Then edit the `config/production.yaml` file according to your webserver
configuration.
-**PeerTube does not support webserver host change**. Keep in mind your domain name is definitive after your first PeerTube start.
+**PeerTube does not support webserver host change**. Even though [PeerTube CLI can help you to switch hostname](https://docs.joinpeertube.org/#/maintain-tools?id=update-hostjs) there's no official support for that since it is a risky operation that might result in unforeseen errors.
### Webserver
Replace `[peertube-domain]` with the domain for the peertube server.
```
-$ sudo sed -i 's/peertube.example.com/[peertube-domain]/g' /etc/nginx/sites-available/peertube
+$ sudo sed -i 's/${WEBSERVER_HOST}/[peertube-domain]/g' /etc/nginx/sites-available/peertube
+$ sudo sed -i 's/${PEERTUBE_HOST}/localhost:9000/g' /etc/nginx/sites-available/peertube
```
Then modify the webserver configuration file. Please pay attention to the `alias` keys of the static locations.
### TCP/IP Tuning
+A lot of your instance's raw performance is dependent on a properly tuned machine and more specifically, reverse-proxy. We provide support for Nginx and spent a lot of time putting sane defaults in it, but we strongly advise you to follow up with instructions in https://github.com/denji/nginx-tuning as needed.
+
**On Linux**
```