Jan Gehring > Rex > Rex::Commands::Cron

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Module Version: 0.57.0   Source  

NAME ^

Rex::Commands::Cron - Simple Cron Management

DESCRIPTION ^

With this Module you can manage your cronjobs.

SYNOPSIS ^

 use Rex::Commands::Cron;
 
 cron add => "root", {
        minute => '5',
        hour  => '*',
        day_of_month   => '*',
        month => '*',
        day_of_week => '*',
        command => '/path/to/your/cronjob',
      };
 
 cron list => "root";
 
 cron delete => "root", 3;

EXPORTED FUNCTIONS ^

cron_entry($name, %option)

Manage cron entries.

 cron_entry "reload-httpd",
   ensure       => "present",
   command      => "/etc/init.d/httpd restart",
   minute       => "1,5",
   hour         => "11,23",
   month        => "1,5",
   day_of_week  => "1,3",
   day_of_month => "1,3,5",
   user         => "root",
   on_change    => sub { say "cron added"; };
 
 # remove an entry
 cron_entry "reload-httpd",
   ensure       => "absent",
   command      => "/etc/init.d/httpd restart",
   minute       => "1,5",
   hour         => "11,23",
   month        => "1,5",
   day_of_week  => "1,3",
   day_of_month => "1,3,5",
   user         => "root",
   on_change    => sub { say "cron removed."; };
cron($action => $user, ...)

With this function you can manage cronjobs.

List cronjobs.

 use Rex::Commands::Cron;
 use Data::Dumper;
 
 task "listcron", "server1", sub {
   my @crons = cron list => "root";
   print Dumper(\@crons);
 };

Add a cronjob.

This example will add a cronjob running on minute 1, 5, 19 and 40. Every hour and every day.

 use Rex::Commands::Cron;
 use Data::Dumper;
 
 task "addcron", "server1", sub {
    cron add => "root", {
      minute => "1,5,19,40",
      command => '/path/to/your/cronjob',
    };
 };

This example will add a cronjob running on the 1st, 3rd and 5th day of January and May, but only when it's a Monday or Wednesday. On those days, the job will run when the hour is 11 or 23, and the minute is 1 or 5 (in other words at 11:01, 11:05, 23:01 and 23:05).

 task "addcron", "server1", sub {
    cron add => "root", {
      minute => "1,5",
      hour  => "11,23",
      month  => "1,5",
      day_of_week => "1,3",
      day_of_month => "1,3,5",
      command => '/path/to/your/cronjob',
    };
 };

Delete a cronjob.

This example will delete the 4th cronjob. Counting starts with zero (0).

 task "delcron", "server1", sub {
    cron delete => "root", 3;
 };

Managing Environment Variables inside cron.

 task "mycron", "server1", sub {
    cron env => user => add => {
      MYVAR => "foo",
    };
 
    cron env => user => delete => $index;
    cron env => user => delete => 1;
 
    cron env => user => "list";
 };
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