This guide helps you ___host your own Jitsi server___. If you want to have a video conference without setting up any infrastructure, use https://meet.jit.si instead.
This document describes the required steps for a quick Jitsi Meet installation on a Debian based GNU/Linux system. Debian 9 (Stretch) or later, and Ubuntu 18.04 (Bionic Beaver) or later are supported out-of-the-box.
On Ubuntu systems, Jitsi requires dependencies from Ubuntu's `universe` package repository. To ensure this is enabled, run `apt-add-repository universe` at the command-line.
_Note_: Many of the installation steps require elevated privileges. If you are logged in using a regular user account, you may need to temporarily increase your permissions (for example, by using `sudo` for individual commands).
If the machine used to host the Jitsi Meet instance has a FQDN (for example `meet.example.org`) already set up in DNS, `/etc/hostname` must contain this FQDN; if this is not the case yet, [change the hostname](https://wiki.debian.org/HowTo/ChangeHostname).
_Note_: The installer will check if [Nginx](https://nginx.org/) or [Apache](https://httpd.apache.org/) is present (in that order) and configure a virtualhost within the web server it finds to serve Jitsi Meet. If none of the above is found it then defaults to Nginx.
If you are already running Nginx on port 443 on the same machine turnserver configuration will be skipped as it will conflict with your current port 443.
During the installation, you will be asked to enter the hostname of the Jitsi Meet instance. If you have a [FQDN](https://en.wikipedia.org/wiki/Fully_qualified_domain_name) for the instance already set up in DNS, enter it there. If you don't have a resolvable hostname, you can enter the IP address of the machine (if it is static or doesn't change).
This hostname (or IP address) will be used for virtualhost configuration inside the Jitsi Meet and also, you and your correspondents will be using it to access the web conferences.
In order to have encrypted communications, you need a [TLS certificate](https://en.wikipedia.org/wiki/Transport_Layer_Security). The easiest way is to use [Let's Encrypt](https://letsencrypt.org/).
_Note_: Jitsi Meet mobile apps *require* a valid certificate signed by a trusted [Certificate Authority](https://en.wikipedia.org/wiki/Certificate_authority) and will not be able to connect to your server if you choose a self-signed certificate.
Note that this script uses the [HTTP-01 challenge type](https://letsencrypt.org/docs/challenge-types/) and thus your instance needs to be accessible from the public internet. If you want to use a different challenge type, don't use this script and instead choose ___I want to use my own certificate___ during jitsi-meet installation.
If the installation is on a machine [behind NAT](https://github.com/jitsi/jitsi-meet/blob/master/doc/faq.md) jitsi-videobridge should configure itself automatically on boot. If three way call does not work further configuration of jitsi-videobridge is needed in order for it to be accessible from outside.
Provided that all required ports are routed (forwarded) to the machine that it runs on. By default these ports are (TCP/443 or TCP/4443 and UDP/10000).
Default deployments on systems using systemd will have low default values for maximum processes and open files. If the used bridge will expect higher number of participants the default values need to be adjusted (the default values are good for less than 100 participants).
To update the values edit `/etc/systemd/system.conf` and make sure you have the following values:
```
DefaultLimitNOFILE=65000
DefaultLimitNPROC=65000
DefaultTasksMax=65000
```
To load the values and check them look [here](#systemd-details) for details.
By default, anyone who has access to your jitsi instance will be able to start a conference: if your server is open to the world, anyone can have a chat with anyone else. If you want to limit the ability to start a conference to registered users, set up a "secure domain". Follow the instructions at https://github.com/jitsi/jicofo#secure-domain.
You should see a web page prompting you to create a new meeting. Make sure that you can successfully create a meeting and that other participants are able to join the session.
If this all worked, then congratulations! You have an operational Jitsi conference service.
Jigasi is a server-side application acting as a gateway to Jitsi Meet conferences. It allows regular [SIP](https://en.wikipedia.org/wiki/Session_Initiation_Protocol) clients to join meetings and provides transcription capabilities.
Launch again a browser with the Jitsi Meet URL and you'll see a telephone icon on the right end of the toolbar. Use it to invite SIP accounts to join the current conference.
The reason for the failure is that sometimes the uninstall script is faster than the process that stops the daemons. The second run of the uninstall command fixes this, as by then the jigasi or jitsi-videobridge daemons are already stopped.
If you run into problems, one thing to try is using a different web browser. Some versions of some browsers are known to have issues with Jitsi Meet. You can also visit https://test.webrtc.org to test your browser's [WebRTC](https://en.wikipedia.org/wiki/WebRTC) support.
