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zap (32) Versions 0.7.0

Provides HWRPs for creating authoritative resources

Policyfile
Berkshelf
Knife
cookbook 'zap', '= 0.7.0', :supermarket
cookbook 'zap', '= 0.7.0'
knife supermarket install zap
knife supermarket download zap
README
Dependencies
Changelog
Quality -%

zap

Library cookbook for garbage collecting chef controlled resource sets.

One of the common pitfalls in chef land is the pattern of one deleting a
resource definition from a recipe and the user wondering why the resource still
exists on the system.

For example, on Monday a cronjob is added:

cron 'collect stats' do
  action    :create
  minute    0
  command '/usr/local/bin/collect-stats | mailto ops@nvwls.com'
end

After a few days, the issue is figured out and that cron resource is removed
from the recipe. After uploading the new cookbook, they wonder why they are
still receiving email.

The issue that chef is great for describing actions. I mean, action is part
of the DSL.

At the 2013 Opscode Communit Summit, Matt Ray and I had a discussion regarding
this issue. The name authoritative cookbook was coined. If chef is deploying
files to a .d directory, if there are files in that directory not converged by a
resource, those files should be removed.

This pattern has been added to https://github.com/Youscribe/sysctl-cookbook

I presented the zap pattern at ChefConf 2014. You can check out the
video
http://www.youtube.com/watch?v=4-So4AJlBI4&list=PL11cZfNdwNyMmx0msapJfuGsLV43C7XsA&feature=share&index=53
and the slides
https://speakerdeck.com/nvwls/building-authoritative-resource-sets

Thanks

Users and groups support was provided by Sander Botman sbotman@schubergphilis.com.
Yum_repository support was provided by Sander van Harmelen svanharmelen@schubergphilis.com
Apt_repository support was provided by Helgi Þormar Þorbjörnsson helgi@php.net

Resource/Provider

zap_directory

Actions

  • :delete - Delete files in a directory

Attribute Parameters

  • pattern - Pattern of files to match, i.e. *.conf, defaults to *

Examples

zap_directory '/etc/sysctl.d' do
  pattern '*.conf'
end

zap_crontab

Actions

  • :delete - Delete jobs from a user's crontab

Attribute Parameters

  • pattern - Pattern of job names match, i.e. test \#*, defaults to *

Examples

zap_crontab 'root' do
  pattern 'test \#*'
end

zap_users

Delete users from /etc/passwd style files.
node['zap']['users']['keep'] contains an array of user names to
keep, i.e. root.

Actions

  • :remove

Example

zap_users '/etc/passwd' do
  # only zap users whose uid is greater than 500
  filter { |u| u.uid > 500 }
end

zap_groups

Delete groups from /etc/group style files.
node['zap']['groups']['keep'] contains an array of group names to
keep, i.e. wheel.

Actions

  • :remove

Example

zap_groups '/etc/group' do
  filter { |g| g.gid > 500 && g.name != 'nrpe' }
end

zap_yum_repos

If you manage your yum repos using the yum_repository LWRP from the yum cookbook,
you can use this provider to dynamically delete any unmanaged or obsolete repos.

Actions

  • :delete - Delete yum repos using the yum_repository LWRP from the yum cookbook

Attribute Parameters

  • pattern - Pattern of repository names to match, i.e. epel or update, defaults to *
  • immediately - Set to true if you want this action to be executed immediately, defaults to true

Example

zap_yum_repos '/etc/yum.repos.d' do
  pattern 'epel'
  immediately false
end

zap_apt_repos

If you manage your apt repos using the apt_repository LWRP from the apt cookbook,
you can use this provider to dynamically delete any unmanaged or obsolete repos.

Actions

  • :remove - Delete apt repos using the apt_repository LWRP from the apt cookbook

Attribute Parameters

  • pattern - Pattern of repository names to match, i.e. ppa or update, defaults to *
  • immediately - Set to true if you want this action to be executed immediately, defaults to true

Example

zap_apt_repos '/etc/apt/sources.list.d' do
  pattern 'ppa'
  immediately false
  action :remove
end

zap

This the base HWRP.

Example

zap '/etc/sysctl.d' do
  klass [Chef::Resource::File, 'Chef::Resource::Template']
  collect { ::Dir.glob("#{base}/*") }
end

zap Cookbook CHANGELOG

This file is used to list changes made in each version of the zap cookbook.

v0.5.2

Improvement

  • Refactored recipe[zap::yum_repos_d] into the zap_yum_repos resource provider
  • Added an option to call zap immediately at a certain point in your Chef run

v0.5.1

Improvement

  • Added recipe[zap::yum_repos_d]

v0.5.0

Improvement

  • Added collect and select to the resource

v0.4.3

Improvement

  • Moved @filter.call back

v0.4.2

Improvement

  • Moved @filter.call into iterate

v0.4.1

Improvement

  • Fixed rubocop warning

v0.4.0

Improvement

  • Added klass keyword to DSL which can take a class, i.e. Chef::Resource::File, or string, i.e. 'Chef::Resource::YumRepository', or an array of classes or strings.

v0.3.0

Improvement

  • Added zap_users and zap_groups

v0.2.0

Improvement

  • Added filter for more complex, codified filtering

v0.1.1

Improvement

  • Log at info

v0.1.0

Minor

  • Refactored into an HWRP to allow better code reuse

v0.0.6

Improvement

  • Cleaned up Rubocop warnings

v0.0.5

Improvement

  • Added zap_crontab to zap the specified user's crontab

v0.0.4

Improvement

  • Use ::File.join instead of hardcoding slashes

v0.0.3

Improvement

  • Split zap_directory into two phases, :delay to move it to the end of the resource list, and :run to do the actual work.

v0.0.2

Improvement

  • Move zap_directory to the end of the resource list.

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