Setting up Discourse for development on Fedora Linux

This guide has been tested against a fresh install of Fedora 31 and 33, but may work on older versions that also use dnf as the package management tool. This is not an official guide but may be useful for other developers using Fedora. This is largely based on the Ubuntu development guide, with changes for the different packages for dnf. The assumption is that you do not have any of the packages installed already, although most will be skipped by the tooling if it is already installed.

If you’re looking to install Discourse for a production environment, prefer the docker install instructions on github.

Install required system and development packages

sudo dnf update
sudo dnf install -y "@development-tools" git rpm-build zlib-devel ruby-devel readline-devel libpq-devel ImageMagick sqlite sqlite-devel nodejs npm curl gcc g++ bzip2 openssl-devel libyaml-devel libffi-devel zlib-devel gdbm-devel ncurses-devel optipng pngquant jhead jpegoptim gifsicle

Install required npm packages

sudo npm install -g svgo yarn

Install and setup postgres

sudo dnf install postgresql-server postgresql-contrib
sudo postgresql-setup --initdb --unit postgresql
sudo systemctl enable postgresql
sudo systemctl start postgresql
sudo -u postgres -i createuser -s $USER

Install and setup redis

sudo dnf install redis
sudo systemctl enable redis
sudo systemctl start redis

Installing rbenv, ruby-build, and ruby

git clone https://github.com/rbenv/rbenv.git ~/.rbenv
cd ~/.rbenv && src/configure && make -C src
~/.rbenv/bin/rbenv init
printf 'export PATH="$HOME/.rbenv/bin:$PATH"\n' >> ~/.bashrc
printf 'eval "$(rbenv init - --no-rehash)"\n' >> ~/.bashrc
source ~/.bashrc
git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
# confirm the install is correct
curl -fsSL https://github.com/rbenv/rbenv-installer/raw/main/bin/rbenv-doctor | bash
rbenv install 2.7.1
rbenv global 2.7.1
rbenv rehash

Install Ruby dependencies

gem update --system
gem install bundler mailcatcher rails

Clone Discourse code

git clone https://github.com/discourse/discourse.git ~/discourse
cd ~/discourse

Install Discourse dependencies

bundle install

Create the required databases and load the schema

bundle exec rake db:create db:migrate
RAILS_ENV=test bundle exec rake db:create db:migrate

Test installation by running the tests

bundle exec rake autospec

Run the application

bundle exec rails server

You should now be able to see the Discourse setup page at http://localhost:3000.

For further setup, see the existing official install guides.

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In Installing rbenv, ruby-build, and ruby, the url to the rbenv-doctor script is not working anymore (apparently the branch has been rename from master to main), the correct command is now:

curl -fsSL https://github.com/rbenv/rbenv-installer/raw/main/bin/rbenv-doctor | bash
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Thanks for the info @nicolas-jaussaud, I’ve updated the OP.

FWIW I now prefer to use chruby and ruby-install over rbenv.

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