Actions
The windows_power_management resource contains the following set of actions:
:set
This set the power scheme on a node to ‘balanced’ or ‘ultimate’.
:nothing
This resource block does not act until notified to do so by another resource. When this resource block is notified, it either runs immediately or is delayed to execute at the end of a Chef Infra Client run.
Properties
The windows_power_management resource has the following properties:
power_level
Ruby Type: String | Default Value: balanced
Power is divided into two categories: balanced and ultimate.
disk_timeout
Ruby Type: Integer
The number of minutes to wait before turning off the HD.
monitor_timeout
Ruby Type: Integer
The number of minutes to wait before shutting off the display.
hibernate_timeout
Ruby Type: Integer
The number of minutes to wait before hibernating the system.
standby_timeout
Ruby Type: Integer
The number of minutes to wait before putting the system into standby mode.
power_scheme_label
Ruby Type: String
A label name is used to preface your power scheme. To keep it separate, the code mimics the existing power scheme.
Common Resource Functionality
Chef resources contain common attributes, notifications, and resource guardians.
Common Properties
There are the following common properties to every resource:
sensitive
Ruby Type: true, false | Default Value: false
This ensures that sensitive resource data is not logged by Chef Infra Client.
retries
Ruby Type: Integer | Default Value: 0
The number of times an exception is caught and the resource is retried.
ignore_failure
Ruby Type: false, true, :quiet | Default Value: false
If a resource fails for any reason, continue running the recipe. :quiet This will not display the full stack trace, and the recipe will continue to run if a resource fails.
compile_time
Ruby Type: true, false | Default Value: false
Control the phase of the resource's execution on the node. Set to true to allow the resource collection to operate while it is being constructed. Set to false to prevent the Chef Infra Client from running while the node is being configured (the converge phase).
retry_delay
Ruby Type: Integer | Default Value: 2
The delay in seconds between retry attempts.
Notifications
notifies
Ruby Type: Symbol, 'Chef::Resource[String]'
When a resource's state changes, it can alert another resource to take action. Specify a'resource[name],' the :action that resource should take, and then the :timer for that action. A resource may inform more than one resource; use a notifying statement for each resource to be notified.
A timer specifies when a notice is sent during a Chef Infra Client execution. There are the following timers available:
:before
It specifies that the action on a notified resource should be executed before the resource block in which the notification is located is processed.
:delayed
Default. This property specifies that a notification should be queued and then executed at the end of a Chef Infra Client run.
:immediate, :immediately
It specifies that a notification should be run immediately, for each resource notified.
The syntax for notifies is:
notifies :action, 'resource[name]', :timer
Guards
During the execution stage of a Chef Infra Client run, the state of a node can be checked using the guard property in the windows power management resource. According to the outcomes of this review, a guard property is utilized to instruct Chef Infra Client whether or not to continue executing a resource. A guard property accepts either a string or a Ruby block value.
A guard property is important for guaranteeing that a resource is idempotent by allowing that resource to test for the intended state as it is being performed and then do nothing if the required state is present.
Properties
There are following properties can be used to define a guard in windows_power_management resource that is checked during the execution phase of a Chef Infra Client run:
only_if
This allows a resource to execute only if the condition returns true.
not_if
This prevents a resource from executing when the condition returns true.
Examples
The following recipes show alternative techniques to using the windows_power_management resource:
Setup a Power Management Policy:
windows_power_management 'Set the Device to a defined power level' do
power_scheme_label 'Unrestricted'
power_level 'ultimate'
monitor_timeout 30
disk_timeout 0
standby_timeout 0
hibernate_timeout 0
action :set
end
Frequently Asked Question❓
What is Chef in DevOps?
A guide for people new to DevOps With Chef, a DevOps program in your kitchen, becoming an expert in the cloud is much simpler. Chef is an open-source cloud deployment and configuration management tool. Anyone can use it to organize servers in a departmental data center or the cloud.
Is Chef Infra free to use?
Chef Infra is open-source so you can use it for free.
What is Chef infra used for?
A powerful automation platform called Chef Infra turns infrastructure into code. Whatever the size of your network, Chef Infra automates the configuration, deployment, and management of infrastructure across it, whether you're operating in the cloud, on-premises, or a hybrid environment.
What are the resources in chef?
Chef resources are an example of an operating system component in their ideal state. It is a declaration of configuration policy that explains the desired state of a node to be reached by resource providers using the existing configuration.
In which language is Chef written?
Chef is written in ruby and erlang programming language.
Conclusion ✉️
In this article, we have extensively discussed the CHEF- RESOURCES -windows_power_management Resource. If you would like to learn more, check out our articles on
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