yum_repository resource¶

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Use the yum_repository resource to manage a Yum repository configuration file located at /etc/yum.repos.d/repositoryid.repo on the local machine. This configuration file specifies which repositories to reference, how to handle cached data, etc.

New in Chef Client 12.14.

Syntax¶

The yum_repository resource has the following syntax:

yum_repository 'name' do
  baseurl                    String, Array
  clean_headers              true, false # default value: false
  clean_metadata             true, false # default value: true
  cost                       String
  description                String # default value: "Yum Repository"
  enabled                    true, false # default value: true
  enablegroups               true, false
  exclude                    String
  failovermethod             String
  fastestmirror_enabled      true, false
  gpgcheck                   true, false # default value: true
  gpgkey                     String, Array
  http_caching               String
  include_config             String
  includepkgs                String
  keepalive                  true, false
  make_cache                 true, false # default value: true
  max_retries                String, Integer
  metadata_expire            String
  metalink                   String
  mirror_expire              String
  mirrorlist                 String
  mirrorlist_expire          String
  mode                       String, Integer # default value: "0644"
  options                    Hash
  password                   String
  priority                   String
  proxy                      String
  proxy_password             String
  proxy_username             String
  repo_gpgcheck              true, false
  report_instanceid          true, false
  repositoryid               String # default value: 'name' unless specified
  skip_if_unavailable        true, false
  source                     String
  sslcacert                  String
  sslclientcert              String
  sslclientkey               String
  sslverify                  true, false
  throttle                   String, Integer
  timeout                    String
  username                   String
  action                     Symbol # defaults to :create if not specified
end

where:

yum_repository is the resource.
name is the name given to the resource block.
action identifies which steps Chef Infra Client will take to bring the node into the desired state.
baseurl, clean_headers, clean_metadata, cost, description, enabled, enablegroups, exclude, failovermethod, fastestmirror_enabled, gpgcheck, gpgkey, http_caching, include_config, includepkgs, keepalive, make_cache, max_retries, metadata_expire, metalink, mirror_expire, mirrorlist, mirrorlist_expire, mode, options, password, priority, proxy, proxy_password, proxy_username, repo_gpgcheck, report_instanceid, repositoryid, skip_if_unavailable, source, sslcacert, sslclientcert, sslclientkey, sslverify, throttle, timeout, and username are the properties available to this resource.

Actions¶

The yum_repository resource has the following actions:

:create: Creates a repository file and builds the repository listing.
:delete: Deletes the repository file.
:makecache: Updates the yum cache.
:nothing: This resource block does not act unless notified by another resource to take action. Once notified, this resource block either runs immediately or is queued up to run at the end of a Chef Infra Client run.

Properties¶

The yum_repository resource has the following properties:

baseurl

Ruby Type: String, Array

URL to the directory where the Yum repository’s ‘repodata’ directory lives. Can be an http://, https:// or a ftp:// URL. You can specify multiple URLs in one baseurl statement.

clean_headers

Ruby Type: true, false | Default Value: false | DEPRECATED

Specifies whether you want to purge the package data files that are downloaded from a Yum repository and held in a cache directory.

clean_metadata

Ruby Type: true, false | Default Value: true

Specifies whether you want to purge all of the packages downloaded from a Yum repository and held in a cache directory.

cost

Ruby Type: String

Relative cost of accessing this repository. Useful for weighing one repo’s packages as greater/less than any other.

description

Ruby Type: String | Default Value: "Yum Repository"

Descriptive name for the repository channel and maps to the ‘name’ parameter in a repository .conf.

enabled

Ruby Type: true, false | Default Value: true

Specifies whether or not Yum should use this repository.

enablegroups

Ruby Type: true, false

Specifies whether Yum will allow the use of package groups for this repository.

exclude

Ruby Type: String

List of packages to exclude from updates or installs. This should be a space separated list. Shell globs using wildcards (eg. * and ?) are allowed.

failovermethod

Ruby Type: String

Method to determine how to switch to a new server if the current one fails, which can either be roundrobin or priority. roundrobin randomly selects a URL out of the list of URLs to start with and proceeds through each of them as it encounters a failure contacting the host. priority starts from the first baseurl listed and reads through them sequentially.

fastestmirror_enabled

Ruby Type: true, false

Specifies whether to use the fastest mirror from a repository configuration when more than one mirror is listed in that configuration.

gpgcheck

Ruby Type: true, false | Default Value: true

Specifies whether or not Yum should perform a GPG signature check on the packages received from a repository.

gpgkey

Ruby Type: String, Array

URL pointing to the ASCII-armored GPG key file for the repository. This is used if Yum needs a public key to verify a package and the required key hasn’t been imported into the RPM database. If this option is set, Yum will automatically import the key from the specified URL.

Multiple URLs may be specified in the same manner as the baseurl option. If a GPG key is required to install a package from a repository, all keys specified for that repository will be installed.

http_caching

Ruby Type: String

Determines how upstream HTTP caches are instructed to handle any HTTP downloads that Yum does. This option can take the following values:

all means that all HTTP downloads should be cached.
packages means that only RPM package downloads should be cached, but not repository metadata downloads.
none means that no HTTP downloads should be cached.

The default is all. This is recommended unless you are experiencing caching related issues.

include_config

Ruby Type: String

An external configuration file using the format url://to/some/location.

includepkgs

Ruby Type: String

Inverse of exclude property. This is a list of packages you want to use from a repository. If this option lists only one package then that is all Yum will ever see from the repository.

keepalive

Ruby Type: true, false

Determines whether or not HTTP/1.1 keep-alive should be used with this repository.

make_cache

Ruby Type: true, false | Default Value: true

Determines whether package files downloaded by Yum stay in cache directories. By using cached data, you can carry out certain operations without a network connection.

max_retries

Ruby Type: String, Integer

Number of times any attempt to retrieve a file should retry before returning an error. Setting this to ‘0’ makes Yum try forever.

metadata_expire

Ruby Type: String

Time (in seconds) after which the metadata will expire. If the current metadata downloaded is less than the value specified, then Yum will not update the metadata against the repository. If you find that Yum is not downloading information on updates as often as you would like lower the value of this option. You can also change from the default of using seconds to using days, hours or minutes by appending a ‘d’, ‘h’ or ‘m’ respectively. The default is six hours to compliment yum-updates running once per hour. It is also possible to use the word never, meaning that the metadata will never expire. Note: When using a metalink file, the metalink must always be newer than the metadata for the repository due to the validation, so this timeout also applies to the metalink file.

Note

When using a metalink file, the metalink must always be newer than the metadata for the repository due to the validation, so this timeout also applies to the metalink file.

metalink

Ruby Type: String

Specifies a URL to a metalink file for the repomd.xml, a list of mirrors for the entire repository are generated by converting the mirrors for the repomd.xml file to a baseurl.

mirror_expire

Ruby Type: String

Time (in seconds) after which the mirrorlist locally cached will expire. If the current mirrorlist is less than this many seconds old then Yum will not download another copy of the mirrorlist, it has the same extra format as metadata_expire. If you find that Yum is not downloading the mirrorlists as often as you would like lower the value of this option. You can also change from the default of using seconds to using days, hours or minutes by appending a ‘d’, ‘h’ or ‘m’ respectively.

mirrorlist

Ruby Type: String

URL to a file containing a list of baseurls. This can be used instead of or with the baseurl option. Substitution variables, described below, can be used with this option.

mirrorlist_expire

Ruby Type: String

Specifies the time (in seconds) after which the mirrorlist locally cached will expire. If the current mirrorlist is less than the value specified, then Yum will not download another copy of the mirrorlist. You can also change from the default of using seconds to using days, hours or minutes by appending a ‘d’, ‘h’ or ‘m’ respectively.

mode

Ruby Type: String, Integer | Default Value: "0644"

Permissions mode of .repo file on disk. This is useful for scenarios where secrets are in the repo file. If this value is set to ‘600’, normal users will not be able to use Yum search, Yum info, etc.

options

Ruby Type: Hash

Specifies the repository options.

password

Ruby Type: String

Password to use with the username for basic authentication.

priority

Ruby Type: String

Assigns a priority to a repository where the priority value is between ‘1’ and ‘99’ inclusive. Priorities are used to enforce ordered protection of repositories. Packages from repositories with a lower priority (higher numerical value) will never be used to upgrade packages that were installed from a repository with a higher priority (lower numerical value). The repositories with the lowest numerical priority number have the highest priority.

proxy

Ruby Type: String

URL to the proxy server that Yum should use.

proxy_password

Ruby Type: String

Password for this proxy.

proxy_username

Ruby Type: String

Username to use for proxy.

repo_gpgcheck

Ruby Type: true, false

Determines whether or not Yum should perform a GPG signature check on the repodata from this repository.

report_instanceid

Ruby Type: true, false

Determines whether to report the instance ID when using Amazon Linux AMIs and repositories.

repositoryid

Ruby Type: String | Default Value: The resource block's name

An optional property to set the repository name if it differs from the resource block’s name.

skip_if_unavailable

Ruby Type: true, false

Allow yum to continue if this repository cannot be contacted for any reason.

source

Ruby Type: String

Use a custom template source instead of the default one.

sslcacert

Ruby Type: String

Path to the directory containing the databases of the certificate authorities Yum should use to verify SSL certificates.

sslclientcert

Ruby Type: String

Path to the SSL client certificate Yum should use to connect to repos/remote sites.

sslclientkey

Ruby Type: String

Path to the SSL client key Yum should use to connect to repos/remote sites.

sslverify

Ruby Type: true, false

Determines whether Yum will verify SSL certificates/hosts.

throttle

Ruby Type: String, Integer

Enable bandwidth throttling for downloads.

timeout

Ruby Type: String

Number of seconds to wait for a connection before timing out. Defaults to 30 seconds. This may be too short of a time for extremely overloaded sites.

username

Ruby Type: String

Username to use for basic authentication to a repository.

Common Resource Functionality¶

Chef resources include common properties, notifications, and resource guards.

Common Properties¶

The following properties are common to every resource:

ignore_failure

Ruby Type: true, false | Default Value: false

Continue running a recipe if a resource fails for any reason.

retries

Ruby Type: Integer | Default Value: 0

The number of attempts to catch exceptions and retry the resource.

retry_delay

Ruby Type: Integer | Default Value: 2

The retry delay (in seconds).

sensitive

Ruby Type: true, false | Default Value: false

Ensure that sensitive resource data is not logged by Chef Infra Client.

Notifications¶

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 a Chef Infra 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 a Chef Infra 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 a Chef Infra 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 a Chef Infra 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

Guards¶

A guard property can be used to evaluate the state of a node during the execution phase of a Chef Infra Client run. Based on the results of this evaluation, a guard property is then used to tell Chef Infra Client if it should continue executing a resource. A guard property accepts either a string value or a Ruby block value:

A string is executed as a shell command. If the command returns 0, the guard is applied. If the command returns any other value, then the guard property is not applied. String guards in a powershell_script run Windows PowerShell commands and may return true in addition to 0.
A block is executed as Ruby code that must return either true or false. If the block returns true, the guard property is applied. If the block returns false, the guard property is not applied.

A guard property is useful for ensuring that a resource is idempotent by allowing that resource to test for the desired state as it is being executed, and then if the desired state is present, for Chef Infra Client to do nothing.

Properties

The following properties can be used to define a guard that is evaluated during the execution phase of a Chef Infra Client run:

not_if: Prevent a resource from executing when the condition returns true.
only_if: Allow a resource to execute only if the condition returns true.

Examples¶

The following examples demonstrate various approaches for using resources in recipes:

Add internal company repository

yum_repository 'OurCo' do
  description 'OurCo yum repository'
  mirrorlist 'http://artifacts.ourco.org/mirrorlist?repo=ourco-6&arch=$basearch'
  gpgkey 'http://artifacts.ourco.org/pub/yum/RPM-GPG-KEY-OURCO-6'
  action :create
end

Delete a repository

yum_repository 'CentOS-Media' do
  action :delete
end