Installing Mattermost on nixOS Latest

Mattermost is an open-source messaging platform that can be installed on numerous operating systems including nixOS. In this tutorial, we will go over the steps needed to install Mattermost on nixOS Latest.

Prerequisites

• nixOS installed on your machine

Step 1: Enable NixOS Unstable channel

By default, nixOS ships with stable channel as a default. To install Mattermost on our nixOS, we need to enable the unstable channel.

sudo nix-channel --add https://nixos.org/channels/nixos-unstable unstable
sudo nix-channel --update
sudo nixos-rebuild switch --upgrade

Step 2: Install Mattermost

Once we have enabled the unstable channel, we can install Mattermost package using the nix package manager:

sudo nix-env -iA nixos.mattermost

After the installation is complete, check Mattermost service status:

sudo systemctl status mattermost

If the installation is successful, then you should see the Mattermost service running.

Step 3: Configure Mattermost

By default, the Mattermost configuration file is located at /etc/nixos/mattermost/configuration.inc. We can change the necessary configuration options by opening this file in a text editor.

For example, we may want to configure the Mattermost server to listen on a specific address:

MattermostExtraConfiguration = 
    ''    
    ServiceSettings = {
        ListenAddress: ":8080",
     }   
    '';

Once you have made changes in the Mattermost configuration file, save it and restart the Mattermost service.

sudo systemctl restart mattermost

Conclusion

That's it! You should now have Mattermost up and running on your nixOS Latest. You can access the Mattermost web interface by visiting the IP address or hostname of the server and navigate to http://<ip_address>:8080.