6 1. [Module Description - What the module does and why it is useful](#module-description)
7 1. [Setup - The basics of getting started with apt](#setup)
8 * [What apt affects](#what-apt-affects)
9 * [Beginning with apt](#beginning-with-apt)
10 1. [Usage - Configuration options and additional functionality](#usage)
11 * [Add GPG keys](#add-gpg-keys)
12 * [Prioritize backports](#prioritize-backports)
13 * [Update the list of packages](#update-the-list-of-packages)
14 * [Pin a specific release](#pin-a-specific-release)
15 * [Add a Personal Package Archive repository](#add-a-personal-package-archive-repository)
16 * [Configure Apt from Hiera](#configure-apt-from-hiera)
17 * [Replace the default sources.list file](#replace-the-default-sourceslist-file)
18 1. [Reference - An under-the-hood peek at what the module is doing and how](#reference)
20 * [Defined types](#defined-types)
24 1. [Limitations - OS compatibility, etc.](#limitations)
25 1. [Development - Guide for contributing to the module](#development)
29 The apt module lets you use Puppet to manage Apt sources, keys, and other configuration options.
31 Apt (Advanced Package Tool) is a package manager available on Debian, Ubuntu, and several other operating systems. The apt module provides a series of classes, defines, types, and facts to help you automate Apt package management.
33 **Note**: For this module to correctly autodetect which version of Debian/Ubuntu (or derivative) you're running, you need to make sure the 'lsb-release' package is installed. We highly recommend you either make this part of your provisioning layer, if you run many Debian or derivative systems, or ensure that you have Facter 2.2.0 or later installed, which will pull this dependency in for you.
39 * Your system's `preferences` file and `preferences.d` directory
40 * Your system's `sources.list` file and `sources.list.d` directory
44 **Note:** This module offers `purge` parameters which, if set to `true`, **destroy** any configuration on the node's `sources.list(.d)` and `preferences(.d)` that you haven't declared through Puppet. The default for these parameters is `false`.
46 ### Beginning with apt
48 To use the apt module with default parameters, declare the `apt` class.
54 **Note:** The main `apt` class is required by all other classes, types, and defined types in this module. You must declare it whenever you use the module.
60 **Warning:** Using short key IDs presents a serious security issue, potentially leaving you open to collision attacks. We recommend you always use full fingerprints to identify your GPG keys. This module allows short keys, but issues a security warning if you use them.
62 Declare the `apt::key` defined type:
65 apt::key { 'puppetlabs':
66 id => '6F6B15509CF8E59E6E469F327F438280EF8D349F',
67 server => 'pgp.mit.edu',
68 options => 'http-proxy="http://proxyuser:proxypass@example.org:3128"',
72 ### Prioritize backports
75 class { 'apt::backports':
80 By default, the `apt::backports` class drops a pin file for backports, pinning it to a priority of 200. This is lower than the normal default of 500, so packages with `ensure => latest` don't get upgraded from backports without your explicit permission.
82 If you raise the priority through the `pin` parameter to 500, normal policy goes into effect and Apt installs or upgrades to the newest version. This means that if a package is available from backports, it and its dependencies are pulled in from backports unless you explicitly set the `ensure` attribute of the `package` resource to `installed`/`present` or a specific version.
84 ### Update the list of packages
86 By default, Puppet runs `apt-get update` on the first Puppet run after you include the `apt` class, and anytime `notify => Exec['apt_update']` occurs; i.e., whenever config files get updated or other relevant changes occur. If you set `update['frequency']` to 'always', the update runs on every Puppet run. You can also set `update['frequency']` to 'daily' or 'weekly':
95 When `Exec['apt_update']` is triggered, it generates a `Notice` message. Because the default [logging level for agents](https://docs.puppet.com/puppet/latest/configuration.html#loglevel) is `notice`, this causes the repository update to appear in logs and agent reports. Some tools, such as [The Foreman](https://www.theforeman.org), report the update notice as a significant change. To eliminate these updates from reports, set the [loglevel](https://docs.puppet.com/puppet/latest/metaparameter.html#loglevel) metaparameter for `Exec['apt_update']` above the agent logging level:
100 frequency => 'daily',
106 ### Pin a specific release
109 apt::pin { 'karmic': priority => 700 }
110 apt::pin { 'karmic-updates': priority => 700 }
111 apt::pin { 'karmic-security': priority => 700 }
114 You can also specify more complex pins using distribution properties:
119 originator => 'Debian',
120 release_version => '3.0',
126 To pin multiple packages, pass them to the `packages` parameter as an array or a space-delimited string.
128 ### Add a Personal Package Archive repository
131 apt::ppa { 'ppa:drizzle-developers/ppa': }
134 ### Add an Apt source to `/etc/apt/sources.list.d/`
137 apt::source { 'debian_unstable':
138 comment => 'This is the iWeb Debian unstable mirror',
139 location => 'http://debian.mirror.iweb.ca/debian/',
140 release => 'unstable',
141 repos => 'main contrib non-free',
144 'id' => 'A1BD8E9D78F7FE5C3E65D8AF8B48AD6246925553',
145 'server' => 'subkeys.pgp.net',
154 To use the Puppet Apt repository as a source:
157 apt::source { 'puppetlabs':
158 location => 'http://apt.puppetlabs.com',
161 'id' => '6F6B15509CF8E59E6E469F327F438280EF8D349F',
162 'server' => 'pgp.mit.edu',
167 ### Configure Apt from Hiera
169 Instead of specifying your sources directly as resources, you can instead just
170 include the `apt` class, which will pick up the values automatically from
176 comment: 'This is the iWeb Debian unstable mirror'
177 location: 'http://debian.mirror.iweb.ca/debian/'
179 repos: 'main contrib non-free'
182 id: 'A1BD8E9D78F7FE5C3E65D8AF8B48AD6246925553'
183 server: 'subkeys.pgp.net'
189 location: 'http://apt.puppetlabs.com'
192 id: '6F6B15509CF8E59E6E469F327F438280EF8D349F'
193 server: 'pgp.mit.edu'
196 ### Replace the default `sources.list` file
198 The following example replaces the default `/etc/apt/sources.list`. Along with this code, be sure to use the `purge` parameter, or you might get duplicate source warnings when running Apt.
201 apt::source { "archive.ubuntu.com-${lsbdistcodename}":
202 location => 'http://archive.ubuntu.com/ubuntu',
203 key => '630239CC130E1A7FD81A27B140976EAF437D05B5',
204 repos => 'main universe multiverse restricted',
207 apt::source { "archive.ubuntu.com-${lsbdistcodename}-security":
208 location => 'http://archive.ubuntu.com/ubuntu',
209 key => '630239CC130E1A7FD81A27B140976EAF437D05B5',
210 repos => 'main universe multiverse restricted',
211 release => "${lsbdistcodename}-security"
214 apt::source { "archive.ubuntu.com-${lsbdistcodename}-updates":
215 location => 'http://archive.ubuntu.com/ubuntu',
216 key => '630239CC130E1A7FD81A27B140976EAF437D05B5',
217 repos => 'main universe multiverse restricted',
218 release => "${lsbdistcodename}-updates"
221 apt::source { "archive.ubuntu.com-${lsbdistcodename}-backports":
222 location => 'http://archive.ubuntu.com/ubuntu',
223 key => '630239CC130E1A7FD81A27B140976EAF437D05B5',
224 repos => 'main universe multiverse restricted',
225 release => "${lsbdistcodename}-backports"
229 ### Manage login configuration settings for an APT source or proxy in `/etc/apt/auth.conf`
231 Starting with APT version 1.5, you can define login configuration settings, such as
232 username and password, for APT sources or proxies that require authentication
233 in the `/etc/apt/auth.conf` file. This is preferable to embedding login
234 information directly in `source.list` entries, which are usually world-readable.
236 The `/etc/apt/auth.conf` file follows the format of netrc (used by ftp or
237 curl) and has restrictive file permissions. See
238 https://manpages.debian.org/testing/apt/apt_auth.conf.5.en.html for details.
240 Use the optional `apt::auth_conf_entries` parameter to specify an array of
241 hashes containing login configuration settings. These hashes may only contain
242 the `machine`, `login` and `password` keys.
246 auth_conf_entries => [
248 'machine' => 'apt-proxy.example.net',
249 'login' => 'proxylogin',
250 'password' => 'proxypassword',
253 'machine' => 'apt.example.com/ubuntu',
255 'password' => 'supersecret',
267 * [`apt`](#class-apt)
268 * [`apt::backports`](#class-aptbackports)
272 * `apt::params`: Provides defaults for the apt module parameters.
273 * `apt::update`: Updates the list of available packages using `apt-get update`.
277 * [`apt::conf`](#defined-type-aptconf)
278 * [`apt::key`](#defined-type-aptkey)
279 * [`apt::pin`](#defined-type-aptpin)
280 * [`apt::ppa`](#defined-type-aptppa)
281 * [`apt::setting`](#defined-type-aptsetting)
282 * [`apt::source`](#defined-type-aptsource)
283 * [`apt::proxy`](#defined-type-aptproxy)
287 * [`apt_key`](#type-apt_key)
291 * `apt_updates`: The number of installed packages with available updates from `upgrade`.
293 * `apt_dist_updates`: The number of installed packages with available updates from `dist-upgrade`.
295 * `apt_security_updates`: The number of installed packages with available security updates from `upgrade`.
297 * `apt_security_dist_updates`: The number of installed packages with available security updates from `dist-upgrade`.
299 * `apt_package_updates`: The names of all installed packages with available updates from `upgrade`. In Facter 2.0 and later this data is formatted as an array; in earlier versions it is a comma-delimited string.
301 * `apt_package_dist_updates`: The names of all installed packages with available updates from `dist-upgrade`. In Facter 2.0 and later this data is formatted as an array; in earlier versions it is a comma-delimited string.
303 * `apt_update_last_success`: The date, in epochtime, of the most recent successful `apt-get update` run (based on the mtime of /var/lib/apt/periodic/update-success-stamp).
305 * `apt_reboot_required`: Determines if a reboot is necessary after updates have been installed.
309 The Apt module has an example task that allows a user to run apt-get update or upgrade. Please refer to to the [PE documentation](https://puppet.com/docs/pe/2017.3/orchestrator/running_tasks.html) or [Bolt documentation](https://puppet.com/docs/bolt/latest/bolt.html) on how to execute a task.
313 Main class, includes all other classes.
317 All parameters are optional unless specified.
319 * `confs`: Creates new `apt::conf` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
321 * `keys`: Creates new `apt::key` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
323 * `ppas`: Creates new `apt::ppa` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
325 * `proxy`: Configures Apt to connect to a proxy server. Valid options: a hash matching the locally defined type [`apt::proxy`](#defined-type-aptproxy).
327 * `purge`: Specifies whether to purge any existing settings that aren't managed by Puppet. Valid options: a hash made up from the following keys:
329 * `sources.list`: Specifies whether to purge any unmanaged entries from `sources.list`. Valid options: `true` and `false`. Default: `false`.
331 * `sources.list.d`: Specifies whether to purge any unmanaged entries from `sources.list.d`. Valid options: `true` and `false`. Default: `false`.
333 * `preferences`: Specifies whether to purge any unmanaged entries from `preferences`. Valid options: `true` and `false`. Default: `false`.
335 * `preferences.d`: Specifies whether to purge any unmanaged entries from `preferences.d`. Valid options: `true` and `false`. Default: `false`.
337 * `settings`: Creates new `apt::setting` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
339 * `auth_conf_entries`: An optional array of login configuration settings (hashes) that will be recorded in the file `/etc/apt/auth.conf`. This file has a netrc-like format (similar to what curl uses) and contains the login configuration for APT sources and proxies that require authentication. See https://manpages.debian.org/testing/apt/apt_auth.conf.5.en.html for details. If specified each hash must contain the keys `machine`, `login` and `password` and no others. Default: [].
341 * `sources`: Creates new `apt::source` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
343 * `pins`: Creates new `apt::pin` resources. Valid options: a hash to be passed to the [`create_resources` function](https://docs.puppetlabs.com/references/latest/function.html#createresources). Default: {}.
345 * `update`: Configures various update settings. Valid options: a hash made up from the following keys:
347 * `frequency`: Specifies how often to run `apt-get update`. If the exec resource `apt_update` is notified, `apt-get update` runs regardless of this value. Valid options: 'always' (at every Puppet run); 'daily' (if the value of `apt_update_last_success` is less than current epoch time minus 86400); 'weekly' (if the value of `apt_update_last_success` is less than current epoch time minus 604800); and 'reluctantly' (only if the exec resource `apt_update` is notified). Default: 'reluctantly'.
349 * `timeout`: Specifies how long to wait for the update to complete before canceling it. Valid options: an integer, in seconds. Default: 300.
351 * `tries`: Specifies how many times to retry the update after receiving a DNS or HTTP error. Valid options: an integer. Default: 1.
353 #### Class: `apt::backports`
359 All parameters are optional on Debian and Ubuntu and required on other operating systems, except where specified.
361 * `key`: Specifies a key to authenticate the backports. Valid options: a string to be passed to the `id` parameter of the `apt::key` defined type, or a hash of `parameter => value` pairs to be passed to `apt::key`'s `id`, `server`, `content`, `source`, and/or `options` parameters. Defaults:
363 * Debian: 'A1BD8E9D78F7FE5C3E65D8AF8B48AD6246925553'
364 * Ubuntu: '630239CC130E1A7FD81A27B140976EAF437D05B5'
366 * `location`: Specifies an Apt repository containing the backports to manage. Valid options: a string containing a URL. Defaults:
368 * Debian: 'http://deb.debian.org/debian'
369 * Ubuntu: 'http://archive.ubuntu.com/ubuntu'
371 * `pin`: *Optional.* Specifies a pin priority for the backports. Valid options: a number or string to be passed to the `id` parameter of the `apt::pin` defined type, or a hash of `parameter => value` pairs to be passed to `apt::pin`'s corresponding parameters. Default: '200'.
373 * `release`: Specifies a distribution of the Apt repository containing the backports to manage. Valid options: a string containing the release, used in populating the `source.list` configuration file. Default: on Debian and Ubuntu, '${lsbdistcodename}-backports'. We recommend keeping this default, except on other operating systems.
375 * `repos`: Specifies a component of the Apt repository containing the backports to manage. Valid options: A string containing the repos to include, used in populating the `source.list` configuration file. Defaults:
377 * Debian: 'main contrib non-free'
378 * Ubuntu: 'main universe multiverse restricted'
380 #### Defined Type: `apt::conf`
382 Specifies a custom Apt configuration file.
386 All parameters are optional unless specified.
389 * `content`: *Required, unless `ensure` is set to 'absent'.* Directly supplies content for the configuration file. Valid options: a string. Default: undef.
391 * `ensure`: Specifies whether the configuration file should exist. Valid options: 'present' and 'absent'. Default: 'present'.
393 * `priority`: *Optional.* Determines the order in which Apt processes the configuration file. Files with lower priority numbers are loaded first. Valid options: a string containing an integer. Default: '50'.
395 * `notify_update`: *Optional.* Specifies whether to trigger an `apt-get update` run. Valid options: `true` and `false`. Default: `true`.
397 #### Defined type: `apt::key`
399 Manages the GPG keys that Apt uses to authenticate packages.
401 The `apt::key` defined type makes use of the `apt_key` type, but includes extra functionality to help prevent duplicate keys.
403 ##### Parameters (all optional)
405 * `content`: Supplies the entire GPG key. Useful in case the key can't be fetched from a remote location and using a file resource is inconvenient. Valid options: a string. Default: undef.
407 * `ensure`: Specifies whether the key should exist. Valid options: 'present' and 'absent'. Default: 'present'.
409 * `id`: Specifies a GPG key to authenticate Apt package signatures. Valid options: a string containing a key ID (8 or 16 hexadecimal characters, optionally prefixed with "0x") or a full key fingerprint (40 hexadecimal characters). Default: $title.
411 * `options`: Passes additional options to `apt-key adv --keyserver-options`. Valid options: a string. Default: undef.
413 * `source`: Specifies the location of an existing GPG key file to copy. Valid options: a string containing a URL (ftp://, http://, or https://) or an absolute path. Default: undef.
415 * `server`: Specifies a keyserver to provide the GPG key. Valid options: a string containing a domain name or a full URL (http://, https://, or hkp://). Default: 'keyserver.ubuntu.com'.
417 #### Defined type: `apt::pin`
419 Manages Apt pins. Does not trigger an `apt-get update` run.
421 **Note:** For context on these parameters, we recommend reading the man page ['apt_preferences(5)'](http://linux.die.net/man/5/apt_preferences)
425 All parameters are optional unless specified.
427 * `codename`: Specifies the distribution (lsbdistcodename) of the Apt repository. Valid options: a string. Default: ''.
429 * `component`: Names the licensing component associated with the packages in the directory tree of the Release file. Valid options: a string. Default: ''.
431 * `ensure`: Specifies whether the pin should exist. Valid options: 'file', 'present', and 'absent'. Default: 'present'.
433 * `explanation`: Supplies a comment to explain the pin. Valid options: a string. Default: "${caller_module_name}: ${name}".
435 * `label`: Names the label of the packages in the directory tree of the Release file. Valid options: a string (most commonly, 'debian'). Default: ''.
437 * `order`: Determines the order in which Apt processes the pin file. Files with lower order numbers are loaded first. Valid options: an integer. Default: 50.
439 * `origin`: Tells Apt to prefer packages from the specified server. Valid options: a string containing a hostname. Default: ''.
441 * `originator`: Names the originator of the packages in the directory tree of the Release file. Valid options: a string (most commonly, 'debian'). Default: ''.
443 * `packages`: Specifies which package(s) to pin. Valid options: a string or an array. Default: `*`.
445 * `priority`: Sets the priority of the package. If multiple versions of a given package are available, `apt-get` installs the one with the highest priority number (subject to dependency constraints). Valid options: an integer. Default: 0.
447 * `release`: Tells Apt to prefer packages that support the specified release. Typical values include 'stable', 'testing', and 'unstable' Valid options: a string. Default: ''.
449 * `release_version`: Tells Apt to prefer packages that support the specified operating system release version (such as Debian release version 7). Valid options: a string. Default: ''.
451 * `version`: Tells Apt to prefer a specified package version or version range. Valid options: a string. Default: ''.
453 #### Defined Type: `apt::ppa`
455 Manages PPA repositories using `add-apt-repository`. Not supported on Debian.
459 All parameters are optional unless specified.
461 * `ensure`: Specifies whether the PPA should exist. Valid options: 'present' and 'absent'. Default: 'present'.
463 * `options`: Supplies options to be passed to the `add-apt-repository` command. Valid options: a string. Defaults:
468 * `package_manage`: Specifies whether Puppet should manage the package that provides `apt-add-repository`. Valid options: `true` and `false`. Default: `false`.
470 * `package_name`: Names the package that provides the `apt-add-repository` command. Valid options: a string. Defaults:
472 * Lucid and Precise: 'python-software-properties'
473 * Trusty and newer: 'software-properties-common'
474 * All others: 'python-software-properties'
476 * `release`: *Optional if lsb-release is installed (unless you're using a different release than indicated by lsb-release, e.g., Linux Mint).* Specifies the operating system of your node. Valid options: a string containing a valid LSB distribution codename. Default: "$lsbdistcodename".
478 #### Defined Type: `apt::setting`
480 Manages Apt configuration files.
484 All parameters are optional unless specified.
486 * `content`: *Required, unless `source` is set.* Directly supplies content for the configuration file. Cannot be used in combination with `source`. Valid options: see the `content` attribute of [Puppet's native `file` type](https://docs.puppetlabs.com/references/latest/type.html#file-attribute-content). Default: undef.
488 * `ensure`: Specifies whether the file should exist. Valid options: 'present', 'absent', and 'file'. Default: 'file'.
490 * `notify_update`: *Optional.* Specifies whether to trigger an `apt-get update` run. Valid options: `true` and `false`. Default: `true`.
492 * `priority`: *Optional.* Determines the order in which Apt processes the configuration file. Files with higher priority numbers are loaded first. Valid options: an integer or zero-padded integer. Default: 50.
494 * `source`: *Required, unless `content` is set.* Specifies a source file to supply the content of the configuration file. Cannot be used in combination with `content`. Valid options: see the `source` attribute of [Puppet's native `file` type](https://docs.puppetlabs.com/references/latest/type.html#file-attribute-source). Default: undef.
496 #### Defined Type: `apt::source`
498 Manages the Apt sources in `/etc/apt/sources.list.d/`.
502 All parameters are optional unless specified.
504 * `allow_unsigned`: Specifies whether to authenticate packages from this release, even if the Release file is not signed or the signature can't be checked. Valid options: `true` and `false`. Default: `false`.
506 * `architecture`: Tells Apt to only download information for specified architectures. Valid options: a string containing one or more architecture names, separated by commas (e.g., 'i386' or 'i386,alpha,powerpc'). Default: undef (if unspecified, Apt downloads information for all architectures defined in the Apt::Architectures option).
508 * `comment`: Supplies a comment for adding to the Apt source file. Valid options: a string. Default: $name.
510 * `ensure`: Specifies whether the Apt source file should exist. Valid options: 'present' and 'absent'. Default: 'present'.
512 * `key`: Creates a declaration of the apt::key defined type. Valid options: a string to be passed to the `id` parameter of the `apt::key` defined type, or a hash of `parameter => value` pairs to be passed to `apt::key`'s `id`, `server`, `content`, `source`, and/or `options` parameters. Default: undef.
514 * `include`: Configures include options. Valid options: a hash of available keys. Default: {}. Available keys are:
516 * `deb` - Specifies whether to request the distribution's compiled binaries. Valid options: `true` and `false`. Default: `true`.
518 * `src` - Specifies whether to request the distribution's uncompiled source code. Valid options: `true` and `false`. Default: `false`.
520 * `location`: *Required, unless `ensure` is set to 'absent'.* Specifies an Apt repository. Valid options: a string containing a repository URL. Default: undef.
522 * `pin`: Creates a declaration of the apt::pin defined type. Valid options: a number or string to be passed to the `id` parameter of the `apt::pin` defined type, or a hash of `parameter => value` pairs to be passed to `apt::pin`'s corresponding parameters. Default: undef.
524 * `release`: Specifies a distribution of the Apt repository. Valid options: a string. Default: "$lsbdistcodename".
526 * `repos`: Specifies a component of the Apt repository. Valid options: a string. Default: 'main'.
528 * `notify_update`: *Optional.* Specifies whether to trigger an `apt-get update` run. Valid options: `true` and `false`. Default: `true`.
532 Manages the GPG keys that Apt uses to authenticate packages.
534 **Note:** In most cases, we recommend using the `apt::key` defined type. It makes use of the `apt_key` type, but includes extra functionality to help prevent duplicate keys.
538 All parameters are optional.
540 * `content`: Supplies the entire GPG key. Useful in case the key can't be fetched from a remote location and using a file resource is inconvenient. Cannot be used in combination with `source`. Valid options: a string. Default: `undef`.
542 * `options`: Passes additional options to `apt-key adv --keyserver-options`. Valid options: a string. Default: `undef`.
544 * `server`: Specifies a keyserver to provide Puppet's GPG key. Valid options: a string containing a domain name or a full URL. Default: `keyserver.ubuntu.com`.
546 * `source`: Specifies the location of an existing GPG key file to copy. Cannot be used in combination with `content`. Valid options: a string containing a URL (ftp://, http://, or https://) or an absolute path. Default: `undef`.
548 #### Defined Type: `apt::proxy`
550 Configures Apt to connect to a proxy server.
554 All parameters are optional.
556 * `host`: *Optional.* Specifies a proxy host to be stored in `/etc/apt/apt.conf.d/01proxy`. Valid options: a string containing a hostname. Default: `undef`.
558 * `port`: *Optional.* Specifies a proxy port to be stored in `/etc/apt/apt.conf.d/01proxy`. Valid options: an integer containing a port number. Default: `8080`.
560 * `https`: *Optional.* Specifies whether to enable https proxies. Valid options: `true` and `false`. Default: `false`.
562 * `direct`: *Optional.* Specifies whether or not to use a `DIRECT` https proxy if http proxy is used but https is not. Valid options: `true` and `false`. Default: `false`.
564 * `ensure`: *Optional.* Specifies whether the proxy should exist. Valid options: 'file', 'present', and 'absent'. Default: undef. Prefer 'file' over 'present'.
568 This module is not designed to be split across [run stages](https://docs.puppetlabs.com/puppet/latest/reference/lang_run_stages.html).
570 For an extensive list of supported operating systems, see [metadata.json](https://github.com/puppetlabs/puppetlabs-apt/blob/master/metadata.json)
572 ### Adding new sources or PPAs
574 If you are adding a new source or PPA and trying to install packages from the new source or PPA on the same Puppet run, your `package` resource should depend on `Class['apt::update']`, in addition to depending on the `Apt::Source` or the `Apt::Ppa`. You can also add [collectors](https://docs.puppetlabs.com/puppet/latest/reference/lang_collectors.html) to ensure that all packages happen after `apt::update`, but this can lead to dependency cycles and has implications for [virtual resources](https://docs.puppetlabs.com/puppet/latest/reference/lang_collectors.html#behavior).
577 Class['apt::update'] -> Package <| provider == 'apt' |>
582 Puppet modules on the Puppet Forge are open projects, and community contributions are essential for keeping them great. We can't access the huge number of platforms and myriad hardware, software, and deployment configurations that Puppet is intended to serve. We want to keep it as easy as possible to contribute changes so that our modules work in your environment. There are a few guidelines that we need contributors to follow so that we can have a chance of keeping on top of things.
584 For more information, see our [module contribution guide.](https://docs.puppetlabs.com/forge/contributing.html)
586 To see who's already involved, see the [list of contributors.](https://github.com/puppetlabs/puppetlabs-apt/graphs/contributors)