rhsm_errata_level resource¶

[edit on GitHub]

Use the rhsm_errata_level resource to install all packages of a specified errata level from the Red Hat Subscription Manager. For example, you can ensure that all packages associated with errata marked at a “Critical” security level are installed.

The available errata levels are: critical, moderate, important, and low.

New in Chef Client 14.0.

Syntax¶

The rhsm_errata_level resource has the following syntax:

rhsm_errata_level 'name' do
  errata_level               String # default value: 'name'
  notifies                   # see description
  subscribes                 # see description
  action                     Symbol # defaults to :install if not specified
end

where:

rhsm_errata_level is the resource.
'name' is the errata level to install packages from, or the resource name
errata_level, notifies, and subscribes are the properties available to this resource

Actions¶

The rhsm_errata_level resource has the following actions:

:install: Default. Install all packages of the specified errata level.
:nothing: Define this resource block to do nothing until notified by another resource to take action. When this resource is notified, this resource block is either run immediately or it is queued up to be run at the end of the Chef Client run.

Properties¶

The rhsm_errata_level resource has the following properties:

errata_level

Ruby Type: String

The errata level of packages to install, if it differs from the resource name.

notifies

Ruby Type: Symbol, ‘Chef::Resource[String]’

A resource may notify another resource to take action when its state changes. Specify a 'resource[name]', the :action that resource should take, and then the :timer for that action. A resource may notify more than one resource; use a notifies statement for each resource to be notified.

A timer specifies the point during the Chef Client run at which a notification is run. The following timers are available:

:before: Specifies that the action on a notified resource should be run before processing the resource block in which the notification is located.
:delayed: Default. Specifies that a notification should be queued up, and then executed at the end of the Chef Client run.
:immediate, :immediately: Specifies that a notification should be run immediately, per resource notified.

The syntax for notifies is:

notifies :action, 'resource[name]', :timer

subscribes

Ruby Type: Symbol, ‘Chef::Resource[String]’

A resource may listen to another resource, and then take action if the state of the resource being listened to changes. Specify a 'resource[name]', the :action to be taken, and then the :timer for that action.

Note that subscribes does not apply the specified action to the resource that it listens to - for example:

file '/etc/nginx/ssl/example.crt' do
   mode '0600'
   owner 'root'
end

service 'nginx' do
   subscribes :reload, 'file[/etc/nginx/ssl/example.crt]', :immediately
end

In this case the subscribes property reloads the nginx service whenever its certificate file, located under /etc/nginx/ssl/example.crt, is updated. subscribes does not make any changes to the certificate file itself, it merely listens for a change to the file, and executes the :reload action for its resource (in this example nginx) when a change is detected.

A timer specifies the point during the Chef Client run at which a notification is run. The following timers are available:

:before: Specifies that the action on a notified resource should be run before processing the resource block in which the notification is located.
:delayed: Default. Specifies that a notification should be queued up, and then executed at the end of the Chef Client run.
:immediate, :immediately: Specifies that a notification should be run immediately, per resource notified.

The syntax for subscribes is:

subscribes :action, 'resource[name]', :timer

Examples¶

Install all files from the “important” errata level

rhsm_errata_level 'important'

Specify an errata level that differs from the resource name

rhsm_errata_level 'example_install_moderate' do
  errata_level 'moderate'
end