[PATCH v2] doc: no longer support end of life CentOS versions

[Stephen Hemminger <stephen@networkplumber.org>]

The CentOS Project has shifted focus from CentOS Linux to CentOS Stream.
Both CentOS 7 and 8 are now end of life (EOL).

	CentOS Linux 7 EOL: 2024-06-30
	CentOS Linux 8 EOL: 2021-12-31
	CentOS Stream 8 EOL: 2024-05-31

Update the documentation and release notes. There is no explicit
test in the build process that would block these older versions
but any bug reports or problems will rejected as invalid.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 doc/guides/linux_gsg/sys_reqs.rst      | 4 ++--
 doc/guides/rel_notes/release_24_11.rst | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst
index 13d632cec7..8b39dce938 100644
--- a/doc/guides/linux_gsg/sys_reqs.rst
+++ b/doc/guides/linux_gsg/sys_reqs.rst
@@ -53,7 +53,7 @@ Compilation of the DPDK
 *   ``pyelftools`` (version 0.22+)
 
     * For Fedora systems it can be installed using ``dnf install python-pyelftools``
-    * For RHEL/CentOS systems it can be installed using ``pip3 install pyelftools``
+    * For RHEL systems it can be installed using ``pip3 install pyelftools``
     * For Ubuntu/Debian it can be installed using ``apt install python3-pyelftools``
     * For Alpine Linux, ``apk add py3-elftools``
 
@@ -110,7 +110,7 @@ System Software
 
     The kernel version required is based on the oldest long term stable kernel available
     at kernel.org when the DPDK version is in development.
-    Compatibility for recent distribution kernels will be kept, notably RHEL/CentOS 7.
+    In addition, DPDK maintains compatibility with recent distribution kernels (such as RHEL 8).
 
     The kernel version in use can be checked using the command::
 
diff --git a/doc/guides/rel_notes/release_24_11.rst b/doc/guides/rel_notes/release_24_11.rst
index 48b399cda7..447c24237a 100644
--- a/doc/guides/rel_notes/release_24_11.rst
+++ b/doc/guides/rel_notes/release_24_11.rst
@@ -345,6 +345,12 @@ Removed Items
 * ethdev: Removed the __rte_ethdev_trace_rx_burst symbol, as the corresponding
   tracepoint was split into two separate ones for empty and non-empty calls.
 
+* **Removed support guarantee for CentOS 7 and 8.**
+
+  DPDK can no longer guarantee support for older CentOS releases.
+  CentOS Linux 7 reached end of life (EOL) on 30 June 2024
+  and CentOS Linux 8 stream EOL was 31 May 2024.
+
 
 API Changes
 -----------
-- 
2.45.2