mirror of
https://github.com/certbot/certbot.git
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819f95c37d
Using the default value of 16 minutes (960 seconds) for --dns-linode-propagation-seconds leads to DNS failures when the randomly selected Linode DNS is not the first one out of six, due to an additional delay before the other five are updated. The problem can be easily solved by increasing the wait interval, so this commit increases the default value to 20 minutes. More details: https://community.letsencrypt.org/t/dns-servers-used-by-letsencrypt-for-challenges/32127/16
92 lines
3.6 KiB
Python
92 lines
3.6 KiB
Python
"""
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The `~certbot_dns_linode.dns_linode` plugin automates the process of
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completing a ``dns-01`` challenge (`~acme.challenges.DNS01`) by creating, and
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subsequently removing, TXT records using the Linode API.
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Named Arguments
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---------------
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========================================== ===================================
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``--dns-linode-credentials`` Linode credentials_ INI file.
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(Required)
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``--dns-linode-propagation-seconds`` The number of seconds to wait for
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DNS to propagate before asking the
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ACME server to verify the DNS
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record.
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(Default: 1200 because Linode
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updates its first DNS every 15
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minutes and we allow 5 more minutes
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for the update to reach the other 5
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servers)
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========================================== ===================================
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Credentials
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-----------
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Use of this plugin requires a configuration file containing Linode API
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credentials, obtained from your Linode account's `Applications & API
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Tokens page <https://manager.linode.com/profile/api>`_.
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.. code-block:: ini
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:name: credentials.ini
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:caption: Example credentials file:
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# Linode API credentials used by Certbot
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dns_linode_key = 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ64
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The path to this file can be provided interactively or using the
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``--dns-linode-credentials`` command-line argument. Certbot records the path
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to this file for use during renewal, but does not store the file's contents.
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.. caution::
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You should protect these API credentials as you would the password to your
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Linode account. Users who can read this file can use these credentials
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to issue arbitrary API calls on your behalf. Users who can cause Certbot to
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run using these credentials can complete a ``dns-01`` challenge to acquire
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new certificates or revoke existing certificates for associated domains,
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even if those domains aren't being managed by this server.
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Certbot will emit a warning if it detects that the credentials file can be
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accessed by other users on your system. The warning reads "Unsafe permissions
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on credentials configuration file", followed by the path to the credentials
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file. This warning will be emitted each time Certbot uses the credentials file,
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including for renewal, and cannot be silenced except by addressing the issue
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(e.g., by using a command like ``chmod 600`` to restrict access to the file).
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Examples
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--------
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.. code-block:: bash
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:caption: To acquire a certificate for ``example.com``
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certbot certonly \\
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--dns-linode \\
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--dns-linode-credentials ~/.secrets/certbot/linode.ini \\
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-d example.com
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.. code-block:: bash
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:caption: To acquire a single certificate for both ``example.com`` and
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``www.example.com``
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certbot certonly \\
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--dns-linode \\
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--dns-linode-credentials ~/.secrets/certbot/linode.ini \\
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-d example.com \\
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-d www.example.com
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.. code-block:: bash
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:caption: To acquire a certificate for ``example.com``, waiting 1000 seconds
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for DNS propagation (Linode updates its first DNS every 15 minutes
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and we allow some extra time for the update to reach the other 5
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servers)
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certbot certonly \\
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--dns-linode \\
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--dns-linode-credentials ~/.secrets/certbot/linode.ini \\
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--dns-linode-propagation-seconds 1000 \\
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-d example.com
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"""
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