Repository: certbot/certbot (language: python)

Issue:
Deprecate and delete certbot-dns-cloudxns
In the last 60 days, no one has used it with Let's Encrypt and [they've maybe shutdown their service](https://github.com/certbot/certbot/issues/7276). Regardless of the status of their service, no one is using it, so I think we should delete it.

Doing one release with it printing a deprecation warning is what I'd normally recommend and I think is the most conservative option since it's possible I made a mistake in my query or there are certbot-dns-cloudxns users with other CAs, but I think we could probably just delete it everywhere instead if we wanted.


Discussion / hints:
According to comments in https://github.com/acmesh-official/acme.sh/pull/4025, this provider is now fully defunct. 

Although this means there are no longer any legitimate users, I suppose we need to go through a deprecation process anyway to avoid breaking environments where users, who have since moved onto other solutions, might still have an old flag set in `cli.ini`:

    certbot: error: unrecognized arguments: --dns-cloudxns-credentials=/path/to/blah

We got a PR at #9282 but it'll probably take a fair bit of work to get into shape. Once we know what we want to do, that is.

Fix patch:
diff --git a/certbot-dns-cloudxns/LICENSE.txt b/certbot-dns-cloudxns/LICENSE.txt
deleted file mode 100644
index 981c46c9f93..00000000000
--- a/certbot-dns-cloudxns/LICENSE.txt
+++ /dev/null
@@ -1,190 +0,0 @@
-   Copyright 2015 Electronic Frontier Foundation and others
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-
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diff --git a/certbot-dns-cloudxns/MANIFEST.in b/certbot-dns-cloudxns/MANIFEST.in
deleted file mode 100644
index 20810e7ebff..00000000000
--- a/certbot-dns-cloudxns/MANIFEST.in
+++ /dev/null
@@ -1,7 +0,0 @@
-include LICENSE.txt
-include README.rst
-recursive-include docs *
-recursive-include tests *
-include certbot_dns_cloudxns/py.typed
-global-exclude __pycache__
-global-exclude *.py[cod]
diff --git a/certbot-dns-cloudxns/README.rst b/certbot-dns-cloudxns/README.rst
deleted file mode 100644
index b127770df6b..00000000000
--- a/certbot-dns-cloudxns/README.rst
+++ /dev/null
@@ -1,1 +0,0 @@
-CloudXNS DNS Authenticator plugin for Certbot
diff --git a/certbot-dns-cloudxns/certbot_dns_cloudxns/__init__.py b/certbot-dns-cloudxns/certbot_dns_cloudxns/__init__.py
deleted file mode 100644
index 0d098445c3d..00000000000
--- a/certbot-dns-cloudxns/certbot_dns_cloudxns/__init__.py
+++ /dev/null
@@ -1,90 +0,0 @@
-"""
-The `~certbot_dns_cloudxns.dns_cloudxns` plugin automates the process of
-completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
-subsequently removing, TXT records using the CloudXNS API.
-
-.. note::
-   The plugin is not installed by default. It can be installed by heading to
-   `certbot.eff.org <https://certbot.eff.org/instructions#wildcard>`_, choosing your system and
-   selecting the Wildcard tab.
-
-Named Arguments
----------------
-
-========================================  =====================================
-``--dns-cloudxns-credentials``            CloudXNS credentials_ INI file.
-                                          (Required)
-``--dns-cloudxns-propagation-seconds``    The number of seconds to wait for DNS
-                                          to propagate before asking the ACME
-                                          server to verify the DNS record.
-                                          (Default: 30)
-========================================  =====================================
-
-
-Credentials
------------
-
-Use of this plugin requires a configuration file containing CloudXNS API
-credentials, obtained from your CloudXNS
-`API page <https://www.cloudxns.net/en/AccountManage/apimanage.html>`_.
-
-.. code-block:: ini
-   :name: credentials.ini
-   :caption: Example credentials file:
-
-   # CloudXNS API credentials used by Certbot
-   dns_cloudxns_api_key = 1234567890abcdef1234567890abcdef
-   dns_cloudxns_secret_key = 1122334455667788
-
-The path to this file can be provided interactively or using the
-``--dns-cloudxns-credentials`` command-line argument. Certbot records the path
-to this file for use during renewal, but does not store the file's contents.
-
-.. caution::
-   You should protect these API credentials as you would the password to your
-   CloudXNS account. Users who can read this file can use these credentials to
-   issue arbitrary API calls on your behalf. Users who can cause Certbot to run
-   using these credentials can complete a ``dns-01`` challenge to acquire new
-   certificates or revoke existing certificates for associated domains, even if
-   those domains aren't being managed by this server.
-
-Certbot will emit a warning if it detects that the credentials file can be
-accessed by other users on your system. The warning reads "Unsafe permissions
-on credentials configuration file", followed by the path to the credentials
-file. This warning will be emitted each time Certbot uses the credentials file,
-including for renewal, and cannot be silenced except by addressing the issue
-(e.g., by using a command like ``chmod 600`` to restrict access to the file).
-
-
-Examples
---------
-
-.. code-block:: bash
-   :caption: To acquire a certificate for ``example.com``
-
-   certbot certonly \\
-     --dns-cloudxns \\
-     --dns-cloudxns-credentials ~/.secrets/certbot/cloudxns.ini \\
-     -d example.com
-
-.. code-block:: bash
-   :caption: To acquire a single certificate for both ``example.com`` and
-             ``www.example.com``
-
-   certbot certonly \\
-     --dns-cloudxns \\
-     --dns-cloudxns-credentials ~/.secrets/certbot/cloudxns.ini \\
-     -d example.com \\
-     -d www.example.com
-
-.. code-block:: bash
-   :caption: To acquire a certificate for ``example.com``, waiting 60 seconds
-             for DNS propagation
-
-   certbot certonly \\
-     --dns-cloudxns \\
-     --dns-cloudxns-credentials ~/.secrets/certbot/cloudxns.ini \\
-     --dns-cloudxns-propagation-seconds 60 \\
-     -d example.com
-
-"""
diff --git a/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/__init__.py b/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/__init__.py
deleted file mode 100644
index e2177417d8d..00000000000
--- a/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/__init__.py
+++ /dev/null
@@ -1,1 +0,0 @@
-"""Internal implementation of `~certbot_dns_cloudxns.dns_cloudxns` plugin."""
diff --git a/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/dns_cloudxns.py b/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/dns_cloudxns.py
deleted file mode 100644
index 15cdf8aa805..00000000000
--- a/certbot-dns-cloudxns/certbot_dns_cloudxns/_internal/dns_cloudxns.py
+++ /dev/null
@@ -1,93 +0,0 @@
-"""DNS Authenticator for CloudXNS DNS."""
-import logging
-from typing import Any
-from typing import Callable
-from typing import Optional
-
-from lexicon.providers import cloudxns
-from requests import HTTPError
-
-from certbot import errors
-from certbot.plugins import dns_common
-from certbot.plugins import dns_common_lexicon
-from certbot.plugins.dns_common import CredentialsConfiguration
-
-logger = logging.getLogger(__name__)
-
-ACCOUNT_URL = 'https://www.cloudxns.net/en/AccountManage/apimanage.html'
-
-
-class Authenticator(dns_common.DNSAuthenticator):
-    """DNS Authenticator for CloudXNS DNS
-
-    This Authenticator uses the CloudXNS DNS API to fulfill a dns-01 challenge.
-    """
-
-    description = 'Obtain certificates using a DNS TXT record (if you are using CloudXNS for DNS).'
-    ttl = 60
-
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        super().__init__(*args, **kwargs)
-        self.credentials: Optional[CredentialsConfiguration] = None
-
-    @classmethod
-    def add_parser_arguments(cls, add: Callable[..., None],
-                             default_propagation_seconds: int = 30) -> None:
-        super().add_parser_arguments(add, default_propagation_seconds)
-        add('credentials', help='CloudXNS credentials INI file.')
-
-    def more_info(self) -> str:
-        return 'This plugin configures a DNS TXT record to respond to a dns-01 challenge using ' + \
-               'the CloudXNS API.'
-
-    def _setup_credentials(self) -> None:
-        self.credentials = self._configure_credentials(
-            'credentials',
-            'CloudXNS credentials INI file',
-            {
-                'api-key': 'API key for CloudXNS account, obtained from {0}'.format(ACCOUNT_URL),
-                'secret-key': 'Secret key for CloudXNS account, obtained from {0}'
-                              .format(ACCOUNT_URL)
-            }
-        )
-
-    def _perform(self, domain: str, validation_name: str, validation: str) -> None:
-        self._get_cloudxns_client().add_txt_record(domain, validation_name, validation)
-
-    def _cleanup(self, domain: str, validation_name: str, validation: str) -> None:
-        self._get_cloudxns_client().del_txt_record(domain, validation_name, validation)
-
-    def _get_cloudxns_client(self) -> "_CloudXNSLexiconClient":
-        if not self.credentials:  # pragma: no cover
-            raise errors.Error("Plugin has not been prepared.")
-        return _CloudXNSLexiconClient(self.credentials.conf('api-key'),
-                                      self.credentials.conf('secret-key'),
-                                      self.ttl)
-
-
-class _CloudXNSLexiconClient(dns_common_lexicon.LexiconClient):
-    """
-    Encapsulates all communication with the CloudXNS via Lexicon.
-    """
-
-    def __init__(self, api_key: str, secret_key: str, ttl: int) -> None:
-        super().__init__()
-
-        config = dns_common_lexicon.build_lexicon_config('cloudxns', {
-            'ttl': ttl,
-        }, {
-            'auth_username': api_key,
-            'auth_token': secret_key,
-        })
-
-        self.provider = cloudxns.Provider(config)
-
-    def _handle_http_error(self, e: HTTPError, domain_name: str) -> Optional[errors.PluginError]:
-        hint = None
-        if str(e).startswith('400 Client Error:'):
-            hint = 'Are your API key and Secret key values correct?'
-
-        hint_disp = f' ({hint})' if hint else ''
-
-        return errors.PluginError(f'Error determining zone identifier for {domain_name}: '
-                                  f'{e}.{hint_disp}')
diff --git a/certbot-dns-cloudxns/certbot_dns_cloudxns/py.typed b/certbot-dns-cloudxns/certbot_dns_cloudxns/py.typed
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/certbot-dns-cloudxns/docs/.gitignore b/certbot-dns-cloudxns/docs/.gitignore
deleted file mode 100644
index ba65b13af5e..00000000000
--- a/certbot-dns-cloudxns/docs/.gitignore
+++ /dev/null
@@ -1,1 +0,0 @@
-/_build/
diff --git a/certbot-dns-cloudxns/docs/Makefile b/certbot-dns-cloudxns/docs/Makefile
deleted file mode 100644
index ecda13dfe2c..00000000000
--- a/certbot-dns-cloudxns/docs/Makefile
+++ /dev/null
@@ -1,20 +0,0 @@
-# Minimal makefile for Sphinx documentation
-#
-
-# You can set these variables from the command line.
-SPHINXOPTS    =
-SPHINXBUILD   = sphinx-build
-SPHINXPROJ    = certbot-dns-cloudxns
-SOURCEDIR     = .
-BUILDDIR      = _build
-
-# Put it first so that "make" without argument is like "make help".
-help:
-	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
-
-.PHONY: help Makefile
-
-# Catch-all target: route all unknown targets to Sphinx using the new
-# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
-%: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
\ No newline at end of file
diff --git a/certbot-dns-cloudxns/docs/api.rst b/certbot-dns-cloudxns/docs/api.rst
deleted file mode 100644
index ac13c3df297..00000000000
--- a/certbot-dns-cloudxns/docs/api.rst
+++ /dev/null
@@ -1,5 +0,0 @@
-=================
-API Documentation
-=================
-
-Certbot plugins implement the Certbot plugins API, and do not otherwise have an external API.
diff --git a/certbot-dns-cloudxns/docs/conf.py b/certbot-dns-cloudxns/docs/conf.py
deleted file mode 100644
index f516d9a1ef6..00000000000
--- a/certbot-dns-cloudxns/docs/conf.py
+++ /dev/null
@@ -1,181 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# certbot-dns-cloudxns documentation build configuration file, created by
-# sphinx-quickstart on Wed May 10 16:05:50 2017.
-#
-# This file is execfile()d with the current directory set to its
-# containing dir.
-#
-# Note that not all possible configuration values are present in this
-# autogenerated file.
-#
-# All configuration values have a default; values that are commented out
-# serve to show the default.
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-#
-import os
-
-# import sys
-# sys.path.insert(0, os.path.abspath('.'))
-
-
-# -- General configuration ------------------------------------------------
-
-# If your documentation needs a minimal Sphinx version, state it here.
-#
-needs_sphinx = '1.0'
-
-# Add any Sphinx extension module names here, as strings. They can be
-# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
-# ones.
-extensions = ['sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.todo',
-    'sphinx.ext.coverage',
-    'sphinx.ext.viewcode']
-
-autodoc_member_order = 'bysource'
-autodoc_default_flags = ['show-inheritance']
-
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
-
-# The suffix(es) of source filenames.
-# You can specify multiple suffix as a list of string:
-#
-# source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
-
-# The master toctree document.
-master_doc = 'index'
-
-# General information about the project.
-project = u'certbot-dns-cloudxns'
-copyright = u'2017, Certbot Project'
-author = u'Certbot Project'
-
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The short X.Y version.
-version = u'0'
-# The full version, including alpha/beta/rc tags.
-release = u'0'
-
-# The language for content autogenerated by Sphinx. Refer to documentation
-# for a list of supported languages.
-#
-# This is also used if you do content translation via gettext catalogs.
-# Usually you set "language" from the command line for these cases.
-language = 'en'
-
-# List of patterns, relative to source directory, that match files and
-# directories to ignore when looking for source files.
-# This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
-
-default_role = 'py:obj'
-
-# The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
-
-# If true, `todo` and `todoList` produce output, else they produce nothing.
-todo_include_todos = False
-
-
-# -- Options for HTML output ----------------------------------------------
-
-# The theme to use for HTML and HTML Help pages.  See the documentation for
-# a list of builtin themes.
-#
-
-# https://docs.readthedocs.io/en/stable/faq.html#i-want-to-use-the-read-the-docs-theme-locally
-# on_rtd is whether we are on readthedocs.org
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    import sphinx_rtd_theme
-    html_theme = 'sphinx_rtd_theme'
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
-# otherwise, readthedocs.org uses their theme by default, so no need to specify it
-
-# Theme options are theme-specific and customize the look and feel of a theme
-# further.  For a list of options available for each theme, see the
-# documentation.
-#
-# html_theme_options = {}
-
-# Add any paths that contain custom static files (such as style sheets) here,
-# relative to this directory. They are copied after the builtin static files,
-# so a file named "default.css" will overwrite the builtin "default.css".
-#html_static_path = ['_static']
-
-
-# -- Options for HTMLHelp output ------------------------------------------
-
-# Output file base name for HTML help builder.
-htmlhelp_basename = 'certbot-dns-cloudxnsdoc'
-
-
-# -- Options for LaTeX output ---------------------------------------------
-
-latex_elements = {
-    # The paper size ('letterpaper' or 'a4paper').
-    #
-    # 'papersize': 'letterpaper',
-
-    # The font size ('10pt', '11pt' or '12pt').
-    #
-    # 'pointsize': '10pt',
-
-    # Additional stuff for the LaTeX preamble.
-    #
-    # 'preamble': '',
-
-    # Latex figure (float) alignment
-    #
-    # 'figure_align': 'htbp',
-}
-
-# Grouping the document tree into LaTeX files. List of tuples
-# (source start file, target name, title,
-#  author, documentclass [howto, manual, or own class]).
-latex_documents = [
-    (master_doc, 'certbot-dns-cloudxns.tex', u'certbot-dns-cloudxns Documentation',
-     u'Certbot Project', 'manual'),
-]
-
-
-# -- Options for manual page output ---------------------------------------
-
-# One entry per manual page. List of tuples
-# (source start file, name, description, authors, manual section).
-man_pages = [
-    (master_doc, 'certbot-dns-cloudxns', u'certbot-dns-cloudxns Documentation',
-     [author], 1)
-]
-
-
-# -- Options for Texinfo output -------------------------------------------
-
-# Grouping the document tree into Texinfo files. List of tuples
-# (source start file, target name, title, author,
-#  dir menu entry, description, category)
-texinfo_documents = [
-    (master_doc, 'certbot-dns-cloudxns', u'certbot-dns-cloudxns Documentation',
-     author, 'certbot-dns-cloudxns', 'One line description of project.',
-     'Miscellaneous'),
-]
-
-
-
-
-# Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {
-    'python': ('https://docs.python.org/', None),
-    'acme': ('https://acme-python.readthedocs.org/en/latest/', None),
-    'certbot': ('https://eff-certbot.readthedocs.io/en/stable/', None),
-}
diff --git a/certbot-dns-cloudxns/docs/index.rst b/certbot-dns-cloudxns/docs/index.rst
deleted file mode 100644
index 83c6ca18db1..00000000000
--- a/certbot-dns-cloudxns/docs/index.rst
+++ /dev/null
@@ -1,28 +0,0 @@
-.. certbot-dns-cloudxns documentation master file, created by
-   sphinx-quickstart on Wed May 10 16:05:50 2017.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
-Welcome to certbot-dns-cloudxns's documentation!
-================================================
-
-.. toctree::
-   :maxdepth: 2
-   :caption: Contents:
-
-.. automodule:: certbot_dns_cloudxns
-   :members:
-
-.. toctree::
-   :maxdepth: 1
-
-   api
-
-
-
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
diff --git a/certbot-dns-cloudxns/docs/make.bat b/certbot-dns-cloudxns/docs/make.bat
deleted file mode 100644
index dddd6db5634..00000000000
--- a/certbot-dns-cloudxns/docs/make.bat
+++ /dev/null
@@ -1,36 +0,0 @@
-@ECHO OFF
-
-pushd %~dp0
-
-REM Command file for Sphinx documentation
-
-if "%SPHINXBUILD%" == "" (
-	set SPHINXBUILD=sphinx-build
-)
-set SOURCEDIR=.
-set BUILDDIR=_build
-set SPHINXPROJ=certbot-dns-cloudxns
-
-if "%1" == "" goto help
-
-%SPHINXBUILD% >NUL 2>NUL
-if errorlevel 9009 (
-	echo.
-	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
-	echo.installed, then set the SPHINXBUILD environment variable to point
-	echo.to the full path of the 'sphinx-build' executable. Alternatively you
-	echo.may add the Sphinx directory to PATH.
-	echo.
-	echo.If you don't have Sphinx installed, grab it from
-	echo.https://www.sphinx-doc.org/
-	exit /b 1
-)
-
-%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-goto end
-
-:help
-%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-
-:end
-popd
diff --git a/certbot-dns-cloudxns/readthedocs.org.requirements.txt b/certbot-dns-cloudxns/readthedocs.org.requirements.txt
deleted file mode 100644
index c1754a9366a..00000000000
--- a/certbot-dns-cloudxns/readthedocs.org.requirements.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-# readthedocs.org gives no way to change the install command to "pip
-# install -e certbot-dns-cloudxns[docs]" (that would in turn install documentation
-# dependencies), but it allows to specify a requirements.txt file at
-# https://readthedocs.org/dashboard/letsencrypt/advanced/ (c.f. #259)
-
-# Although ReadTheDocs certainly doesn't need to install the project
-# in --editable mode (-e), just "pip install certbot-dns-cloudxns[docs]" does not work as
-# expected and "pip install -e certbot-dns-cloudxns[docs]" must be used instead
-
-# We also pin our dependencies for increased stability.
-
--c ../tools/requirements.txt
--e acme
--e certbot
--e certbot-dns-cloudxns[docs]
diff --git a/certbot-dns-cloudxns/setup.py b/certbot-dns-cloudxns/setup.py
deleted file mode 100644
index acb3dd4ccd1..00000000000
--- a/certbot-dns-cloudxns/setup.py
+++ /dev/null
@@ -1,73 +0,0 @@
-import os
-import sys
-
-from setuptools import find_packages
-from setuptools import setup
-
-version = '1.30.0.dev0'
-
-install_requires = [
-    'dns-lexicon>=3.2.1',
-    'setuptools>=41.6.0',
-]
-
-if not os.environ.get('SNAP_BUILD'):
-    install_requires.extend([
-        # We specify the minimum acme and certbot version as the current plugin
-        # version for simplicity. See
-        # https://github.com/certbot/certbot/issues/8761 for more info.
-        f'acme>={version}',
-        f'certbot>={version}',
-    ])
-elif 'bdist_wheel' in sys.argv[1:]:
-    raise RuntimeError('Unset SNAP_BUILD when building wheels '
-                       'to include certbot dependencies.')
-if os.environ.get('SNAP_BUILD'):
-    install_requires.append('packaging')
-
-docs_extras = [
-    'Sphinx>=1.0',  # autodoc_member_order = 'bysource', autodoc_default_flags
-    'sphinx_rtd_theme',
-]
-
-setup(
-    name='certbot-dns-cloudxns',
-    version=version,
-    description="CloudXNS DNS Authenticator plugin for Certbot",
-    url='https://github.com/certbot/certbot',
-    author="Certbot Project",
-    author_email='certbot-dev@eff.org',
-    license='Apache License 2.0',
-    python_requires='>=3.7',
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Environment :: Plugins',
-        'Intended Audience :: System Administrators',
-        'License :: OSI Approved :: Apache Software License',
-        'Operating System :: POSIX :: Linux',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
-        'Programming Language :: Python :: 3.10',
-        'Topic :: Internet :: WWW/HTTP',
-        'Topic :: Security',
-        'Topic :: System :: Installation/Setup',
-        'Topic :: System :: Networking',
-        'Topic :: System :: Systems Administration',
-        'Topic :: Utilities',
-    ],
-
-    packages=find_packages(),
-    include_package_data=True,
-    install_requires=install_requires,
-    extras_require={
-        'docs': docs_extras,
-    },
-    entry_points={
-        'certbot.plugins': [
-            'dns-cloudxns = certbot_dns_cloudxns._internal.dns_cloudxns:Authenticator',
-        ],
-    },
-)
diff --git a/certbot/certbot/_internal/cli/plugins_parsing.py b/certbot/certbot/_internal/cli/plugins_parsing.py
index f0a976bf4e7..d19825738bb 100644
--- a/certbot/certbot/_internal/cli/plugins_parsing.py
+++ b/certbot/certbot/_internal/cli/plugins_parsing.py
@@ -45,10 +45,6 @@ def _plugins_parsing(helpful: "helpful.HelpfulArgumentParser",
                 default=flag_default("dns_cloudflare"),
                 help=("Obtain certificates using a DNS TXT record (if you are "
                       "using Cloudflare for DNS)."))
-    helpful.add(["plugins", "certonly"], "--dns-cloudxns", action="store_true",
-                default=flag_default("dns_cloudxns"),
-                help=("Obtain certificates using a DNS TXT record (if you are "
-                     "using CloudXNS for DNS)."))
     helpful.add(["plugins", "certonly"], "--dns-digitalocean", action="store_true",
                 default=flag_default("dns_digitalocean"),
                 help=("Obtain certificates using a DNS TXT record (if you are "
diff --git a/certbot/certbot/_internal/constants.py b/certbot/certbot/_internal/constants.py
index 22bba0607cd..ce0b84d2e2f 100644
--- a/certbot/certbot/_internal/constants.py
+++ b/certbot/certbot/_internal/constants.py
@@ -112,7 +112,6 @@
     manual=False,
     webroot=False,
     dns_cloudflare=False,
-    dns_cloudxns=False,
     dns_digitalocean=False,
     dns_dnsimple=False,
     dns_dnsmadeeasy=False,
diff --git a/certbot/certbot/_internal/plugins/disco.py b/certbot/certbot/_internal/plugins/disco.py
index 30409aff05e..707f5ae9d4f 100644
--- a/certbot/certbot/_internal/plugins/disco.py
+++ b/certbot/certbot/_internal/plugins/disco.py
@@ -31,7 +31,6 @@
     "certbot",
     "certbot-apache",
     "certbot-dns-cloudflare",
-    "certbot-dns-cloudxns",
     "certbot-dns-digitalocean",
     "certbot-dns-dnsimple",
     "certbot-dns-dnsmadeeasy",
diff --git a/certbot/certbot/_internal/plugins/selection.py b/certbot/certbot/_internal/plugins/selection.py
index cde6bd221d5..826e1c93275 100644
--- a/certbot/certbot/_internal/plugins/selection.py
+++ b/certbot/certbot/_internal/plugins/selection.py
@@ -168,7 +168,7 @@ def choose_plugin(prepared: List[disco.PluginEntryPoint],
             return None
 
 
-noninstaller_plugins = ["webroot", "manual", "standalone", "dns-cloudflare", "dns-cloudxns",
+noninstaller_plugins = ["webroot", "manual", "standalone", "dns-cloudflare",
                         "dns-digitalocean", "dns-dnsimple", "dns-dnsmadeeasy", "dns-gehirn",
                         "dns-google", "dns-linode", "dns-luadns", "dns-nsone", "dns-ovh",
                         "dns-rfc2136", "dns-route53", "dns-sakuracloud"]
@@ -316,8 +316,6 @@ def cli_plugin_requests(config: configuration.NamespaceConfig
         req_auth = set_configurator(req_auth, "manual")
     if config.dns_cloudflare:
         req_auth = set_configurator(req_auth, "dns-cloudflare")
-    if config.dns_cloudxns:
-        req_auth = set_configurator(req_auth, "dns-cloudxns")
     if config.dns_digitalocean:
         req_auth = set_configurator(req_auth, "dns-digitalocean")
     if config.dns_dnsimple:
diff --git a/certbot/docs/packaging.rst b/certbot/docs/packaging.rst
index a1fb2310044..75349ad14e9 100644
--- a/certbot/docs/packaging.rst
+++ b/certbot/docs/packaging.rst
@@ -12,7 +12,6 @@ We release packages and upload them to PyPI (wheels and source tarballs).
 - https://pypi.python.org/pypi/certbot-apache
 - https://pypi.python.org/pypi/certbot-nginx
 - https://pypi.python.org/pypi/certbot-dns-cloudflare
-- https://pypi.python.org/pypi/certbot-dns-cloudxns
 - https://pypi.python.org/pypi/certbot-dns-digitalocean
 - https://pypi.python.org/pypi/certbot-dns-dnsimple
 - https://pypi.python.org/pypi/certbot-dns-dnsmadeeasy
diff --git a/certbot/docs/using.rst b/certbot/docs/using.rst
index c4f55bc02d7..c43a006fd41 100644
--- a/certbot/docs/using.rst
+++ b/certbot/docs/using.rst
@@ -206,7 +206,6 @@ use the DNS plugins on your system.
 Once installed, you can find documentation on how to use each plugin at:
 
 * `certbot-dns-cloudflare <https://certbot-dns-cloudflare.readthedocs.io>`_
-* `certbot-dns-cloudxns <https://certbot-dns-cloudxns.readthedocs.io>`_
 * `certbot-dns-digitalocean <https://certbot-dns-digitalocean.readthedocs.io>`_
 * `certbot-dns-dnsimple <https://certbot-dns-dnsimple.readthedocs.io>`_
 * `certbot-dns-dnsmadeeasy <https://certbot-dns-dnsmadeeasy.readthedocs.io>`_
diff --git a/tools/_release.sh b/tools/_release.sh
index a9ed017a7fb..368ed21d5ef 100755
--- a/tools/_release.sh
+++ b/tools/_release.sh
@@ -57,7 +57,7 @@ export GPG_TTY=$(tty)
 PORT=${PORT:-1234}
 
 # subpackages to be released (the way the script thinks about them)
-SUBPKGS_NO_CERTBOT="acme certbot-apache certbot-nginx certbot-dns-cloudflare certbot-dns-cloudxns \
+SUBPKGS_NO_CERTBOT="acme certbot-apache certbot-nginx certbot-dns-cloudflare \
                     certbot-dns-digitalocean certbot-dns-dnsimple certbot-dns-dnsmadeeasy \
                     certbot-dns-gehirn certbot-dns-google certbot-dns-linode certbot-dns-luadns \
                     certbot-dns-nsone certbot-dns-ovh certbot-dns-rfc2136 certbot-dns-route53 \
diff --git a/tools/docker/lib/common b/tools/docker/lib/common
index 4ba86cac0e9..bf3598f923a 100644
--- a/tools/docker/lib/common
+++ b/tools/docker/lib/common
@@ -20,7 +20,6 @@ export CERTBOT_PLUGINS=(
     "dns-dnsimple"
     "dns-ovh"
     "dns-cloudflare"
-    "dns-cloudxns"
     "dns-digitalocean"
     "dns-google"
     "dns-luadns"
diff --git a/tools/pinning/current/pyproject.toml b/tools/pinning/current/pyproject.toml
index b5959bc201d..e8358a926d8 100644
--- a/tools/pinning/current/pyproject.toml
+++ b/tools/pinning/current/pyproject.toml
@@ -15,7 +15,6 @@ python = "^3.7"
 certbot-ci = {path = "../../../certbot-ci"}
 certbot-compatibility-test = {path = "../../../certbot-compatibility-test"}
 certbot-dns-cloudflare = {path = "../../../certbot-dns-cloudflare", extras = ["docs"]}
-certbot-dns-cloudxns = {path = "../../../certbot-dns-cloudxns", extras = ["docs"]}
 certbot-dns-digitalocean = {path = "../../../certbot-dns-digitalocean", extras = ["docs"]}
 certbot-dns-dnsimple = {path = "../../../certbot-dns-dnsimple", extras = ["docs"]}
 certbot-dns-dnsmadeeasy = {path = "../../../certbot-dns-dnsmadeeasy", extras = ["docs"]}
diff --git a/tools/pinning/oldest/pyproject.toml b/tools/pinning/oldest/pyproject.toml
index 5585a39f4dc..9b76fdbb5c9 100644
--- a/tools/pinning/oldest/pyproject.toml
+++ b/tools/pinning/oldest/pyproject.toml
@@ -18,7 +18,6 @@ python = "3.7"
 # on acme so certbot must be listed before acme.
 certbot-ci = {path = "../../../certbot-ci"}
 certbot-dns-cloudflare = {path = "../../../certbot-dns-cloudflare"}
-certbot-dns-cloudxns = {path = "../../../certbot-dns-cloudxns"}
 certbot-dns-digitalocean = {path = "../../../certbot-dns-digitalocean"}
 certbot-dns-dnsimple = {path = "../../../certbot-dns-dnsimple"}
 certbot-dns-dnsmadeeasy = {path = "../../../certbot-dns-dnsmadeeasy"}
diff --git a/tools/venv.py b/tools/venv.py
index 2aa5b0a2d59..0721b2b2550 100755
--- a/tools/venv.py
+++ b/tools/venv.py
@@ -27,7 +27,6 @@
     '-e certbot[all]',
     '-e certbot-apache',
     '-e certbot-dns-cloudflare',
-    '-e certbot-dns-cloudxns',
     '-e certbot-dns-digitalocean',
     '-e certbot-dns-dnsimple',
     '-e certbot-dns-dnsmadeeasy',
diff --git a/tox.cover.py b/tox.cover.py
index 1f8f9dcced0..f1e400eb8bd 100755
--- a/tox.cover.py
+++ b/tox.cover.py
@@ -7,7 +7,7 @@
 import sys
 
 DEFAULT_PACKAGES = [
-    'certbot', 'acme', 'certbot_apache', 'certbot_dns_cloudflare', 'certbot_dns_cloudxns',
+    'certbot', 'acme', 'certbot_apache', 'certbot_dns_cloudflare',
     'certbot_dns_digitalocean', 'certbot_dns_dnsimple', 'certbot_dns_dnsmadeeasy',
     'certbot_dns_gehirn', 'certbot_dns_google', 'certbot_dns_linode', 'certbot_dns_luadns',
     'certbot_dns_nsone', 'certbot_dns_ovh', 'certbot_dns_rfc2136', 'certbot_dns_route53',
@@ -18,7 +18,6 @@
     'acme': {'linux': 100, 'windows': 99},
     'certbot_apache': {'linux': 100, 'windows': 100},
     'certbot_dns_cloudflare': {'linux': 98, 'windows': 98},
-    'certbot_dns_cloudxns': {'linux': 98, 'windows': 98},
     'certbot_dns_digitalocean': {'linux': 98, 'windows': 98},
     'certbot_dns_dnsimple': {'linux': 98, 'windows': 98},
     'certbot_dns_dnsmadeeasy': {'linux': 99, 'windows': 99},
diff --git a/tox.ini b/tox.ini
index 03f638c0efa..f4776328d99 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,10 +17,10 @@ install_and_test = python {toxinidir}/tools/install_and_test.py
 # Packages are listed on one line because tox seems to have inconsistent
 # behavior with substitutions that contain line continuations, see
 # https://github.com/tox-dev/tox/issues/2069 for more info.
-dns_packages = certbot-dns-cloudflare certbot-dns-cloudxns certbot-dns-digitalocean certbot-dns-dnsimple certbot-dns-dnsmadeeasy certbot-dns-gehirn certbot-dns-google certbot-dns-linode certbot-dns-luadns certbot-dns-nsone certbot-dns-ovh certbot-dns-rfc2136 certbot-dns-route53 certbot-dns-sakuracloud
+dns_packages = certbot-dns-cloudflare certbot-dns-digitalocean certbot-dns-dnsimple certbot-dns-dnsmadeeasy certbot-dns-gehirn certbot-dns-google certbot-dns-linode certbot-dns-luadns certbot-dns-nsone certbot-dns-ovh certbot-dns-rfc2136 certbot-dns-route53 certbot-dns-sakuracloud
 win_all_packages = acme[test] certbot[test] {[base]dns_packages} certbot-nginx
 all_packages = {[base]win_all_packages} certbot-apache
-source_paths = acme/acme certbot/certbot certbot-apache/certbot_apache certbot-ci/certbot_integration_tests certbot-ci/snap_integration_tests certbot-ci/windows_installer_integration_tests certbot-compatibility-test/certbot_compatibility_test certbot-dns-cloudflare/certbot_dns_cloudflare certbot-dns-cloudxns/certbot_dns_cloudxns certbot-dns-digitalocean/certbot_dns_digitalocean certbot-dns-dnsimple/certbot_dns_dnsimple certbot-dns-dnsmadeeasy/certbot_dns_dnsmadeeasy certbot-dns-gehirn/certbot_dns_gehirn certbot-dns-google/certbot_dns_google certbot-dns-linode/certbot_dns_linode certbot-dns-luadns/certbot_dns_luadns certbot-dns-nsone/certbot_dns_nsone certbot-dns-ovh/certbot_dns_ovh certbot-dns-rfc2136/certbot_dns_rfc2136 certbot-dns-route53/certbot_dns_route53 certbot-dns-sakuracloud/certbot_dns_sakuracloud certbot-nginx/certbot_nginx tests/lock_test.py
+source_paths = acme/acme certbot/certbot certbot-apache/certbot_apache certbot-ci/certbot_integration_tests certbot-ci/snap_integration_tests certbot-ci/windows_installer_integration_tests certbot-compatibility-test/certbot_compatibility_test certbot-dns-cloudflare/certbot_dns_cloudflare certbot-dns-digitalocean/certbot_dns_digitalocean certbot-dns-dnsimple/certbot_dns_dnsimple certbot-dns-dnsmadeeasy/certbot_dns_dnsmadeeasy certbot-dns-gehirn/certbot_dns_gehirn certbot-dns-google/certbot_dns_google certbot-dns-linode/certbot_dns_linode certbot-dns-luadns/certbot_dns_luadns certbot-dns-nsone/certbot_dns_nsone certbot-dns-ovh/certbot_dns_ovh certbot-dns-rfc2136/certbot_dns_rfc2136 certbot-dns-route53/certbot_dns_route53 certbot-dns-sakuracloud/certbot_dns_sakuracloud certbot-nginx/certbot_nginx tests/lock_test.py
 
 [testenv]
 passenv =


Test patch:
diff --git a/certbot-dns-cloudxns/tests/dns_cloudxns_test.py b/certbot-dns-cloudxns/tests/dns_cloudxns_test.py
deleted file mode 100644
index 81dea5ca4ec..00000000000
--- a/certbot-dns-cloudxns/tests/dns_cloudxns_test.py
+++ /dev/null
@@ -1,58 +0,0 @@
-"""Tests for certbot_dns_cloudxns._internal.dns_cloudxns."""
-
-import unittest
-
-try:
-    import mock
-except ImportError: # pragma: no cover
-    from unittest import mock # type: ignore
-from requests.exceptions import HTTPError
-from requests.exceptions import RequestException
-
-from certbot.compat import os
-from certbot.plugins import dns_test_common
-from certbot.plugins import dns_test_common_lexicon
-from certbot.tests import util as test_util
-
-DOMAIN_NOT_FOUND = Exception('No domain found')
-GENERIC_ERROR = RequestException
-LOGIN_ERROR = HTTPError('400 Client Error: ...')
-
-API_KEY = 'foo'
-SECRET = 'bar'
-
-
-class AuthenticatorTest(test_util.TempDirTestCase,
-                        dns_test_common_lexicon.BaseLexiconAuthenticatorTest):
-
-    def setUp(self):
-        super().setUp()
-
-        from certbot_dns_cloudxns._internal.dns_cloudxns import Authenticator
-
-        path = os.path.join(self.tempdir, 'file.ini')
-        dns_test_common.write({"cloudxns_api_key": API_KEY, "cloudxns_secret_key": SECRET}, path)
-
-        self.config = mock.MagicMock(cloudxns_credentials=path,
-                                     cloudxns_propagation_seconds=0)  # don't wait during tests
-
-        self.auth = Authenticator(self.config, "cloudxns")
-
-        self.mock_client = mock.MagicMock()
-        # _get_cloudxns_client | pylint: disable=protected-access
-        self.auth._get_cloudxns_client = mock.MagicMock(return_value=self.mock_client)
-
-
-class CloudXNSLexiconClientTest(unittest.TestCase, dns_test_common_lexicon.BaseLexiconClientTest):
-
-    def setUp(self):
-        from certbot_dns_cloudxns._internal.dns_cloudxns import _CloudXNSLexiconClient
-
-        self.client = _CloudXNSLexiconClient(API_KEY, SECRET, 0)
-
-        self.provider_mock = mock.MagicMock()
-        self.client.provider = self.provider_mock
-
-
-if __name__ == "__main__":
-    unittest.main()  # pragma: no cover