Cronjob to notify by mail Post: 302467882

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Top Forums Shell Programming and Scripting Cronjob to notify by mail Post 302467882 by Chubler_XL on Sunday 31st of October 2010 10:14:08 PM

10-31-2010

Moderator

Example cron config

Code:

# On the 1st of the month at 8am notify Task 2 jobs
0 8 1 * * /usr/local/bin/mynotify 2
 
# On the 1st and 15th of the month at 7:30am Task 1 jobs
30 7 1,15 * * /usr/local/bin/mynotify 1
 
# On Friday at 11:15pm notify Task 3 jobs
15 23 * 5 /usr/local/bin/mynotify 3
 
# On 1st Apr (1st Quarter) at 8am notify Task 4 jobs
0 8 1 4 * /usr/local/bin/mynotify 4

For quarterly checks you are probably best of creating 1 job for each of the 4 dates (see 1st April above).

Now you just need to write your "mynotify" script that accepts a task number and sends the emails out. It can read your config files.

Code:

$ cat tasks_list.txt
1:1,2,3:Check windows servers' health:Peter Bill
2:4,5:Check the mail server's health:James
3:6,7,8:Check linux server's health:Bill

$ cat name.txt
Bill bill@xxx.com
Peter peter@xxx.com
James james@xxx.com

$ cat mynotify 
TASK=$1
TODO=$(grep "^$TASK" tasks_list.txt)
[ -z "$TODO" ] && exit
JOBS=$(echo $TODO | cut -f2 -d:)
TITLE=$(echo $TODO | cut -f3 -d:)
WHO=$(echo $TODO | cut -f4 -d:)
echo $WHO | tr ' ' '\n' | while read USR
do
    EMAIL=$(grep "^$USR " name.txt | cut -f2 -d' ')
    echo mail to $USR \($EMAIL\)  subject $TITLE  jobs $JOBS  
done

$ ./mynotify 1
mail to Peter (peter@xxx.com) subject Check windows servers' health jobs 1,2,3
mail to Bill (bill@xxx.com) subject Check windows servers' health jobs 1,2,3

Last edited by Chubler_XL; 10-31-2010 at 11:32 PM..

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LEARN ABOUT OPENSOLARIS

queuedefs

queuedefs(4)							   File Formats 						      queuedefs(4)

NAME

       queuedefs - queue description file for at, batch, and cron

SYNOPSIS

       /etc/cron.d/queuedefs

DESCRIPTION

       The queuedefs file describes the characteristics of the queues managed by cron(1M). Each non-comment line in this file describes one queue.
       The format of the lines are as follows:

       q.[njobj][nicen][nwaitw]

       The fields in this line are:

       q	The name of the queue. a is the default queue for jobs started by at(1); b is the default queue for jobs  started  by  batch  (see
		at(1)); c is the default queue for jobs run from a crontab(1) file.

       njob	The  maximum  number of jobs that can be run simultaneously in that queue; if more than njob jobs are ready to run, only the first
		njob jobs will be run, and the others will be run as jobs that are currently running terminate.  The default value is  100.

       nice	The nice(1) value to give to all jobs in that queue that are not run with a user ID of super-user.  The default value is 2.

       nwait	The number of seconds to wait before rescheduling a job that was deferred because more than njob jobs were running in  that  job's
		queue, or because the system-wide limit of jobs executing has been reached.  The default value is 60.

       Lines beginning with # are comments, and are ignored.

EXAMPLES

       Example 1 A sample file.

	 #
	 #
	 a.4j1n
	 b.2j2n90w

       This  file  specifies that the a queue, for at jobs, can have up to 4 jobs running simultaneously; those jobs will be run with a nice value
       of 1.  As no nwait value was given, if a job cannot be run because too many other jobs are running cron will wait 60 seconds before  trying
       again to run it.

       The  b  queue, for batch(1) jobs, can have up to 2 jobs running simultaneously; those jobs will be run with a nice(1) value of 2.  If a job
       cannot be run because too many other jobs are running, cron(1M) will wait 90 seconds before trying again to run it. All	other  queues  can
       have up to 100 jobs running simultaneously; they will be run with a nice value of 2, and if a job cannot be run because too many other jobs
       are running cron will wait 60 seconds before trying again to run it.

FILES

       /etc/cron.d/queuedefs	queue description file for  at, batch, and  cron.

SEE ALSO

       at(1), crontab(1), nice(1), cron(1M)

SunOS 5.11							    1 Mar 1994							      queuedefs(4)