class WcoHosting::Serverhost

def add_nginx_site app
  @obj = app
  ac   = ActionController::Base.new
  ac.instance_variable_set( :@app, app )
  rendered_str = ac.render_to_string("wco_hosting/scripts/nginx_site.conf")
  Wco::Log.puts! rendered_str, 'add_nginx_site rendered_str', obj: @obj
  file = Tempfile.new('prefix')
  file.write rendered_str
  file.close
  cmd = "scp #{file.path} #{ssh_host}:/etc/nginx/sites-available/#{app.service_name}.conf "
  do_exec cmd
  cmd = "ssh #{ssh_host} 'ln -s /etc/nginx/sites-available/#{app.service_name}.conf /etc/nginx/sites-enabled/#{app.service_name}.conf ' "
  do_exec cmd
  cmd = "ssh #{ssh_host} 'nginx -s reload ' "
  do_exec cmd
end