How to install Discourse without Docker
I purchased a dead cheap VPS for 5$ a month which come with 2GB of memory, 80GB disk space and quite decent CPU. The downside is they uses a very old kernel (
2.6.32-042stab108.8 to be specific) while the official Discourse installation guide
use Docker which require a more recent one (3.x).
Docker sure makes it easy to install Discourse but it’s the only reason that newer kernel is required. After a quick research, I found this Ansible playbook. It looks well-maintained (last commit was Dec 2015).
It doesn’t work right out of the box for me but after some debugging, I was able to install Discourse just fine. There are few things to note though.
On default Ubuntu installation, Apache will use port 80, making nginx fails to start. You will have to stop/uninstall Apache2 in advance (
sudo apt-get remove apache2)
On some VPS providers, IPv6 is not enabled so you will also need to tweak nginx configuration to bind to IPv4 only.
localeis not set, the script will fail as well. This command
localedef -v -c -i en_US -f UTF-8 en_US.UTF-8fixes it.
discourse is the default username if you use the above playbook. Replace it if needed.
cd /var/www/discouse/plugins # git clone the plugin you want to install sudo /home/discourse/.rbenv/shims/bundle exec rake db:migrate /var/www/discourse RAILS_ENV=production sudo /home/discourse/.rbenv/shims/bundle exec rake assets:precompile /var/www/discourse RAILS_ENV=production sudo systemctl reload discourse-unicorn.service
Bonus: btw, Let’s Encrypt offers free SSL. Setting it up is really easy too.