Murmur
Murmur (also called Mumble-Server) is the server component for Mumble. Mumble is an open source, cross platform, low-latency, high quality voice over IP (VoIP) client. Mumble uses a client/server architecture and is primarily used by gamers, but can be used for any VoIP purpose.
Installation
First of all we need Murmur in our server.
apk add murmur
Open the murmur.ini configuration file and edit it so murmur can be run by the 'murmur' user created by the package.
vim /var/lib/murmur/murmur.sqlite
Contents of /var/lib/murmur/murmur.sqlite
Now give permissions to the murmur database, so the user 'murmur' can read it.
chown murmur /var/lib/murmur/murmur.sqlite
Setting up SSL certificates
If you already have used Certbot to set up certificates in your web server, then you can easily make a new certificate for a subdomain 'mumble' and add the cert paths to the mumble.ini configuration file. You can use vim and edit the file manually.
vim /etc/murmur.ini
It should look something like this.
Contents of /etc/murmur.ini
Starting up the service
Start the Murmur service.
rc-service murmur start
You can add the Murmur service to the default runlevel.
rc-service add murmur default
In case you don't want Murmur to be default on runlevel, rollback with this command
rc-service delete murmur default