Iretried this test with the 3.0.4 which resulted in the same behavior.
I installed a fresh installation from the sources, with just one
servicecheck.
Nagios works fine till the eventhandler has to be executed:
nagios.log:
> [1225287417] Nagios 3.0.4 starting... (PID=2345)
> [1225287417] Local time is Wed Oct 29 14:36:57 CET 2008
> [1225287417] LOG VERSION: 2.0
> [1225287417] Finished daemonizing... (New PID=2346)
> [1225287547] SERVICE ALERT: localhost;test;CRITICAL;SOFT;1;(null)
> [1225287547] SERVICE EVENT HANDLER:
> localhost;test;(null);(null);(null);sleep
nagios.debug:
> [1225287547.230915] [2048.1] [pid=2346] Done. Final output:
> 'SERVICE ALERT: localhost;test;CRITICAL;SOFT;1;(null)'
> [1225287547.230921] [2048.1] [pid=2346] **** END MACRO PROCESSING
> *************
> [1225287547.231080] [064.1] [pid=2346] Making callbacks (type 9)...
> [1225287547.231091] [001.0] [pid=2346] handle_service_event()
> [1225287547.231098] [064.1] [pid=2346] Making callbacks (type 30)...
> [1225287547.231111] [001.0] [pid=2346] run_global_service_event_handler()
> [1225287547.231118] [001.0] [pid=2346] run_service_event_handler()
> [1225287547.231125] [016.1] [pid=2346] Running event handler for
> service 'test' on host 'localhost'...
> [1225287547.231136] [064.1] [pid=2346] Making callbacks (type 11)...
> [1225287547.231155] [001.0] [pid=2346] get_raw_command_line()
> [1225287547.231163] [2320.2] [pid=2346] Raw Command Input: /bin/bash
> -c "sleep 300"
> [1225287547.231170] [2320.2] [pid=2346] Expanded Command Output:
> /bin/bash -c "sleep 300"
> [1225287547.231177] [016.2] [pid=2346] Raw service event handler
> command line: /bin/bash -c "sleep 300"
> [1225287547.231184] [001.0] [pid=2346] process_macros()
> [1225287547.231190] [2048.1] [pid=2346] **** BEGIN MACRO PROCESSING
> ***********
> [1225287547.231197] [2048.1] [pid=2346] Processing: '/bin/bash -c
> "sleep 300"'
> [1225287547.231203] [2048.2] [pid=2346] Processing part: '/bin/bash
> -c "sleep 300"'
> [1225287547.231211] [2048.2] [pid=2346] Not currently in macro.
> Running output (24): '/bin/bash -c "sleep 300"'
> [1225287547.231218] [2048.1] [pid=2346] Done. Final output:
> '/bin/bash -c "sleep 300"'
> [1225287547.231234] [2048.1] [pid=2346] **** END MACRO PROCESSING
> *************
> [1225287547.231241] [016.2] [pid=2346] Processed service event handler
> command line: /bin/bash -c "sleep 300"
> [1225287547.231327] [064.1] [pid=2346] Making callbacks (type 9)...
> [1225287547.231336] [001.0] [pid=2346] my_system()
> [1225287547.231344] [256.1] [pid=2346] Running command '/bin/bash -c
> "sleep 300"'...
> [1225287547.231367] [064.1] [pid=2346] Making callbacks (type 10)...
> [1225287547.231967] [001.0] [pid=2451] process_macros()
> [1225287547.231997] [001.0] [pid=2451] process_macros()
> [1225287547.232013] [001.0] [pid=2451] process_macros()
> [1225287547.232028] [001.0] [pid=2451] process_macros()
> [1225287547.232042] [001.0] [pid=2451] process_macros()
> [1225287547.232056] [001.0] [pid=2451] process_macros()
> [1225287551.231246] [016.2] [pid=2448] Moving temp check result file
> '/tmp/nagios/var/spool/checkresults/check13kIOP' to queue file
> '/tmp/nagios/var/spool/checkresults/cn2NyLo'...
>
> *** 300sec gap ***
>
> [1225287847.239230] [256.1] [pid=2346] Execution time=30.001 sec
> , early timeout=0, result=2[1225287847.239309] [064.1] [pid=2346]
> Making callbacks (type 10)...
> [1225287847.239332] [064.1] [pid=2346] Making callbacks (type 11)...
> [1225287847.239341] [001.0] [pid=2346] check_for_external_commands()
> [1225287847.239350] [064.1] [pid=2346] Making callbacks (type 18)...
> [1225287847.239376] [016.1] [pid=2346] Rescheduling next check of
> service at Wed Oct 29 14:39:57 2008
> [1225287847.239386] [001.0] [pid=2346] get_next_valid_time()
> [1225287847.239394] [001.0] [pid=2346] check_time_against_period()
So Nagios does nothing during the execution of eventhandler. I gues the
reason is because the eventhandler is executed by the main nagios
process (look at the pid). During the 300seconds sleep, Nagios takes
100% cpu.
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