itamae/cookbooks/nginx/setup.rb

# Log rotation setting:
remote_file '/etc/logrotate.d/nginx' do
  owner 'root'
  group 'root'
  mode '644'
end

# Deploy the systemd file:
remote_file '/lib/systemd/system/nginx.service' do
  owner 'root'
  group 'root'
  mode '644'
end

# Firewall Setting:
%w( 80/tcp 443/tcp ).each do |port|
  execute "ufw allow #{port}" do
    user 'root'

    not_if "LANG=c ufw status | grep #{port}"

    notifies :run, 'execute[ufw reload-or-enable]'
  end
end

execute 'ufw reload-or-enable' do
  user 'root'
  command 'LANG=C ufw reload | grep skipping && ufw --force enable || exit 0'

  action :nothing
end

# Service setting:
service 'nginx' do
  action [ :enable, :start ]
end

# Deploy `promtail` config file:
HOSTNAME = run_command('uname -n').stdout.chomp

template '/etc/promtail/nginx.yaml' do
  owner 'root'
  group 'root'
  mode '644'

  variables(HOSTNAME: HOSTNAME, LOKIENDPOINT: node['promtail']['lokiendpoint'])
end

# Deploy the `systemd` configuration:
remote_file '/lib/systemd/system/promtail-nginx.service' do
  owner 'root'
  group 'root'
  mode '644'
end

# Service setting:
service 'promtail-nginx' do
  action [ :enable, :restart ]
end