Example ansible deploy with webpacker

after-cleanup-tasks.yml

- name: Bundle install with --deploy
  bundler:
    state: present
    deployment_mode: yes
    chdir: "{{ ansistrano_release_path.stdout }}"
    executable: /home/ubuntu/.rbenv/shims/bundle

- name: Running pending migrations
  shell: $HOME/.rbenv/bin/rbenv exec bundle exec rake db:migrate
  run_once: true
  args:
    chdir: "{{ ansistrano_release_path.stdout }}"

- name: Precompiling assets
  shell: $HOME/.rbenv/bin/rbenv exec bundle exec rake assets:precompile
  args:
    chdir: "{{ ansistrano_release_path.stdout }}"


#########################################
- name: restart puma
  become: yes
  service:
    name: puma.service
    state: restarted
  when: (inventory_hostname in groups['tag_Role_web']|default([])) or (inventory_hostname in groups['tag_Role_web_worker']|default([]))

- name: start nginx
  become: yes
  service:
    name: nginx
    state: started
  when: (inventory_hostname in groups['tag_Role_web']|default([])) or (inventory_hostname in groups['tag_Role_web_worker']|default([]))

- name: restart sidekiq
  become: yes
  service:
    name: sidekiq
    state: restarted
  when: (inventory_hostname in groups['tag_Role_worker']|default([])) or (inventory_hostname in groups['tag_Role_web_worker']|default([]))

- name: restart shoryuken
  become: yes
  service:
    name: shoryuken
    state: restarted
  when: (inventory_hostname in groups['tag_Role_worker']|default([])) or (inventory_hostname in groups['tag_Role_web_worker']|default([]))

deploy.yaml

- name: Deploy rails application
  hosts: tag_Role_web:tag_Role_worker:tag_Role_base:tag_Role_web_worker
  vars:
    ansistrano_deploy_from: "{{ playbook_dir }}" # Where my local project is (relative or absolute path)
    ansistrano_deploy_to: "/var/www/my_app" # Base path to deploy to.
    ansistrano_version_dir: "releases" # Releases folder name
    ansistrano_current_dir: "current" # Softlink name. You should rarely changed it.
    ansistrano_current_via: "symlink" # Deployment strategy who code should be deployed to current path. Options are symlink or rsync
    ansistrano_ensure_shared_paths_exist: yes
    ansistrano_ensure_basedirs_shared_files_exist: yes
    
    ## Run 
    ansistrano_after_cleanup_tasks_file: "{{ playbook_dir }}/deploy-tasks/after-cleanup-tasks.yml"
    
    ansistrano_shared_paths:
      - log           # log -> ../../shared/log
      - tmp           # tmp -> ../../shared/tmp
      - vendor        # vendor -> ../../shared/vendor
      - public/assets # For rails asset pipeline
      - public/packs  # For webpacker
      - node_modules  # For webpacker node_modules -> ../../shared/node_modules
    ansistrano_shared_files:
      # Rails key file, not checked in, but managed in shared/config/master.key https://www.engineyard.com/blog/rails-encrypted-credentials-on-rails-5.2
      - config/master.key # {{current]}/config/master.key -> ../../../shared/config/master.key
  pre_tasks:
    - name: Make shared directories
      become: yes
      file: path={{deploy_directory}}/shared/{{item}} state=directory owner=ubuntu group=ubuntu
      with_items:
        - tmp
        - tmp/pids
        - tmp/cache
        - tmp/sockets
        - log
        - public
        - public/packs
        - vendor
        - vendor/bundle
        - bin
        - config
        - config/puma
        - assets
        - node_modules # Webpacker
  roles:
    - carlosbuenosvinos.ansistrano-deploy

If you're deploying with webpacker, be sure to include node_modules and public/packs, these are new directories that are easy to forget if you coming from rails asset pipeline, if you forget you are going to have a very bad time deploying.

rails/webpacker@7c6e3cc#diff-00e64a8af4dd5116b95476a6691792dcR80