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rails_server logo

What is it?

rails_server is a bunch of Ansible playbooks, that helps you to setup new server and to deploy Rails application along with database dump.

What technologies it covers?

  • Ubuntu 16.04 or newer (for 20.04 please use ubuntu-20-04 branch
  • ZSH, Oh My ZSH!
  • PostgreSQL
  • NodeJS
  • ImageMagick
  • Yarn
  • Rust
  • Redis
  • RVM, Ruby MRI
  • Monit
  • Let's Encrypt (certbot)

Also there are some hardcoded limits:

  • Ubuntu and PostgreSQL user can be named only as deploy

Setup

cd your-rails-project-folder
git clone git@github.com:gambala/rails_server.git server
echo /server >> .gitignore
git commit -am "Gitignore server folder"
cp server/hosts.all.example.yml server/hosts.all.yml
cp server/hosts.production.example.yml server/hosts.production.yml
ansible-galaxy install -r server/requirements.yml

Usage

With brand new server

  1. Create server on your hosting
  2. Update credentials in server/hosts files and in capistrano config files
  3. Run commands:
ansible-playbook server/setup-initial.yml -i server/hosts.all.yml -i server/hosts.production.yml -e 'ansible_port=22'
ansible-playbook server/setup-server.yml -i server/hosts.all.yml -i server/hosts.production.yml

With configured server

  1. Place your cap templates in the proper folder
  • /config/deploy/templates/nginx_conf.erb
  • /config/deploy/templates/puma.rb.erb
  1. Run commands:
ansible-playbook server/setup-app.yml -i server/hosts.all.yml -i server/hosts.production.yml
cap production setup
cap production puma:config
cap production puma:nginx_config
cap production deploy
  1. Ssh to your new server and run command:
sudo service nginx restart

or for new server:

sudo service nginx start

If you stuck with errors, you can diagnose your nginx config with:

sudo nginx -c /etc/nginx/nginx.conf -t

With data from old server

  1. Ssh to your old server
  2. Make DB dump and uploads (from carrierwave for example) archive:
pg_dump --clean --format c --verbose --blobs --no-owner --file project_production.dump project_production
tar -czvf project_production_uploads.tar.gz apps/app_name/shared/public/uploads/
  1. Download these files to your server/files folder:
scp -P 4000 deploy@site.com:project_production.dump server/files
scp -P 4000 deploy@site.com:project_production_uploads.tar.gz server/files
  1. Run role:
ansible-playbook server/restore-data.yml -i server/hosts.all.yml -i server/hosts.production.yml

Under the hood

Each playbook runs specific roles, listed below.

setup-initial.yml

  • Installs Python2 in order to allow Ansible do all the work
  • Installs pip, python packet manager
  • Creates deploy user which is our main user for application deployments
  • Configures git, zsh and oh-my-zsh for root user

setup-server.yml

  • Configures zsh and oh-my-zsh for deploy user
  • Adds en_US.UTF-8 locale
  • Installs curl, htop, landscape-common, ncdu and vim
  • Installs and configures fail2ban
  • Installs NodeJS
  • Adds 2GB swapfile
  • Installs Nginx with specific configs (one of them includes the code for certbot)
  • Installs ImageMagick, Yarn and Rust
  • Installs Redis
  • Installs RVM and Ruby
  • Installs PostgreSQL and creates deploy superuser in it
  • Installs Monit for server state monitoring and notifications (RAM, HDD, etc)
  • Installs Certbot and registers in it with email from hosts

setup-app.yml

  • Creates PostgreSQL database for your Rails application
  • Issues ssl certificates with certbot for domains from your hosts
  • Automates daily DB backups with uploading to AWS S3

restore-data.yml

  • Uploads database dump and restores it on server
  • Uploads uploads archive and unzip in on server

Additional steps

Turn monit web interface on

Run sudo nano /etc/monit/monitrc and write this to file:

set daemon 30

set logfile /var/log/monit.log

set idfile /var/lib/monit/id

set statefile /var/lib/monit/state

set eventqueue
    basedir /var/lib/monit/events # set the base directory where events will be stored
    slots 100 # optionally limit the queue size

set httpd port 2812 and
    allow admin:monit      # require user 'admin' with password 'monit'

include /etc/monit/conf.d/*
include /etc/monit/conf-enabled/*

Then run sudo monit reload.

Add nginx to monit

Run sudo nano /etc/monit/conf-enabled/nginx and write this:

 check process nginx with pidfile /var/run/nginx.pid
   group www
   group nginx
   start program = "/etc/init.d/nginx start"
   stop program = "/etc/init.d/nginx stop"
#  if failed port 80 protocol http request "/" then restart
   if 5 restarts with 5 cycles then timeout
   depend nginx_bin
   depend nginx_rc

 check file nginx_bin with path /usr/sbin/nginx
   group nginx
   include /etc/monit/templates/rootbin

 check file nginx_rc with path /etc/init.d/nginx
   group nginx
   include /etc/monit/templates/rootbin

Then run sudo monit reload.

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Ansible playbooks for VPS servers provisioning for Rails apps

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