Session Open Group Setup

An express REST API for serving persistence history public chat rooms for Session. Open groups are not limited in size as they are hosted by your own server. Please be aware these are PUBLIC groups and sensitive private information should not be shared in this group format.

It's run by 2 daemons, the platform servers providing an ADN standard REST API and another with Session specific behaviors (crypto-key registration and enhanced moderation functions).


  • Hosting with a public IP address
  • make sure you have a working DNS hostname that points to your public IP address.
  • an email address (LetsEncrypt requires this)
  • We recommend you have at least 4GB of free disk space and 512mb of ram (it may runs with less but use at your own risk)


1. Install docker (debian)

for non-debian-based installation instructions of Docker:

Use this guide for additional troubleshooting help: or

Remove any possibly previously installed docker installations

sudo apt-get remove docker docker-engine

Install official docker repo

  • sudo apt-get update
  • sudo apt-get install apt-transport-https ca-certificates curl gnupg2 software-properties-common

For Debian

  • curl -fsSL | sudo apt-key add -
  • sudo add-apt-repository "deb [arch=amd64] $(lsb_release -cs) stable"

For Ubuntu

  • curl -fsSL | sudo apt-key add -
  • sudo add-apt-repository "deb [arch=amd64] $(lsb_release -cs) stable"

Install and test docker

  • apt-get update
  • sudo apt-get install docker-ce
  • To check to make sure it's all working: docker run hello-world

2. Install docker-compose

Create docker-compose script

curl -L "$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

make sure it's executable

chmod u+x /usr/local/bin/docker-compose

3. Install SOGS

  • git clone

Install SOGS git submodules

  • cd session-open-group-server
  • git submodule init
  • git submodule update

Make sure permissions on acme.json is correct

chmod 600 docker/acme.json

Set up config

  • cp loki_template.ini loki.ini

Get your PUBKEY

  • replace PUBKEY with your key and run echo "PUBKEY=true" >> loki.ini

Start it

Replace [email protected] with your email address and yourssl.domain.tld with your public facing hostname. These are required for getting an SSL certification from LetsEncrypt which we will attempt to automatically do for you.

[email protected] DOMAIN=yourssl.domain.tld docker-compose up -d

Upgrade instruction

  • make sure you're in the loki-messenger-public-server directory
  • [email protected] DOMAIN=yourssl.domain.tld docker-compose down to stop it from running
  • git pull to grab the latest source and configs
  • git submodule init to grab any submodule changes
  • git submodule update to grab any platform/nodepomf changes
  • [email protected] DOMAIN=yourssl.domain.tld docker-compose build to update the local docker images
  • [email protected] DOMAIN=yourssl.domain.tld docker-compose up -d to restart the server

Getting Help

If something in this guide isn’t making sense, or if you’re running into issues that you can’t identify on your own, the first place to go would be the #lokinet-help channel on discord. Alternatively, you can find help on our other communication channels such as telegram, twitter, or reddit.

Reporting Bugs

After you have sought out for help through our communication channels and have not come to any solutions we recommend opening up a issue ticket on the Session public server repository.

Please use the following Github Issue Template for any github issues created: Github Issue Template Example.