/[monit]/monit/web/FAQ.txt
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revision 1.1 by hauk, Sat Dec 18 23:23:09 2004 UTC revision 1.2 by martinp, Mon Jan 10 21:14:22 2005 UTC
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1    Short FAQ:
2    ----------
3    
4       @version \$Id$
5    
6    
7  1. Q: Monit watches processes by a pid file, so if a program crashes  1. Q: Monit watches processes by a pid file, so if a program crashes
8        without removing its pid file, then monit won't recognize it,        without removing its pid file, then monit won't recognize it,
9        right?        right?
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32        data from the port (via the select system call or test for an        data from the port (via the select system call or test for an
33        ICMP error in case of udp). If the connection fails or if the        ICMP error in case of udp). If the connection fails or if the
34        port connection does not respond, monit will restart the        port connection does not respond, monit will restart the
35        program. As of monit version 4.1 you can also write your own        program. As of monit version 4.1 you can also can write your own
36        protocol-tests using send and expect strings (see the manual).        protocol-tests using send and expect strings (see the manual).
37        Although this requires the server to use a text based protocol.        Although this requires the server to use a text based protocol.
38    
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344         [A] http://www.fefe.de/dietlibc/         [A] http://www.fefe.de/dietlibc/
345         [B] http://www.uclibc.org/         [B] http://www.uclibc.org/
346    
347    
348    12. Q: When running in debug mode (using -v option) there are following error
349           messages (example):
350           --8<--
351           system statistic error -- orphaned process id 5812
352           system statistic error -- orphaned process id 5819
353           ...
354           system statistic error -- orphaned process id 5854
355           system statistic error -- cannot find process id 1
356           --8<--
357    
358        A: You are most probably running monit on system with security restrictions
359           which hides process with PID 1. For example LIDS and Linux-VServer
360           are optionaly able to do so. Monit can run and work in this environment,
361           but some system or process resource statistics may be not available
362           (will show zero as value). You can also unhide PID 1 for monit's context
363           and use for example unkillable protection for PID 1 instead to provide
364           access to monit to these statistics.
365    
366  -------------------------------------------------------------------------------  -------------------------------------------------------------------------------
367    
368  HOW-TO debug monit:  HOW-TO debug monit:

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