1. Puppet v4
Avoiding Dragons
Garrett Honeycutt
gh@learnpuppet.com
LearnPuppet.com
@learnpuppet

2. AIO

3. 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)

4. Bye Bye
Apache+Passenge
r

5. Hello
JVM+Closure+JRu
by

6. Ruby 1.8.7
RIP

7. OSX <= 10.6
(snow leopard)
RIP

8. Where is
everything?

9. Mostly under
/opt/puppetlabs

10. /opt/puppetlabs/bin
Add to $PATH

11. /opt/puppetlabs/puppet/bin
Private programs for Puppet
such as ruby and gem

12. configuration is in
/etc/puppetlabs/puppet

13. $ ls /etc/puppetlabs
code
mcollective
puppet
puppetserver

14. SSL where!?
/etc/puppetlabs/puppet/ssl

15. /etc/puppetlabs/code
Hiera configuration
Hiera data
Static modules
Environments

16. Environments
/etc/puppetlabs/code/environments

17. Many
type/provider
improvements

18. Facts are not
all strings

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

20. class foo (
$bar = true,
) {
if is_string($bar) == true {
$bar_real = str2bool($bar)
} else {
$bar_real = $bar
}
validate_bool($bar_real)
}

21. Templates with
EPP
epp(module/foo.epp)

22. Language

23. Iteration with
lambdas
.each is here

24. $list = ['a','b','c']
each($list) |$index, $value|
{
notice("${index} = ${value}")
}

25. Notice: Scope(Class[main]): 0 = a
Notice: Scope(Class[main]): 1 = b
Notice: Scope(Class[main]): 2 = c

26. ['a','b','c'].each |$index, $value|
{
notice("${index} = ${value}")
}

27. Notice: Scope(Class[main]): 0 = a
Notice: Scope(Class[main]): 1 = b
Notice: Scope(Class[main]): 2 = c

28. Lambdas
.each
.slice
.filter
.map
.reduce
.with

29. Type casting

30. class foo (
$bar = true,
) {
if is_string($bar) == true {
$bar_real = str2bool($bar)
} else {
$bar_real = $bar
}
validate_bool($bar_real)
}

31. 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)
}

32. String
Integer, Float, and Numeric
Boolean
Array
Hash
Regexp
Undef
Default

33. Scalar Struct
Collection Optional
Variant Catalogentry
Data Type
Pattern Any
Enum Callable
Tuple

34. Upgrading

35. Never upgrade
in place

36. Create new
puppet
masters

37. common nscd rsyslog
dnsclient nsswitch selinux
facter ntp ssh
hosts pam
sysklogd
inittab papertrail timezone
localization puppet types
nfs redhat utils
nrpe rpcbind vim

38. Travis-ci

39. # spec/spec_helper.rb
RSpec.configure do |config|
config.before :each do
Puppet[:parser] = 'future' if
ENV['PARSER'] == 'future'
end
end

40. # .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"

41. # .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 && bundle
exec rake validate && bundle exec rake lint && SPEC_OPTS="--
format documentation" bundle exec rake spec'
matrix:
fast_finish: true
notifications:
email: false

42. Resource
Overrides

43. Service ['nfs_service'] {
ensure => running,
enable => true,
hasstatus => true,
hasrestart => true,
}

44. Service['nfs_service'] {
ensure => running,
enable => true,
hasstatus => true,
hasrestart => true,
}

45. type()

46. Error: Illegal
expression. A
Reserved Word
'type' is
unacceptable as
function name

47. type3x()

48. stdlib

49. puppetlabs/stdlib >= 4.6.0 < 6.0.0
v4.6.0 includes type3x()

50. validate_absolute_path()
Now accepts arrays :)
Broke my spec tests :(

51. Error codes changed
slightly
Broke my spec tests :(

52. expected Puppet::Error with
message matching /^true is
not a string/, got
#<Puppet::Error: Evaluation
Error: Error while
evaluating a Function Call,
true is not a string. It
looks to be a TrueClass

53. Got rid of '^' in regex so it was not
being as explicit.

54. Templates

55. Must have @var instead of just var.
Check inline_template() too.

56. Stop using
inline_template()

57. Node
Inheritance
RIP

58. node common {
include ssh
}
node 'f.example.com' inherits common {
include apache
}

59. Upgrade Checklist
* setup Travis (or equiv)
* test
* test
* test

60. Puppet v4
Avoiding Dragons
Garrett Honeycutt
gh@learnpuppet.com
LearnPuppet.com
@learnpuppet