125 lines
5.1 KiB
Markdown
125 lines
5.1 KiB
Markdown
---
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title: Linux
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---
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# Installing DEV on Linux
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## Installing prerequisites
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_These prerequisites assume you're working on a Linux-based operating system,
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but they have only been tested on Ubuntu 18.04._
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### Ruby
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1. If you don't already have a Ruby version manager, we highly recommend
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[rbenv](https://github.com/rbenv/rbenv). Please follow their
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[installation guide](https://github.com/rbenv/rbenv#installation).
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1. With the Ruby version manager, install the Ruby version listed on our badge.
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(ie with rbenv: `rbenv install 2.6.5`)
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For very detailed rbenv installation directions on several distros, please visit
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[DigitalOcean's guide](https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-with-rbenv-on-ubuntu-18-04).
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### Yarn
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There are two ways to install Yarn.
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- Yarn's official
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[installation guide](https://yarnpkg.com/en/docs/install#debian-stable)
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(recommended).
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- [DigitalOcean's detailed tutorial](https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-18-04)
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describes how to install
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[Node version Manager](https://github.com/creationix/nvm). By installing NVM
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you can select a Node version (we recommend either LTS or current); the guide
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will also explain how to install NPM. This way you'll have Node, NPM, and then
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you can run `npm install -g yarn` to install Yarn.
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### PostgreSQL
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1. Run
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`sudo apt update && sudo apt install postgresql postgresql-contrib libpq-dev`.
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1. To test the installation you can run `sudo -u postgres psql` which should
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open a PostgreSQL prompt. Exit the prompt by running `\q` then run
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`sudo -u postgres createuser -s $YOUR_USERNAME` where `$YOUR_USERNAME` is the
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username you are currently logged in as.
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There are more than one ways to setup PostgreSQL. For additional configuration,
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check out our [PostgreSQL setup guide](/installation/postgresql) or the official
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[PostgreSQL](https://www.postgresql.org/) site for further information.
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### ImageMagick
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DEV uses [ImageMagick](https://imagemagick.org/) to manipulate images on upload.
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Please refer to ImageMagick's
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[instructions](https://imagemagick.org/script/download.php) on how to install
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it.
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### Redis
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DEV requires Redis version 4.0 or higher.
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We recommend following Digital Ocean's extensive
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[How To Install and Configure Redis on Ubuntu 16.04](https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-redis-on-ubuntu-16-04)
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(available for other Linux distributions as well) to setup Redis.
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### Elasticsearch
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DEV requires Elasticsearch version 7 or higher.
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We recommend following
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[Elasticsearch's guide for installing on Linux](https://www.elastic.co/guide/en/elasticsearch/reference/7.5/targz.html#install-linux).
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NOTE: Make sure to download the OSS version, `elasticsearch-oss`.
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## Installing DEV
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1. Fork DEV's repository, e.g. <https://github.com/thepracticaldev/dev.to/fork>
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1. Clone your forked repository, e.g.
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`git clone https://github.com/<your-username>/dev.to.git`
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1. Install bundler with `gem install bundler`
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1. Set up your environment variables/secrets
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- Take a look at `Envfile`. This file lists all the `ENV` variables we use
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and provides a fake default for any missing keys. You'll need to get your
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own free [Algolia credentials](/backend/algolia) to get your development
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environment running.
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- The [backend guide](/backend) will show you how to get free API keys for
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additional services that may be required to run certain parts of the app.
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- For any key that you wish to enter/replace:
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1. Create `config/application.yml` by copying from the provided template
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(i.e. with bash:
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`cp config/sample_application.yml config/application.yml`). This is a
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personal file that is ignored in git.
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1. Obtain the development variable and apply the key you wish to
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enter/replace. i.e.:
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```shell
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GITHUB_KEY: "SOME_REAL_SECURE_KEY_HERE"
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GITHUB_SECRET: "ANOTHER_REAL_SECURE_KEY_HERE"
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```
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- If you are missing `ENV` variables on bootup, the
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[envied](https://rubygems.org/gems/envied) gem will alert you with messages
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similar to
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`'error_on_missing_variables!': The following environment variables should be set: A_MISSING_KEY.`.
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- You do not need "real" keys for basic development. Some features require
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certain keys, so you may be able to add them as you go.
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1. Run `bin/setup`
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### Possible error messages
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While installing, you might run into an error due to the `pg` gem requiring
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PostgreSQL libraries. If so, please run `sudo apt-get install libpq-dev` before
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retrying.
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While installing, you might run into an error due to the `sass-rails` gem
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requiring `sassc`, which requires the `g++` compiler. If so, please run
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`sudo apt-get install g++` before retrying.
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While installing, if you didn't install `node` or `nvm` manually, you might run
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into an error due to an older system node version being present, which can cause
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issues while `yarn` is installing packages. If so, you'll need to
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[install `nvm`](https://github.com/nvm-sh/nvm#installation-and-update) and then
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run `nvm install node` to get the most recent node version before retrying.
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