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Full Discussion: Script Cron issue
Top Forums Shell Programming and Scripting Script Cron issue Post 302426167 by Segwar on Tuesday 1st of June 2010 03:17:51 AM
Old 06-01-2010
Script Cron issue
Hi All.

I have scheduled the script below in cron (Solaris 8). This script is supported to monitor the output of the websphere was-stat command and send a page out if it finds that one of the JVMs in the JVM_list.txt is down.
Code:
#!/bin/ksh
mailbox=pager_name
cat JVM_list.txt | while read i
do
was-stat | grep $i > /dev/null 2>&1
if [ $? -ne "0" ]; then
mailx -s "The JVM $i is down on server `hostname`" $mailbox
##echo "The JVM $i is down on server `hostname`"
else
echo " The JVM $i is up on the server `hostname`"
fi
done

The Cron entry is as follows
Code:
05 * * * 1-5 /path/to/script/jvmscript/server_name_jvm_monitor.sh > /dev/null 2>&1

The issue is that if I run the script interactively, it works.
but crontab does not seem to be initiating the script as I tried bringning a JVM down and I did not recieve a page.
The script is supposed to run every 5 mins on weekdays.
Can someone look at it and the script and help me debug.

Thanks
Segwar
 

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LEARN ABOUT SUNOS

asadmin-create-jvm-options

asadmin-create-jvm-options(1AS) 				   User Commands				   asadmin-create-jvm-options(1AS)

NAME

       asadmin-create-jvm-options, create-jvm-options - creates the JVM options from the Java configuration or profiler elements

SYNOPSIS

       create-jvm-options  --user  admin_user  [--password admin_password][--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename]
       [--terse=false]			      [--echo=false]			    [--interactive=true]			 [--profiler=false
       ](jvm_option_name=jvm_option_value)[:jvm_option_name=jvm_option_value]*

       Creates the JVM options in the Java configuration or Profiler elements of the domain.xml file. You can enter more than one JVM option sepa-
       rated by a colon (:) . If the JVM option starts with a dash (-) then use two dashes (--) before the operand to distinguish that JVM  option
       is an operand and not an option. JVM options are used to record the settings needed to get a particular profiler going.

       You must restart the server for the newly created JVM options to take affect. Use the start-domain command to restart the server domain.

OPTIONS

       --user		       authorized domain application server administrative username.

       --password	       password to administer the domain application server.

       --host		       machine name where the domain application server is running.

       --port		       port number of the domain application server listening for administration requests.

       --secure 	       if true, uses SSL/TLS to communicate with the domain application server.

       --passwordfile	       file containing the domain application server password.

       --terse		       indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well-
			       formatted data for consumption by a script. Default is false.

       --echo		       setting to true will echo the command line statement on the standard output. Default is false.

       --interactive	       if set to true (default), only the required password options are prompted.

       --profiler	       indicates if the JVM options is for the profiler. Profiler must exist for this option to be true.

OPERANDS

       jvm_option_name=jvm_optithevleft side of the equal sign (=) is the JVM  option  name.  The  right  side	of  the  equal	sign  (=)  is  the
			       jvm_option_value.  Additionally,  you  can  use ":" as a delimiter for more than one jvm-option.  If the jvm-option
			       contains a ":", use the escape character  to offset the ":" delimiter.

       Example 1: Using create-jvm-options

       asadmin> create-jvm-options --user admin --password adminadmin
       --host localhost --port 4848 --profiler=false --DDebug=true:"-Xmx256m":"
       -Dcom.sun.aas.imqBin"="/export/as7se/imq/bin"
       Command create-jvm-options executed successfully

       Where the JVM options are created. The double dash (--) is used between --profiler options and the operand because - indicated the  end	of
       the options and the following text is the operand. The double dash (--) is necessary here since there are single dashes (i.e., --DDebug) in
       the operand. To distinguish between the options and the operand, the double dash (--) is used.

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-delete-jvm-options(1AS)

J2EE 1.4 SDK							    March 2004					   asadmin-create-jvm-options(1AS)
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