Log if the master is not running

        :rtype: bool
        :return: Whether or not the master is running

def check_master(self):
        '''
        Log if the master is not running

        :rtype: bool
        :return: Whether or not the master is running
        '''
        if not os.path.exists(
                os.path.join(
                    self.opts['sock_dir'],
                    'publish_pull.ipc'
                    )
                ):
            return False
        return True