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mirror of https://github.com/etesync/server synced 2024-11-22 16:58:08 +00:00

Created a page detailing a possible uWSGI & Nginx setup.

Simon Vandevelde 2020-02-02 21:16:43 +01:00
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## uWSGI
It's not a good idea to just run the basic debug server and expose it to the outside world.
Instead, a component stack should be built.
The [uWSGI docs](https://uwsgi-docs.readthedocs.io/en/latest/tutorials/Django_and_nginx.html) state the following:
>A web server faces the outside world. It can serve files (HTML, images, CSS, etc) directly from the file system. However, it cant talk directly to Django applications; it needs something that will run the application, feed it requests from web clients (such as browsers) and return responses.
>A Web Server Gateway Interface - WSGI - does this job. WSGI is a Python standard.
>uWSGI is a WSGI implementation. In this tutorial we will set up uWSGI so that it creates a Unix socket, and serves responses to the web server via the uwsgi protocol. At the end, our complete stack of components will look like this:
> `the web client <-> the web server <-> the socket <-> uwsgi <-> Django`
Note that different WSGI's exist and can be used, like for example Gunicorn.
However, in this tutorial uWSGI is used.
### Installing uWSGI
Installation of uWSGI is easily done via pip.
Root needs access to uWSGI later, so install it as superuser.
```
sudo pip3 install wsgi
```
### Testing uWSGI
We can already test whether our uWSGI installation works.
```
cd path/to/server-skeleton
source venv/bin/activate # In case you haven't activated the venv yet.
uwsgi --http :8000 --module etesync_server.wsgi --virtualenv venv
```
This command runs the EteSync module, exposes it on port 8000 and uses the `venv` virtual environment.
You can now surf to the IP address followed by port 8000 in the browser to check if it works (you should see "It works!")
## Nginx
Nginx will form our proper web server.
### Installing Nginx
Installation if done via apt.
```
sudo apt-get install nginx
```
### Setup Nginx
First of all, create Django's static files so that Nginx can access them.
```
./manage.py collectstatic
```
Now we need to configure Nginx, using a configuration file.
Create a new file called `etesync_nginx.conf` and paste the following into it.
Don't forget to change `server_name` and the path to `/static`.
```
# mysite_nginx.conf
# the upstream component nginx needs to connect to
upstream django {
# server unix:///tmp/etesync_server.sock; # for a file socket
server 127.0.0.1:8001; # for a web port socket (we'll use this first)
}
# configuration of the server
server {
# the port your site will be served on
listen 8000;
# the domain name it will serve for
server_name example.com; # substitute your machine's IP address or domain name
charset utf-8;
# max upload size
client_max_body_size 75M; # adjust to taste
location /static {
alias /path/to/server_skeleton/static # Project's static files
}
# Finally, send all non-media requests to the Django server.
location / {
uwsgi_pass django;
include /etc/nginx/uwsgi_params; # the uwsgi_params file, this path by default
}
}
```
Move this file to `/etc/nginx/sites-available` and symlink it to `/etc/nginx/sites-enabled`.
After restarting Nginx and launching uWSGI (on port 8001), you should be able to surf to the same url as before and see "It works!".
```
sudo cp etesync_nginx.conf /etc/nginx/sites-available/
sudo ln -s /etc/nginx/sites-available/etesync_nginx.conf /etc/nginx/sites-enables/etesync_nginx.conf
systemctl restart nginx
uwsgi --socket :8001 --module etesync_server.wsgi
```
If you encounter any errors, the Nginx log is located in `/var/log/nginx/error.log`.
### Finalize Nginx & uWSGI setup
For testing purposes, uWSGI exposes the Django application on port 8001.
A more elegant solution would be to expose the application using a file socket.
Change `/etc/nginx/sites-available/etesync_nginx.conf` to accept file sockets by commenting in `server unix:///tmp/etesync_server.sock;` and commenting out `server 127.0.0.1:8001;`.
The first part should now look like this:
```
# the upstream component nginx needs to connect to
upstream django {
server unix:///tmp/etesync_server.sock; # for a file socket
# server 127.0.0.1:8001; # for a web port socket (we'll use this first)
}
```
This will create a file socket at `/tmp/etesync_server.sock`.
Now, configure uWSGI to also work using a file socket.
Because a lot of parameters are needed, create a `uwsgi.ini` and copy the following in it.
Don't forget to replace `<user>` by the name of the user for the server.
```
[uwsgi]
chdir = /path/to/server-skeleton/
socket = /tmp/etesync_server.sock
chown-socket = <user>:www-data
chmod-socket = 660
module = etesync_server.wsgi
master = true
uid = <user>
virtualenv = venv
```
Now to run uWSGI, all you need to do is tell it to use the `.ini` server.
Restart Nginx and check if everything still works.
```
systemctl restart nginx
uwsgi --ini uwsgi.ini
```
### That's it!
You now have a working EteSync server over HTTP.
Don't forget to change `allowed_hosts` to your domain name in `etesync-server.ini` and to set `server_name` to your domain name in `/etc/nginx-sites-available/etesync.conf`.
An optional next step is to have your uWSGI run automatically at boot.
It is also *highly* recommended **to enable SSL for your EteSync server!**
More info on both of these can be found in the wiki.