[sf-perl] parallelize system tasks, collecting statuses and output
Randal L. Schwartz
merlyn at stonehenge.com
Sat Mar 15 08:16:08 PDT 2008
>>>>> "David" == David Alban <extasia at extasia.org> writes:
David> our sysadmins regularly need to restart a service on, say thirty
David> machines. the service takes two and a half minutes to restart. i'd
David> like to write a perl program they can use to parallelize the restart.
David> so that the whole operation takes three minutes rather than an hour or
David> more. i want to collect the statuses and any output of the service
David> restart commands.
David> i found the Bidirectional Communication with Yourself section of the
David> perlipc man page. i'm trying to hack their example so that only the
David> child writer writes to the parent reader. my hacked version forks two
David> child processes, which i want to run in parallel. each child process
David> ssh's to a host, sleeps a small amount of time, and then runs the
David> hostname command. but the child procs seem to be running serially.
"Getting your kids to do the work"
Or, just look at Parallel::ForkManager in the CPAN.
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn at stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
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