.
`1` - New users don't have a team on signup and can't create their own. |
| CB\_RESTRICT\_SIGNUP
CB\_RESTRICT\_SIGNUP\_DEV | `0` | `0` - Anyone can create accounts from the signup page
`1` - New users can only sign up using invite links |
| CB\_GOOGLE\_CLIENT\_ID
CB\_GOOGLE\_CLIENT\_ID\_DEV | No default | Google app Client ID generated from the Console
(Needed for Google integrations) |
| CB\_GOOGLE\_CLIENT\_SECRET
CB\_GOOGLE\_CLIENT\_SECRET\_DEV | No default | Google app Client Secret generated from the Console
(Needed for Google integrations) |
| CB\_BACKEND\_WORKERS
CB\_BACKEND\_WORKERS\_DEV | `4` | Some background tasks in Chartbrew will use workers to spread work on multiple threads. Still testing, but for best performance, set this to the number of threads your CPU has |
| CB\_OPENAI\_API\_KEY
CB\_OPENAI\_API\_KEY\_DEV | No default | The API key for the OpenAI API |
| CB\_OPENAI\_MODEL
CB\_OPENAI\_MODEL\_DEV | `gpt-5.4-mini` | The model to use for the OpenAI API |
| VITE\_APP\_SLACK\_CLIENT\_ID | No default | The client ID of the Slack app is used in both server and client apps |
| CB\_SLACK\_CLIENT\_SECRET | No default | The client secret of the Slack app is used in both server and client apps |
| CB\_SLACK\_SIGNING\_SECRET | No default | The signing secret of the Slack app is used in both server and client apps |
| CB\_ALLOW\_PRIVATE\_NETWORK\_CALLS | `false` | `false` - API calls to private networks are not allowed
`true` - Allow calls to private networks |
### Generate the encryption key
You will need a 32 bytes AES encryption key for the `CB_ENCRYPTION_KEY` variable. Chartbrew generates both `CB_ENCRYPTION_KEY` and `CB_ENCRYPTION_KEY_DEV` for you during the first run, but if you wish to have control over the value, you can generate it yourself.
Run the following command to generate a valid key:
```sh theme={null}
node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
```