March 4, 2020

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jitsi/docker-jitsi-meet

jitsi/docker-jitsi-meet

Jitsi Meet on Docker

repo name jitsi/docker-jitsi-meet
repo link https://github.com/jitsi/docker-jitsi-meet
homepage https://hub.docker.com/u/jitsi/
language JavaScript
size (curr.) 507 kB
stars (curr.) 490
created 2018-07-17
license Apache License 2.0

Jitsi Meet on Docker

Jitsi is a set of Open Source projects that allows you to easily build and deploy secure videoconferencing solutions.

Jitsi Meet is a fully encrypted, 100% Open Source videoconferencing solution that you can use all day, every day, for free — with no account needed.

This repository contains the necessary tools to run a Jitsi Meet stack on Docker using Docker Compose.

Table of contents

Quick start

In order to quickly run Jitsi Meet on a machine running Docker and Docker Compose, follow these steps:

  • Clone this repository to your own computer.
    • git clone https://github.com/jitsi/docker-jitsi-meet && cd docker-jitsi-meet
  • Create a .env file by copying and adjusting env.example, and create required CONFIG directories
    • cp env.example .env
    • mkdir -p ~/.jitsi-meet-cfg/{web/letsencrypt,transcripts,prosody,jicofo,jvb}
  • Run docker-compose up -d.
  • Access the web UI at https://localhost:8443 (or a different port, in case you edited the compose file).

Note that HTTP (not HTTPS) is also available (on port 8000, by default), but that’s e.g. for a reverse proxy setup; direct access via HTTP instead HTTPS leads to WebRTC errors such as Failed to access your microphone/camera: Cannot use microphone/camera for an unknown reason. Cannot read property ‘getUserMedia’ of undefined or navigator.mediaDevices is undefined.

If you want to use jigasi too, first configure your env file with SIP credentials and then run Docker Compose as follows: docker-compose -f docker-compose.yml -f jigasi.yml up

If you want to enable document sharing via Etherpad, configure it and run Docker Compose as follows: docker-compose -f docker-compose.yml -f etherpad.yml up

If you want to use jibri too, first configure host as described in JItsi BRoadcasting Infrastructure configuration section and then run Docker Compose as follows: docker-compose -f docker-compose.yml -f jibri.yml up -d or to use jigasi too: docker-compose -f docker-compose.yml -f jigasi.yml -f jibri.yml up -d

Architecture

A Jitsi Meet installation can be broken down into the following components:

  • A web interface
  • An XMPP server
  • A conference focus component
  • A video router (could be more than one)
  • A SIP gateway for audio calls
  • A Broadcasting Infrastructure for recording or streaming a conference.

The diagram shows a typical deployment in a host running Docker. This project separates each of the components above into interlinked containers. To this end, several container images are provided.

External Ports

The following external ports must be opened on a firweall:

  • 80/tcp for Web UI HTTP (really just to redirect, after uncommenting ENABLE_HTTP_REDIRECT=1 in .env)
  • 443/tcp for Web UI HTTPS
  • 4443/tcp for RTP media over TCP
  • 10000/udp for RTP media over UDP

Also 20000-20050/udp for jigasi, in case you choose to deploy that to facilitate SIP acces.

E.g. on a CentOS/Fedora server this would be done like this (without SIP access):

    $ sudo firewall-cmd --permanent --add-port=80/tcp
    $ sudo firewall-cmd --permanent --add-port=443/tcp
    $ sudo firewall-cmd --permanent --add-port=4443/tcp
    $ sudo firewall-cmd --permanent --add-port=10000/udp
    $ sudo firewall-cmd --reload

Images

  • base: Debian stable base image with the S6 Overlay for process control and the Jitsi repositories enabled. All other images are based off this one.
  • base-java: Same as the above, plus Java (OpenJDK).
  • web: Jitsi Meet web UI, served with nginx.
  • prosody: Prosody, the XMPP server.
  • jicofo: Jicofo, the XMPP focus component.
  • jvb: Jitsi Videobridge, the video router.
  • jigasi: Jigasi, the SIP (audio only) gateway.
  • etherpad: Etherpad, shared document editing addon.
  • jibri: Jibri, the brooadcasting infrastructure.

Design considerations

Jitsi Meet uses XMPP for signalling, thus the need for the XMPP server. The setup provided by these containers does not expose the XMPP server to the outside world. Instead, it’s kept completely sealed, and routing of XMPP traffic only happens on a user defined network.

The XMPP server can be exposed to the outside world, but that’s out of the scope of this project.

Configuration

The configuration is performed via environment variables contained in a .env file. You can copy the provided env.example file as a reference.

IMPORTANT: At the moment, configuration is not regenerated on every container boot, so if you make any changes to your .env file, make sure you remove the configuration directory before starting your containers again.

Variable Description Example
CONFIG Directory where all configuration will be stored /opt/jitsi-meet-cfg
TZ System Time Zone Europe/Amsterdam
HTTP_PORT Exposed port for HTTP traffic 8000
HTTPS_PORT Exposed port for HTTPS traffic 8443
DOCKER_HOST_ADDRESS IP address of the Docker host, needed for LAN environments 192.168.1.1
PUBLIC_URL Public url for the web service https://meet.example.com

NOTE: The mobile apps won’t work with self-signed certificates (the default) see below for instructions on how to obtain a proper certificate with Let’s Encrypt.

Let’s Encrypt configuration

If you plan on exposing this container setup to the outside traffic directly and want a proper TLS certificate, you are in luck because Let’s Encrypt support is built right in. Here are the required options:

Variable Description Example
ENABLE_LETSENCRYPT Enable Let’s Encrypt certificate generation 1
LETSENCRYPT_DOMAIN Domain for which to generate the certificate meet.example.com
LETSENCRYPT_EMAIL E-Mail for receiving important account notifications (mandatory) alice@atlanta.net

In addition, you will need to set HTTP_PORT to 80 and HTTPS_PORT to 443.

SIP gateway configuration

If you want to enable the SIP gateway, these options are required:

Variable Description Example
JIGASI_SIP_URI SIP URI for incoming / outgoing calls test@sip2sip.info
JIGASI_SIP_PASSWORD Password for the specified SIP account passw0rd
JIGASI_SIP_SERVER SIP server (use the SIP account domain if in doubt) sip2sip.info
JIGASI_SIP_PORT SIP server port 5060
JIGASI_SIP_TRANSPORT SIP transport UDP

JItsi BRoadcasting Infrastructure configuration

Before running Jibri, you need to setup an ALSA loopback device on the host. This will not work on a non-Linux host.

For CentOS 7, the module is already compiled with the kernel, so just run:

# configure 5 capture/playback interfaces
echo "options snd-aloop enable=1,1,1,1,1 index=0,1,2,3,4" > /etc/modprobe.d/alsa-loopback.conf
# setup autoload the module
echo "snd_aloop" > /etc/modules-load.d/snd_aloop.conf
# load the module
modprobe snd-aloop
# check that the module is loaded
lsmod | grep snd_aloop

For Ubuntu:

# install the module
apt update && apt install linux-image-extra-virtual
# configure 5 capture/playback interfaces
echo "options snd-aloop enable=1,1,1,1,1 index=0,1,2,3,4" > /etc/modprobe.d/alsa-loopback.conf
# setup autoload the module
echo "snd-aloop" >> /etc/modules
# check that the module is loaded
lsmod | grep snd_aloop

NOTE: if you are running on AWS you may need to reboot your machine to use the generic kernel instead of the “aws” kernel.

If you want to enable Jibri these options are required:

Variable Description Example
ENABLE_RECORDING Enable recording conference to local disk 1

Extended Jibri configuration:

Variable Description Example
JIBRI_RECORDER_USER Internal recorder user for Jibri client connections recorder
JIBRI_RECORDER_PASSWORD Internal recorder password for Jibri client connections passw0rd
JIBRI_RECORDING_DIR Directory for recordings inside Jibri container /config/recordings
JIBRI_FINALIZE_RECORDING_SCRIPT_PATH The finalizing script. Will run after recording is complete /config/finalize.sh
JIBRI_XMPP_USER Internal user for Jibri client connections. jibri
JIBRI_RECORDER_PASSWORD Internal user for Jibri client connections passw0rd
JIBRI_STRIP_DOMAIN_JID Prefix domain for strip inside Jibri (please see env.example for details) muc
JIBRI_BREWERY_MUC MUC name for the Jibri pool jibribrewery
JIBRI_PENDING_TIMEOUT MUC connection timeout 90
JIBRI_LOGS_DIR Directory for logs inside Jibri container /config/logs

For using multiple Jibri instances, you have to select different loopback interfces for each instance manually.

Default the first instance has:

...
slave.pcm "hw:Loopback,0,0"
...
slave.pcm "hw:Loopback,0,1"
...
slave.pcm "hw:Loopback,1,1"
...
slave.pcm "hw:Loopback,1,0"
...

For setup the second instance, run container with changed /home/jibri/.asoundrc:

...
slave.pcm "hw:Loopback_1,0,0"
...
slave.pcm "hw:Loopback_1,0,1"
...
slave.pcm "hw:Loopback_1,1,1"
...
slave.pcm "hw:Loopback_1,1,0"
...

Also you can use numbering id for set loopback interface. The third instance will have .asoundrc that looks like:

...
slave.pcm "hw:2,0,0"
...
slave.pcm "hw:2,0,1"
...
slave.pcm "hw:2,1,1"
...
slave.pcm "hw:2,1,0"
...

Authentication

Authentication can be controlled with the environment variables below. If guest access is enabled, unauthenticated users will need to wait until a user authenticates before they can join a room. If guest access is not enabled, every user will need to authenticate before they can join.

Variable Description Example
ENABLE_AUTH Enable authentication 1
ENABLE_GUESTS Enable guest access 1
AUTH_TYPE Select authentication type (internal, jwt or ldap) internal

Internal authentication

The default authentication mode (internal) uses XMPP credentials to authenticate users. To enable it you have to enable authentication with ENABLE_AUTH and set AUTH_TYPE to internal, then configure the settings you can see below.

Internal users must be created with the prosodyctl utility in the prosody container. In order to do that, first execute a shell in the corresponding container:

docker-compose exec prosody /bin/bash

Once in the container, run the following command to create a user:

prosodyctl --config /config/prosody.cfg.lua register username meet.jitsi passsword

The command then asks for a password interactively.

Authentication using LDAP

You can use LDAP to authenticate users. To enable it you have to enable authentication with ENABLE_AUTH and set AUTH_TYPE to ldap, then configure the settings you can see below.

Variable Description Example
LDAP_URL URL for ldap connection ldaps://ldap.domain.com/
LDAP_BASE LDAP base DN. Can be empty. DC=example,DC=domain,DC=com
LDAP_BINDDN LDAP user DN. Do not specify this parameter for the anonymous bind. CN=binduser,OU=users,DC=example,DC=domain,DC=com
LDAP_BINDPW LDAP user password. Do not specify this parameter for the anonymous bind. LdapUserPassw0rd
LDAP_FILTER LDAP filter. (sAMAccountName=%u)
LDAP_AUTH_METHOD LDAP authentication method. bind
LDAP_VERSION LDAP protocol version 3
LDAP_USE_TLS Enable LDAP TLS 1
LDAP_TLS_CIPHERS Set TLS ciphers list to allow SECURE256:SECURE128
LDAP_TLS_CHECK_PEER Require and verify LDAP server certificate 1
LDAP_TLS_CACERT_FILE Path to CA cert file. Used when server certificate verify is enabled /etc/ssl/certs/ca-certificates.crt
LDAP_TLS_CACERT_DIR Path to CA certs directory. Used when server certificate verify is enabled. /etc/ssl/certs
LDAP_START_TLS Enable START_TLS, requires LDAPv3, URL must be ldap:// not ldaps:// 0

Authentication using JWT tokens

You can use JWT tokens to authenticate users. To enable it you have to enable authentication with ENABLE_AUTH and set AUTH_TYPE to jwt, then configure the settings you can see below.

Variable Description Example
JWT_APP_ID Application identifier my_jitsi_app_id
JWT_APP_SECRET Application secret known only to your token my_jitsi_app_secret
JWT_ACCEPTED_ISSUERS (Optional) Set asap_accepted_issuers as a comma separated list my_web_client,my_app_client
JWT_ACCEPTED_AUDIENCES (Optional) Set asap_accepted_audiences as a comma separated list my_server1,my_server2
JWT_ASAP_KEYSERVER (Optional) Set asap_keyserver to a url where public keys can be found https://example.com/asap
JWT_ALLOW_EMPTY (Optional) Allow anonymous users with no JWT while validating JWTs when provided 0
JWT_AUTH_TYPE (Optional) Controls which module is used for processing incoming JWTs token
JWT_TOKEN_AUTH_MODULE (Optional) Controls which module is used for validating JWTs token_verification

This can be tested using the jwt.io debugger. Use the following samople payload:

{
  "context": {
    "user": {
      "avatar": "https://robohash.org/john-doe",
      "name": "John Doe",
      "email": "jdoe@example.com"
    }
  },
  "aud": "my_jitsi_app_id",
  "iss": "my_jitsi_app_id",
  "sub": "meet.jitsi",
  "room": "*"
}

Shared document editing using Etherpad

You can collaboratively edit a document via Etherpad. In order to enable it, set the config options bellow and run Docker Compose with the additional config file etherpad.yml.

Here are the required options:

Variable Description Example
ETHERPAD_URL_BASE Set etherpad-lite URL http://etherpad.meet.jitsi:9001

Transcription configuration

If you want to enable the Transcribing function, these options are required:

Variable Description Example
ENABLE_TRANSCRIPTIONS Enable Jigasi transcription in a conference 1
GOOGLE_APPLICATION_CREDENTIALS Credentials for connect to Cloud Google API from Jigasi. Path located inside the container /config/key.json

For setting GOOGLE_APPLICATION_CREDENTIALS please read https://cloud.google.com/text-to-speech/docs/quickstart-protocol section “Before you begin” from 1 to 5 paragraph.

Advanced configuration

These configuration options are already set and generally don’t need to be changed.

Variable Description Default value
XMPP_DOMAIN Internal XMPP domain meet.jitsi
XMPP_AUTH_DOMAIN Internal XMPP domain for authenticated services auth.meet.jitsi
XMPP_SERVER Internal XMPP server name xmpp.meet.jitsi xmpp.meet.jitsi
XMPP_BOSH_URL_BASE Internal XMPP server URL for BOSH module http://xmpp.meet.jitsi:5280
XMPP_MUC_DOMAIN XMPP domain for the MUC muc.meet.jitsi
XMPP_INTERNAL_MUC_DOMAIN XMPP domain for the internal MUC internal-muc.meet.jitsi
XMPP_GUEST_DOMAIN XMPP domain for unauthenticated users guest.meet.jitsi
XMPP_RECORDER_DOMAIN Domain for the jibri recorder recorder.meet.jitsi
XMPP_MODULES Custom Prosody modules for XMPP_DOMAIN (comma separated) info,alert
XMPP_MUC_MODULES Custom Prosody modules for MUC component (comma separated) info,alert
XMPP_INTERNAL_MUC_MODULES Custom Prosody modules for internal MUC component (comma separated) info,alert
GLOBAL_MODULES Custom prosodule modules to load in global configuration (comma separated) statistics,alert
GLOBAL_CONFIG Custom configuration string with escaped newlines foo = bar;\nkey = val;
JICOFO_COMPONENT_SECRET XMPP component password for Jicofo s3cr37
JICOFO_AUTH_USER XMPP user for Jicofo client connections focus
JICOFO_AUTH_PASSWORD XMPP password for Jicofo client connections passw0rd
JVB_AUTH_USER XMPP user for JVB MUC client connections jvb
JVB_AUTH_PASSWORD XMPP password for JVB MUC client connections passw0rd
JVB_STUN_SERVERS STUN servers used to discover the server’s public IP stun.l.google.com:19302, stun1.l.google.com:19302, stun2.l.google.com:19302
JVB_PORT UDP port for media used by Jitsi Videobridge 10000
JVB_TCP_HARVESTER_DISABLED Disable the additional harvester which allows video over TCP (rather than just UDP) true
JVB_TCP_PORT TCP port for media used by Jitsi Videobridge when the TCP Harvester is enabled 4443
JVB_BREWERY_MUC MUC name for the JVB pool jvbbrewery
JVB_ENABLE_APIS Comma separated list of JVB APIs to enable none
JIGASI_XMPP_USER XMPP user for Jigasi MUC client connections jigasi
JIGASI_XMPP_PASSWORD XMPP password for Jigasi MUC client connections passw0rd
JIGASI_BREWERY_MUC MUC name for the Jigasi pool jigasibrewery
JIGASI_PORT_MIN Minimum port for media used by Jigasi 20000
JIGASI_PORT_MAX Maximum port for media used by Jigasi 20050
JIGASI_ENABLE_SDES_SRTP Enable SDES srtp 1
JIGASI_SIP_KEEP_ALIVE_METHOD Keepalive method OPTIONS
JIGASI_HEALTH_CHECK_SIP_URI Health-check extension. Jigasi will call it for healthcheck keepalive
JIGASI_HEALTH_CHECK_INTERVAL Interval of healthcheck in milliseconds 300000
JIGASI_TRANSCRIBER_RECORD_AUDIO Jigasi will recordord an audio when transcriber is on true
JIGASI_TRANSCRIBER_SEND_TXT Jigasi will send transcribed text to the chat when transcriber is on true
JIGASI_TRANSCRIBER_ADVERTISE_URL Jigasi post to the chat an url with transcription file true
DISABLE_HTTPS Disable HTTPS, this can be useful if TLS connections are going to be handled outside of this setup 1
ENABLE_HTTP_REDIRECT Redirects HTTP traffic to HTTPS 1
LOG_LEVEL Controls which logs are output from prosody and associated modules info

Running behind NAT or on a LAN environment

If running in a LAN environment (as well as on the public Internet, via NAT) is a requirement, the DOCKER_HOST_ADDRESS should be set. This way, the Videobridge will advertise the IP address of the host running Docker instead of the internal IP address that Docker assigned it, thus making ICE succeed.

The public IP address is discovered via STUN. STUN servers can be specified with the JVB_STUN_SERVERS option.

TODO

  • Support container replicas (where applicable).
  • TURN server.
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