| NC_TOOL_DIR | No | App directory to keep metadata and app related files | Defaults to current working directory. In docker maps to `/usr/app/data/` for mounting volume. |
| NC_PUBLIC_URL | Yes | Used for sending Email invitations | Best guess from http request params |
| NC_AUTH_JWT_SECRET | Yes | JWT secret used for auth and storing other secrets | A Random secret will be generated |
| NC_JWT_EXPIRES_IN | No | JWT token expiry time | `10h` |
| NC_CONNECT_TO_EXTERNAL_DB_DISABLED | No | Disable Project creation with external database | |
| NC_INVITE_ONLY_SIGNUP | No | Allow users to signup only via invite url, value should be any non-empty string. | |
| NC_BACKEND_URL | No | Custom Backend URL | ``http://localhost:8080`` will be used |
| NC_REQUEST_BODY_SIZE | No | Request body size [limit](https://expressjs.com/en/resources/middleware/body-parser.html#limit) | `1048576` |
| NC_EXPORT_MAX_TIMEOUT | No | After NC_EXPORT_MAX_TIMEOUT csv gets downloaded in batches | Default value 5000(in millisecond) will be used |
| NC_GOOGLE_CLIENT_ID | No | Google client id to enable google authentication | |
| NC_GOOGLE_CLIENT_SECRET | No | Google client secret to enable google authentication | |
| NC_MIGRATIONS_DISABLED | No | Disable NocoDB migration | |
| NC_ONE_CLICK | No | Used for Heroku one-click deployment | |
| NC_MIN | No | If set to any non-empty string the default splash screen(initial welcome animation) and matrix screensaver will disable | |
| PORT | No | For setting app running port | `8080` |
| NC_SENTRY_DSN | No | For Sentry monitoring | |
| NC_DISABLE_ERR_REPORT | No | Disable error reporting | |
| AWS_ACCESS_KEY_ID | No | For Litestream - S3 access key id | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 |
| AWS_SECRET_ACCESS_KEY | No | For Litestream - S3 secret access key | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 |
| AWS_BUCKET | No | For Litestream - S3 bucket | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 |
| AWS_BUCKET_PATH | No | For Litestream - S3 bucket path (like folder within S3 bucket) | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 |
| AWS_ACCESS_KEY_ID | No | For Litestream - S3 access key id | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 | |
| AWS_SECRET_ACCESS_KEY | No | For Litestream - S3 secret access key | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 | |
| AWS_BUCKET | No | For Litestream - S3 bucket | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 | |
| AWS_BUCKET_PATH | No | For Litestream - S3 bucket path (like folder within S3 bucket) | If Litestream is configured and NC_DB is not present. SQLite gets backed up to S3 | |
| NC_TOOL_DIR | No | App directory to keep metadata and app related files | Defaults to current working directory. In docker maps to `/usr/app/data/` for mounting volume. | |
| NC_PUBLIC_URL | Yes | Used for sending Email invitations | Best guess from http request params | |
| NC_AUTH_JWT_SECRET | Yes | JWT secret used for auth and storing other secrets | A Random secret will be generated | |
| NC_JWT_EXPIRES_IN | No | JWT token expiry time | `10h` | |
| NC_CONNECT_TO_EXTERNAL_DB_DISABLED | No | Disable Project creation with external database | | |
| NC_INVITE_ONLY_SIGNUP | No | Allow users to signup only via invite url, value should be any non-empty string. | | |
| NC_BACKEND_URL | No | Custom Backend URL | ``http://localhost:8080`` will be used | |
| NC_REQUEST_BODY_SIZE | No | Request body size [limit](https://expressjs.com/en/resources/middleware/body-parser.html#limit) | `1048576` | |
| NC_EXPORT_MAX_TIMEOUT | No | After NC_EXPORT_MAX_TIMEOUT csv gets downloaded in batches | Default value 5000(in millisecond) will be used | |
| NC_DISABLE_TELE | No | Disable telemetry | | |
| NC_GOOGLE_CLIENT_ID | No | Google client id to enable google authentication | | |
| NC_GOOGLE_CLIENT_SECRET | No | Google client secret to enable google authentication | | |