[trafficserver] branch 9.0.x updated: Updated upgrading release notes for ATS 9.0.0 - page 28

[bc...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

bcall pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new 640dfcd  Updated upgrading release notes for ATS 9.0.0 - page 28
640dfcd is described below

commit 640dfcd2128de09df358a95c438053863425b948
Author: Bryan Call <bc...@apache.org>
AuthorDate: Wed Jan 13 08:13:32 2021 -0800

    Updated upgrading release notes for ATS 9.0.0 - page 28
---
 doc/release-notes/upgrading.en.rst | 58 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

diff --git a/doc/release-notes/upgrading.en.rst b/doc/release-notes/upgrading.en.rst
index 33a7dfc..59d1524 100644
--- a/doc/release-notes/upgrading.en.rst
+++ b/doc/release-notes/upgrading.en.rst
@@ -43,7 +43,7 @@ We are moving configurations over to YAML, and thus far, the following configura
 
 In addition, a new file for TLS handshake negotiation configuration is added:
 
-* :file:`sni.yaml` (this was for a while named ssl_server_name.config in Github)
+* :file:`sni.yaml` (this was for a while named ssl_server_name.yaml in Github)
 
 Configuration Settings: records.config
 --------------------------------------
@@ -86,6 +86,15 @@ or modify the `Vary` header on server responses instead.
 * `proxy.config.http.cache.vary_default_images`
 * `proxy.config.http.cache.vary_default_other`
 
+SSLv3 support has been removed
+
+* `proxy.config.ssl.client.SSLv3`
+
+The option to disable the caching of an empty response (zero length body response) has been removed.  Zero length body responses are no
+longer a special case and are handled the same as a response with a non-zero length body.
+
+* `proxy.config.http.cache.allow_empty_doc`
+
 Deprecated records.config settings
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -114,11 +123,15 @@ The following settings have changed from being `on` by default, to being off:
 * :ts:cv:`proxy.config.ssl.client.TLSv1`
 * :ts:cv:`proxy.config.ssl.client.TLSv1_1`
 
+The default cipher list has changed:
+
+* :ts:cv:`proxy.config.ssl.server.cipher_suite`
+
 
 Metrics
 -------
 
-Renamed or modified metrics
+Renamed or Modified Metrics
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 `proxy.process.http2.current_client_sessions` is renamed to be :ts:stat:`proxy.process.http2.current_client_connections`
@@ -127,6 +140,20 @@ Renamed or modified metrics
 the number current of HTTP/1.1 client requests.  Please use :ts:stat:`proxy.process.http2.current_client_streams` to get the number of current HTTP/2
 client requests.
 
+Removed Metrics
+~~~~~~~~~~~~~~~
+
+The following metrics have been removed.
+
+* `proxy.process.ssl.ssl_error_want_read`
+* `proxy.process.ssl.ssl_error_want_write`
+* `proxy.process.ssl.ssl_error_want_x509_lookup`
+* `proxy.process.ssl.ssl_error_zero_return`
+
+Command Line Options
+--------------------
+`--with-max-api-stats` was replace with `--maxRecords` to specify the total number of metric instead of just the total API metrics to use when running ATS.
+
 Deprecated or Removed Features
 ------------------------------
 
@@ -135,6 +162,11 @@ should be avoided, with the expectation that they will be removed in the next ma
 
 Removed the log collation feature along with its configuration settings (`proxy.local.log.collation*`).
 
+Rollback Configuration
+~~~~~~~~~~~~~~~~~~~~~~
+The rollback configuration code was removed in for ATS v9.0.0.  This featured copied the configuration files to have version
+numbers if the end user wanted to rollback to a previous version of the configuration.
+
 API Changes
 -----------
 
@@ -170,6 +202,28 @@ but if you do run into this, clearing the cache is required.
 Plugins
 -------
 
+Promoted Plugins
+~~~~~~~~~~~~~~~~
+
+The following plugins have been promoted from experimental to stable plugins:
+* :ts:cv:`cache_range_requests`
+* :ts:cv:`certifier`
+* :ts:cv:`multiplexer`
+* :ts:cv:`prefetch`
+* :ts:cv:`remap_purge`
+
+Removed Plugins
+~~~~~~~~~~~~~~~
+
+The following plugins have been removed because they are no longer used or maintained:
+* `balancer`
+* `buffer_uplaod`
+* `header_normalize`
+* `hipes`
+* `memcached_remap`
+* `stale_while_revalidate`
+* `mysql_remap`
+
 The following plugins have changes that might require you to change
 configurations.