Given the same script on multiple servers, Shelock ensures only one will run at a given time. Particularly useful with cronjobs.
$ sherlock /usr/bin/python ~/myscript.py arg1 arg2
will run the script /usr/bin/python ~/myscript.py arg1 arg2 and exit with the
same exit status as the script.
If other machine tries to execute the same line above it will wait until the first one finishes.
It's possible to prevent other machines to run whatsoever with -once
parameter.
If N machines run the following line at the same time:
$ sherlock -once python myscript.py arg1 arg2
Only one machine will succeed. Others will not run the script. Note that this only prevents others from running while one of them is running.
See all available options with -help.
Copyright (c) 2013 Igor Sobreira igor@igorsobreira.com
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As you can see on bin/ directory there is a binary for linux/amd64.
Since I work on a Mac I need to cross compile sherlock to linux/amd64 to be able to run on CentOS on our servers.
First you need to have Go installed from source. Then run:
$ ./manager release
this will download the scripts for cross compilation, cross compile Go for linux/amd64 then cross compile sherlock for linux/amd64.
For more details on cross compilation in Go see this article.