So today I had a fun problem: How am I to correct the leap second bug on 700 systems? Gosh, that’s a thing. So I went looking in my systems administrator toolbox and found Fabric. Turns out that you can automate things in pretty awesome ways with it.
Fabric is a python tool that lets you specify a runlist of things to do, and go execute them across a pile of hosts. For me, this meant:$ cat fabfile.py
$ from fabric.api import run, env def fix_date(): run('date; date `date +"%m%d%H%M%C%y.%S"`; date') $ fab --skip-bad-hosts -t 3 -H \ `perl -e 'chomp(@l=<>); print join ",", @l;' < hosts.txt `\ fix_date
And bam, 30 minutes later, the bug is done.