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enhance code examples for Components #11

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alvagante merged 1 commit into from
May 30, 2016
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enhance code examples for Components #11

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16 changes: 10 additions & 6 deletions _posts/2016-05-30-exploring-puppet4-modules-design-patterns.md
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ Example:
class ntp::client::local_broadcast(String $keygroup_name = $facts['domain'], String $interface = 'ALL') {
include ::ntp
ntp::conf {
source_template => 'ntp/client/local_broadcast.cfg.erb',
config_content => template('ntp/client/local_broadcast.cfg.erb'),
}
}

Expand All @@ -60,12 +60,16 @@ Being a **foundation** requires to be broad, stable, well-tested. Being a shared

Example:

# install and configure NTPd
# install NTPd
class ntp(
Enum[present, absent] $ensure = 'present',
String $config_source = undef,
String $config_content = undef,
) { [...]}
Enum[present, absent] $ensure = 'present',
) { [...] }

# deploy configuration file for NTPd
ntp::conf(
String $config_source = undef,
String $config_content = undef,
) { [...] }

Beyond that, a component should expose information about the capabilities and features of the installed software. A example is which of the many mysql versions is installed, as this has consequences in details of configuration. Doing this allows all the platform- and version-specific niggles to be concentrated in one location. Whenever a profile needs to make a decision on one of those values, confident in their fidelity, without having to fall back to guessing from operating system versions, or similar.

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