In the DesertWithout a Camel

A devops journey, with very little Perl

Steve Scaffidistephen@scaffidi.netirc nick: hercynium

YAPC::NAJune 8, 2015

Salt Lake City, Utah

The person who approved this talk has

been sacked.

"It's not got much Perl in it!"

☺

"Senior Software Engineer"Data Warehouse Team

at TripAdvisor

My job title...

What people think I do:

What I actually spend most of my time doing:

The Best Tool for the Job

The Best Tool for the Job

Not Always

The Best Tool for the Job

Not Always

...but sometimes it is.

Get on with it!

Y U NO PERL?

redhat/centos

Solutions?

perlbrew

http://perlbrew.pl

curl -L http://install.perlbrew.pl | bash

source ~/perl5/perlbrew/etc/bashrc

perlbrew install perl-5.22.0

perlbrew use perl-5.22.0

Insanely Simple:

perlbrew install-cpanm

For your convenience:

perlbrew install perl-5.12.5perlbrew use perl-5.12.5

Go ahead, have another!

perlbrew use 5.22cpan Moose # wait a little bit

perlbrew use 5.12.5cpan Moose # wait a bit longer

cpan Dist::Zilla # go out for lunch

Share with others:

export PERLBREW_ROOT=/opt/perlbrewexport PERLBREW_HOME=/tmp/.perlbrew

# put perlbrew perls under /opt to# share with multiple userscurl -L http://install.perlbrew.pl | bash

cpanm

fu-redhat

curl -L https://cpanmin.us | perl - App::cpanminus

WARNINGlocal::lib + perlbrew = pain

cpanminus++

carton

# On your development environment> cat cpanfilerequires 'Plack', '0.9980';requires 'Starman', '0.2000';

> carton install> git add cpanfile cpanfile.snapshot> git commit -m "add Plack and Starman"

# Other developer's machine,# or on a deployment box> carton install> carton exec starman -p 8080 myapp.psgi

(blatantly copied from carton's perldoc)

Chicken & Egg?

cpanm to the rescue!

miyagawa++x 1,000,000

"Please sir, I want some more"

fatpack

# "myscript" is using cpan deps that need to# be installed by the user first...

fatpack pack myscript.pl > myscript.packed.pl

# "myscript.packed" can just be run by anybody

chmod +x myscript.packed.pl./myscript.packed.pl

use the cpan to develop, but don't

make your users have to

Caveat: Pure-perl code *only*

mst++

PAR

Caveat: complex, but very powerful.

But can pack XS modules and even perl itself into a single-file

executable!!!!!!

audreyt++

Generating OS Packages

opt-perl.spechttps://gist.github.com/hercynium/7865220

what about modules?

fpm

https://github.com/jordansissel/fpm/wiki

https://github.com/jordansissel/fpm/wiki/Perl-Packaging-With-FPM

fpm -t rpm -s cpan \ --cpan-perl-lib-path \ /opt/perl-5.16.1/site_perl/5.16.1 \ Some::Module

Works with lots of languages!

Segue

NoPerl

Bow to the JVM

Snakes and Jewels

But... Systems Administration!

Y U NO PERL?

No Habla Perl

"DevOps"

"DevOps"

Systems Administration

unless ( Ops::Engineer->can("write_code") ) {

warn "Keep your filthy hands off my servers";

}

OutOfMemoryError

Thank You!