Puppet v4Avoiding Dragons

Garrett Honeycutt

gh@learnpuppet.com

LearnPuppet.com

@learnpuppet

AIO

puppet-agent package from PC1

augeas (1.3.0) ruby (2.1.6)

cfacter (0.4.1) ruby-augeas (0.5.0)

facter (2.4.4) ruby-selinux(2.0.94)

hiera (2.0.1) ruby-shadow (2.3.3)

marionette-collective (2.8.2) ruby-stomp (1.3.3)

openssl (1.0.0r) rubygem-deep-merge(1.0.0)

puppet (4.1.0) rubygem-net-ssh (2.1.4)

virt-what (1.1.4)

Bye ByeApache+Passenge

r

HelloJVM+Closure+JRu

by

Ruby 1.8.7

RIP

OSX <= 10.6(snow leopard)

RIP

Where iseverything?

Mostly under/opt/puppetlabs

/opt/puppetlabs/bin

Add to $PATH

/opt/puppetlabs/puppet/bin

Private programs for Puppetsuch as ruby and gem

configuration is in /etc/puppetlabs/puppet

$ ls /etc/puppetlabs

code

mcollective

puppet

puppetserver

SSL where!?

/etc/puppetlabs/puppet/ssl

/etc/puppetlabs/code

Hiera configuration Hiera data Static modules Environments

Environments

/etc/puppetlabs/code/environments

Manytype/providerimprovements

Facts are notall strings

$ facter os --yaml---os: name: CentOS family: RedHat release: major: '7' minor: '1' full: 7.1.1503

class foo (

$bar = true,

) {

if is_string($bar) == true {

$bar_real = str2bool($bar)

} else {

$bar_real = $bar

}

validate_bool($bar_real)

}

Templates withEPP

epp(module/foo.epp)

Language

Iteration withlambdas

.each is here

$list = ['a','b','c']

each($list) |$index, $value|

{

notice("${index} = ${value}")

}

Notice: Scope(Class[main]): 0 = a

Notice: Scope(Class[main]): 1 = b

Notice: Scope(Class[main]): 2 = c

['a','b','c'].each |$index, $value|

{

notice("${index} = ${value}")

}

Notice: Scope(Class[main]): 0 = a

Notice: Scope(Class[main]): 1 = b

Notice: Scope(Class[main]): 2 = c

Lambdas.each

.slice

.filter

.map

.reduce

.with

Type casting

class foo (

$bar = true,

) {

if is_string($bar) == true {

$bar_real = str2bool($bar)

} else {

$bar_real = $bar

}

validate_bool($bar_real)

}

class foo (

Boolean $bar = true,

) {

# Remove all this code!

#

# if is_string($bar) == true {

# $bar_real = str2bool($bar)

# } else {

# $bar_real = $bar

# }

# validate_bool($bar_real)

}

String

Integer, Float, and Numeric

Boolean

Array

Hash

Regexp

Undef

Default

Scalar Struct

Collection Optional

Variant Catalogentry

Data Type

Pattern Any

Enum Callable

Tuple

Upgrading

Never upgradein place

Create newpuppetmasters

common nscd rsyslog

dnsclient nsswitch selinux

facter ntp ssh

hosts pamsysklogd

inittab papertrail timezone

localization puppet types

nfs redhat utils

nrpe rpcbind vim

Travis-ci

# spec/spec_helper.rb

RSpec.configure do |config|

config.before :each do

Puppet[:parser] = 'future' if ENV['PARSER'] == 'future'

end

end

# .travis.yml

env:

matrix:

- PUPPET_GEM_VERSION="~> 3.1"

- PUPPET_GEM_VERSION="~> 3.2"

- PUPPET_GEM_VERSION="~> 3.3"

- PUPPET_GEM_VERSION="~> 3.4"

- PUPPET_GEM_VERSION="~> 3.5"

- PUPPET_GEM_VERSION="~> 3.6"

- PUPPET_GEM_VERSION="~> 3.7"

- PUPPET_GEM_VERSION="~> 3.8"

- PUPPET_GEM_VERSION="~> 3" PARSER="future"

- PUPPET_GEM_VERSION="~> 4.0"

- PUPPET_GEM_VERSION="~> 4.1"

- PUPPET_GEM_VERSION="~> 4"

# .travis.yml

---

language: ruby

rvm:

- 2.1.0

sudo: false

env:

matrix:

- PUPPET_GEM_VERSION="~> 3" PARSER="future"

- PUPPET_GEM_VERSION="~> 4"

script: 'bundle exec metadata-json-lint metadata.json && bundleexec rake validate && bundle exec rake lint && SPEC_OPTS="--format documentation" bundle exec rake spec'

matrix:

fast_finish: true

notifications:

email: false

ResourceOverrides

Service ['nfs_service'] {

ensure => running,

enable => true,

hasstatus => true,

hasrestart => true,

}

Service['nfs_service'] {

ensure => running,

enable => true,

hasstatus => true,

hasrestart => true,

}

type()

Error: Illegalexpression. AReserved Word'type' isunacceptable asfunction name

type3x()

stdlib

puppetlabs/stdlib >= 4.6.0 < 6.0.0

v4.6.0 includes type3x()

validate_absolute_path()

Now accepts arrays :)

Broke my spec tests :(

Error codes changedslightly

Broke my spec tests :(

expected Puppet::Error withmessage matching /^true isnot a string/, got

#<Puppet::Error: EvaluationError: Error whileevaluating a Function Call,true is not a string. Itlooks to be a TrueClass

Got rid of '^' in regex so it was notbeing as explicit.

Templates

Must have @var instead of just var.

Check inline_template() too.

Stop using inline_template()

NodeInheritance

RIP

node common {

include ssh

}

node 'f.example.com' inherits common {

include apache

}

Upgrade Checklist

* setup Travis (or equiv)* test* test* test

Puppet v4Avoiding Dragons

Garrett Honeycutt

gh@learnpuppet.com

LearnPuppet.com

@learnpuppet