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Document OCSP remap requirement #12952

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Document OCSP remap requirement #12952

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b3fc06e
Document OCSP remap requirement
Mar 10, 2026
d242c48
Add OCSP note to ATS 10 upgrade guide
Mar 10, 2026
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9 changes: 8 additions & 1 deletion doc/admin-guide/security/index.en.rst
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Expand Up @@ -334,6 +334,14 @@ Authority Information Access field of the signed certificate. For example::
OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/DigiCertSHA2SecureServerCA.crt

Before ATS 10, OCSP fetches were handled by OpenSSL. Starting in ATS 10,
|TS| performs the OCSP fetch itself through FetchSM, so the OCSP responder URL
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Copilot AI Mar 10, 2026

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Line 338 has ||TS| (double pipe), which will render incorrectly in Sphinx and likely break the |TS| substitution. Replace it with |TS|.

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must also be reachable through :file:`remap.config`. For example, if the
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@maskit maskit Mar 10, 2026

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This shouldn't be true.
#10146

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@bneradt bneradt Mar 10, 2026

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Ah, good point. OK, I'll close this PR. The remap.config rules shouldn't be needed for OCSP fetch.

certificate points to ``http://ocsp.digicert.com/`` as its OCSP responder, add
the following mapping::

map http://ocsp.digicert.com/ http://ocsp.digicert.com/

|TS| can also use prefetched OCSP stapling responses if ssl_ocsp_name parameter
is used in :file:`ssl_multicert.config`. Take into account that when using prefetched
OCSP stapling responses, |TS| will not refresh them and it should be done
Expand Down Expand Up @@ -395,4 +403,3 @@ To configure Split DNS:
enabled: 1

#. Run the command :option:`traffic_ctl config reload` to apply the configuration changes.

10 changes: 10 additions & 0 deletions doc/release-notes/upgrading.en.rst
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Expand Up @@ -182,6 +182,16 @@ The following :file:`records.yaml` changes have been made:
allocating iobuffers and cache volumes from hugepages if configured in the
system.
- The records.yaml entry ``proxy.config.plugin.compiler_path`` has been added to specify an optional compiler tool path for compiling plugins.
- If OCSP stapling is enabled, ATS 10 and later fetch OCSP responses through
FetchSM instead of OpenSSL. Add the OCSP responder URL from the certificate
to :file:`remap.config`. For example, a certificate that uses
``http://ocsp.digicert.com/`` needs the following mapping:

.. code-block:: none

map http://ocsp.digicert.com/ http://ocsp.digicert.com/

See :ref:`admin-ocsp-stapling` for more details.
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Copilot AI Mar 10, 2026

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This new bullet is placed under 'The following records.yaml changes have been made', but it describes a remap.config requirement (not a records.yaml change). Consider moving this note to a more appropriate upgrade subsection (e.g., SSL/OCSP, or a general 'behavior changes' section) to avoid misleading readers.

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The following changes have been made to the :file:`sni.yaml` file:

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