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Introduction
Cookstyle is a code linting tool that aids in the improvement of your Chef Infra cookbooks. It improves by identifying and automatically fixing any errors in style, grammar, and logic. Cookstyle is tailored for Chef Cookbook code and is more reliable than Rubocop. As a result, linting Cookbooks using Cookstyle will be more reliable and less likely to result in failed CI tests. In this article, we will be learning about AptRepositoryDistributionDefault, AptRepositoryNotifiesAptUpdate. We will also discuss Attribute metadata and ConflictsMetadata.
CookStyle
Cookstyle uses the RuboCop linting engine as its power source. In order to enforce a standard code style and catch frequent Ruby coding errors, RuboCop comes with over 300 rules or cops. With a portion of those cops specifically designed for cookbook development. We've tailored Cookstyle. Additionally, we ship Chef-specific cops that identify typical cookbook coding errors, tidy up unused code. It also find deprecations that prohibit cookbooks from working with the most recent versions of Chef Infra Client.
AptRepositoryDistributionDefault
The department is: AptRepositoryDistributionDefault
Chef/RedundantCode/AptRepositoryDistributionDefault is full name of cop.
Distribution node['lsb']['codename'] does not need to be supplied to an apt repository resource. Because it is handled automatically by the apt repository resource.
Examples
Incorrect
apt_repository 'my repo' do
uri 'http://packages.example.com/debian'
components %w(stable main)
deb_src false
distribution node['lsb']['codename']
end
Correct
apt_repository 'my repo' do
uri 'http://packages.example.com/debian'
components %w(stable main)
deb_src false
end
Configurable attributes
AptRepositoryNotifiesAptUpdate
The department is: AptRepositoryNotifiesAptUpdate
Chef/RedundantCode/AptRepositoryNotifiesAptUpdate is full name of the cop.
Since the apt repository resource creates apt repositories automatically. There is no need to notify apt-get updates when they are produced.
Example
Incorrect
apt_repository 'my repo' do
uri 'http://packages.example.com/debian'
components %w(stable main)
deb_src false
notifies :run, 'execute[apt-get update]', :immediately
end
Correct
apt_repository 'my repo' do
uri 'http://packages.example.com/debian'
components %w(stable main)
deb_src false
end
Configurable attributes
AttributeMetadata
The department is: AttributeMetadata
Chef/RedundantCode/AttributeMetadata is the full name of the cop.
In cookbooks, the attribute metadata.rb method is not required and is not used.
Chef/RedundantCode/ConflictsMetadata is the full name of the cop.
Example
Incorrect
conflicts "another_cookbook"
Configurable attributes
Frequently Asked Questions
Explain the major components of Chef.
The major components of the chef are the chef server, chef node, and chef workstation.
What exactly is a Chef Node, and why is it significant?
The node, a component of the Chef design, can be viewed as a physical server or a virtual machine. With Chef, any resource may be used.
What distinguishes a recipe in Chef from a cookbook?
A Recipe is created when resources are combined, and this is helpful for carrying out settings and policy. Combining Recipes creates a Cookbook, which is much easier to maintain than a single Recipe.
Why are SSL certificates used in Chef?
The Chef's initial configuration, as well as the creation of the certificate and private keys in Nginx, require the SSL certificate. This makes sure that between the Chef Client and Chef Server, the appropriate data can be obtained.
Conclusion
In this article, we have extensively discussed CookStyle Cops - Chef/RedundantCode Section.
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