Hey Thomasz,
It works for me, can you doublecheck that you still have a problem ? I will paste below how i use the tool, maybe your usage varies:
# Step 1 - Add localhost to downtimes
=============================
$ pynag downtime where host_name=localhost
object_type shortname filename
--------------------------------------------------------------------------------
host localhost /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/CPU load /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/CPU utilization /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/CUPS Queue 2h-mid-lj9500-litur /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/CUPS Queue Canon-iP2600-series /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/CUPS Queue HP-Color-LaserJet-3800 /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Check_MK /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Disk IO SUMMARY /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Kernel Context Switches /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Kernel Major Page Faults /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Kernel Process Creations /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Memory used /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Mount options of / /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Number of threads /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Postfix Queue /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Reverse Lookup /etc/nagios3/conf.d/check_mk/localhost-dns.cfg
service localhost/Swap Usage /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/TCP Connections /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/Uptime /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/fs_/ /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
service localhost/nagios.cfg /etc/nagios3/conf.d/check_mk/check_mk_objects.cfg
----------22 objects matches search condition-----------------------------------
Schedule downtime for these 22 objects ? (y/N) y
Downtime host: localhost
Downtime service: localhost/CPU load
Downtime service: localhost/CPU utilization
Downtime service: localhost/CUPS Queue 2h-mid-lj9500-litur
Downtime service: localhost/CUPS Queue Canon-iP2600-series
Downtime service: localhost/CUPS Queue HP-Color-LaserJet-3800
Downtime service: localhost/Check_MK
Downtime service: localhost/Disk IO SUMMARY
Downtime service: localhost/Kernel Context Switches
Downtime service: localhost/Kernel Major Page Faults
Downtime service: localhost/Kernel Process Creations
Downtime service: localhost/Memory used
Downtime service: localhost/Mount options of /
Downtime service: localhost/Number of threads
Downtime service: localhost/Postfix Queue
Downtime service: localhost/Reverse Lookup
Downtime service: localhost/Swap Usage
Downtime service: localhost/TCP Connections
Downtime service: localhost/Uptime
Downtime service: localhost/fs_/
Downtime service: localhost/nagios.cfg
# Step 2) Verify that all services are in downtime:
====================================
$ pynag downtime --list where host_name=localhost
id host_name service_description comment
--------------------------------------------------------------------------------
1532 localhost Downtime Scheduled from pynag
1533 localhost CPU load Downtime Scheduled from pynag
1534 localhost CPU utilization Downtime Scheduled from pynag
1535 localhost CUPS Queue 2h-mid-lj9500-litur Downtime Scheduled from pynag
1536 localhost CUPS Queue Canon-iP2600-series Downtime Scheduled from pynag
1537 localhost CUPS Queue HP-Color-LaserJet-3800 Downtime Scheduled from pynag
1538 localhost Check_MK Downtime Scheduled from pynag
1539 localhost Disk IO SUMMARY Downtime Scheduled from pynag
1540 localhost Kernel Context Switches Downtime Scheduled from pynag
1541 localhost Kernel Major Page Faults Downtime Scheduled from pynag
1542 localhost Kernel Process Creations Downtime Scheduled from pynag
1543 localhost Memory used Downtime Scheduled from pynag
1544 localhost Mount options of / Downtime Scheduled from pynag
1545 localhost Number of threads Downtime Scheduled from pynag
1546 localhost Postfix Queue Downtime Scheduled from pynag
1547 localhost Reverse Lookup Downtime Scheduled from pynag
1548 localhost Swap Usage Downtime Scheduled from pynag
1549 localhost TCP Connections Downtime Scheduled from pynag
1550 localhost Uptime Downtime Scheduled from pynag
1551 localhost fs_/ Downtime Scheduled from pynag
1553 localhost nagios.cfg Downtime Scheduled from pynag
----------22 objects matches search condition-----------------------------------
# Step 3, remove all downtimes of host localhost:
=====================================
$ pynag downtime --remove where host_name=localhost
id host_name service_description comment
--------------------------------------------------------------------------------
1532 localhost Downtime Scheduled from pynag
1533 localhost CPU load Downtime Scheduled from pynag
1534 localhost CPU utilization Downtime Scheduled from pynag
1535 localhost CUPS Queue 2h-mid-lj9500-litur Downtime Scheduled from pynag
1536 localhost CUPS Queue Canon-iP2600-series Downtime Scheduled from pynag
1537 localhost CUPS Queue HP-Color-LaserJet-3800 Downtime Scheduled from pynag
1538 localhost Check_MK Downtime Scheduled from pynag
1539 localhost Disk IO SUMMARY Downtime Scheduled from pynag
1540 localhost Kernel Context Switches Downtime Scheduled from pynag
1541 localhost Kernel Major Page Faults Downtime Scheduled from pynag
1542 localhost Kernel Process Creations Downtime Scheduled from pynag
1543 localhost Memory used Downtime Scheduled from pynag
1544 localhost Mount options of / Downtime Scheduled from pynag
1545 localhost Number of threads Downtime Scheduled from pynag
1546 localhost Postfix Queue Downtime Scheduled from pynag
1547 localhost Reverse Lookup Downtime Scheduled from pynag
1548 localhost Swap Usage Downtime Scheduled from pynag
1549 localhost TCP Connections Downtime Scheduled from pynag
1550 localhost Uptime Downtime Scheduled from pynag
1551 localhost fs_/ Downtime Scheduled from pynag
1553 localhost nagios.cfg Downtime Scheduled from pynag
----------22 objects matches search condition-----------------------------------
Remove these 22 downtimes? (y/N) y
Removing downtime 1532:
Removing downtime 1533:
Removing downtime 1534:
Removing downtime 1535:
Removing downtime 1536:
Removing downtime 1537:
Removing downtime 1538:
Removing downtime 1539:
Removing downtime 1540:
Removing downtime 1541:
Removing downtime 1542:
Removing downtime 1543:
Removing downtime 1544:
Removing downtime 1545:
Removing downtime 1546:
Removing downtime 1547:
Removing downtime 1548:
Removing downtime 1549:
Removing downtime 1550:
Removing downtime 1551:
Removing downtime 1552:
Removing downtime 1553:
# Step 4) Verify all downtimes have disappeared:
=====================================
$ pynag downtime --list where host_name=localhost
id host_name service_description comment
--------------------------------------------------------------------------------
----------0 objects matches search condition------------------------------------