Puede ocurrir que nos encontremos con un monton de errores en los logs del estilo de: Dec 21 20:25:29 hostname ndo2db: Error: mysql_query() failed for 'INSERT INTO nagios_hostchecks SET instance_id='1', host_object_id='65', check_type='0', is_raw_check='0', current_check_attempt='1', max_check_attempts='5', state='0', state_type='1', start_time=FROM_UNIXTIME(1292959529), start_time_usec='93880', end_time=FROM_UNIXTIME(0), end_time_usec='0', timeout='30', early_timeout='0', execution_time='0.000000', latency='0.093000', return_code='0', output='', long_output='', perfdata='', command_object_id='1', command_args='', command_line='/usr/lib/nagios/plugins/check_ping -H AA.BBB.CCC.DD -w ...