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Full Discussion: How to detect and fix why crontab job is not executed?
Top Forums Shell Programming and Scripting How to detect and fix why crontab job is not executed? Post 303031841 by Ophiuchus on Wednesday 6th of March 2019 11:55:12 AM
Old 03-06-2019
Quote:
Originally Posted by Don Cragun
I know it is unlikely, but has anyone checked whether or not the server is running at 6am on the day(s) when the cron job doesn't run? If there is some kind of daily maintenance operation that takes the server out of normal multi-user mode during that timeframe, cron jobs that were missed while not in multi-user mode will not be started if the system comes back up to normal multi-user mode after the job's scheduled start time.
Hi Don,

Thanks for your answer.

For now with the help of bukuni and RudiC I've set the cron in this way

Code:
  # crontab -l
0 6 * * * /path/to/scripts/script1.sh > /root/CronLog/cronlog.log 2> /root/CronLog/cronlog.err

The issue is that the cron job has failed every day of the week.

Do you know how to check if the source server was running a maintenance operation or something else when the cron job failed?

The source server model/version is

SunOS Generic_118833-22 sun4u sparc SUNW,Sun-Fire-V245

Thanks
 

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LEARN ABOUT OSF1

cron

cron(8) 						      System Manager's Manual							   cron(8)

NAME

       cron - The system clock daemon

SYNOPSIS

       /usr/sbin/cron

DESCRIPTION

       The cron daemon runs shell commands at specified dates and times.  Commands that are to run according to a regular or periodic schedule are
       found within the crontab files.	Commands that are to run once only are found within the at files.  You submit crontab and at file  entries
       by  using  the  crontab	and  at  commands.  Because the cron process exits only when killed or when the system stops, only one cron daemon
       should exist on the system at any given time.  Normally, you start the cron daemon from within a run command file.

       During process initialization and when cron detects a change, it examines the crontab and at files.  This strategy reduces the overhead	of
       checking  for  new  or  changed files at regularly scheduled intervals.	The cron command creates a log of its activities.  The cron daemon
       must be started from the system startup scripts because it must begin execution without a login user ID set.  The cron daemon  starts  each
       job  with the following process attributes stored with the job by the invoking process: Login user ID Effective and real user IDs Effective
       and real group IDs Supplementary groups

       It also establishes the following attributes from the authentication profile of the account associated with the login user ID of the invok-
       ing process: Audit control and disposition masks Kernel authorizations

DIAGNOSTICS

       The at and batch programs will refuse to accept jobs submitted from processes whose login user ID is different from the real user ID.

FILES

       Specifies the command path.  Main cron directory Directory containing the crontab files.  List of allowed users.  List of denied users His-
       tory information for cron Queue description file for at, batch, and cron

RELATED INFORMATION

       Commands:  at(1), crontab(1), rc0(8), rc2(8), rc3(8)

       Files: queuedefs(4) delim off

																	   cron(8)
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