Default Chef service provider for Centos 6 is totally fucked up. Fixing the damage with this

scribd_redhat_service_provider.rb

# Usage:
#
# service svc_name do
#   provider Chef::Provider::Service::ScribdRedhat if node[:platform_family] == 'rhel' && node[:platform_version].to_i < 7
#   supports status: true, restart: true, stop: true
#   action :enable
# end
#
# or enable globally with
#
# Chef::Platform.set(platform: :redhat, version: '< 7', resource: :service, provider: Chef::Provider::Service::ScribdRedhat)
#

class Chef::Provider::Service::ScribdRedhat < Chef::Provider::Service::Redhat
  def define_resource_requirements
    super

    requirements.assert(:start, :enable, :reload, :restart) do |a|
      a.assertion { @service_starting }
      a.failure_message Chef::Exceptions::Service, "#{@new_resource}: service does not start automatically, probably by mistake!"
      a.whyrun "Assuming service would be automatically started."
    end
  end

  def load_current_resource
    super

    @service_starting = true
    if ::File.exists?("/sbin/chkconfig") && !@service_missing && service_fucked_up?(@current_resource.enabled)
      unfuck_the_fucking_service!(@current_resource.enabled)
    end

    @current_resource
  end

  def unfuck_the_fucking_service!(enabled)
    svc = @current_resource.service_name
    Chef::Log.warn("Service #{svc} is fucked up: unfucking")

    if enabled
      Chef::Log.warn("Service #{svc} is fucked up: expected to be enabled, enabling")
      enable_service
    else
      Chef::Log.warn("Service #{svc} is fucked up: expected to be disabled, disabling")
      disable_service
    end
  end

  def service_fucked_up?(enabled)
    svc = @current_resource.service_name
    ::File.read("/etc/rc.d/init.d/#{svc}").each_line do |l|
      if l =~ /#\s*chkconfig:\s+([-\d]+)\s+(\d+)\s+(\d+)/
        runlevels, start_priority, kill_priority = $1, $2.to_i, $3.to_i

        srunlevels = if runlevels == '-'
          @service_starting = false if l !~ /DO NOT START AUTOMATICALLY/
          []
        elsif !enabled
          []
        else
          runlevels.scan(/./).map(&:to_i).sort
        end
        krunlevels = enabled ?  (0..6).to_a - srunlevels : []

        start_runlevels = get_service_runlevels('S')
        # Do we have start script on all requested run levels?
        if start_runlevels.keys.sort != srunlevels
          Chef::Log.warn("Service #{svc} is fucked up: expected to start on levels #{srunlevels.inspect}, actually starts on #{start_runlevels.keys.sort.inspect}")
          return true
        end
        start_runlevels.each do |level, priorities|
          # More than one start script for the service?
          if priorities.size > 1
            Chef::Log.warn("Service #{svc} is fucked up: there multiple start scripts on level #{level} with priorities #{priorities.inspect}")
            return true
          end
          # Start priority does not match?
          if priorities[0] != start_priority
            Chef::Log.warn("Service #{svc} is fucked up: on level #{level} start priority is #{priorities[0].inspect}, but #{start_prioriry.inspect} expected")
            return true
          end
        end

        kill_runlevels = get_service_runlevels('K')
        # Do we have kill script on all requested run levels?
        if kill_runlevels.keys.sort != krunlevels
          Chef::Log.warn("Service #{svc} is fucked up: expected to stop on levels #{krunlevels.inspect}, actually stops on #{kill_runlevels.keys.sort.inspect}")
          return true
        end
        kill_runlevels.each do |level, priorities|
          # More than one kill script for the service?
          if priorities.size > 1
            Chef::Log.warn("Service #{svc} is fucked up: there multiple stop scripts on level #{level} with priorities #{priorities.inspect}")
            return true
          end
          # Stop priority does not match?
          if priorities[0] != kill_priority
            Chef::Log.warn("Service #{svc} is fucked up: on level #{level} stop priority is #{priorities[0].inspect}, but #{kill_prioriry.inspect} expected")
            return true
          end
        end

        return false
      end
    end

    # chkconfig line is missing, probably ok...
    return false
  end

  def get_service_runlevels(prefix)
    ::Dir["/etc/rc.d/rc?.d/#{prefix}*#{@current_resource.service_name}"].each_with_object({}) do |path, hash|
      _, level, priority = path.match(%r{/rc\.d/rc(\d)\.d/#{prefix}(\d+)}).to_a
      hash[level.to_i] ||= []
      hash[level.to_i] << priority.to_i
    end
  end

  def enable_service()
    shell_out! "/sbin/chkconfig #{@new_resource.service_name} reset"
  end

  def disable_service()
    shell_out! "/sbin/chkconfig --del #{@new_resource.service_name}"
  end
end