Merge pull request #44251 from yaarith/telemetry-opt-in

mgr/telemetry: introduce new design for varying report data

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

diff --cc PendingReleaseNotes
index 71e17c5806c1f841f172af6ae5896e3ff6085930,17dba9b100946a33ac7a601e60896385c2945f6e..3083684a8eee36782c997485d36f7a44d52b56de
--- 1/PendingReleaseNotes
--- 2/PendingReleaseNotes
+++ b/PendingReleaseNotes
@@@ -110,11 -110,17 +110,21 @@@
    by default. For more details, see:
  
    https://docs.ceph.com/en/latest/rados/operations/placement-groups/
 +* Cephadm: ``osd_memory_target_autotune`` will be enabled by default which will set
 +  ``mgr/cephadm/autotune_memory_target_ratio`` to ``0.7`` of total RAM. This will be
 +  unsuitable for hyperconverged infrastructures. For hyperconverged Ceph, please refer
 +  to the documentation or set ``mgr/cephadm/autotune_memory_target_ratio`` to ``0.2``.
  
+ * telemetry: Improved the opt-in flow so that users can keep sharing the same
+   data, even when new data collections are available. A new 'perf' channel
+   that collects various performance metrics is now avaiable to opt-in to with:
+   `ceph telemetry on`
+   `ceph telemetry enable channel perf`
+   See a sample report with `ceph telemetry preview`
+   For more details, see:
+ 
+   https://docs.ceph.com/en/latest/mgr/telemetry/
+ 
  >=16.0.0
  --------
  * mgr/nfs: ``nfs`` module is moved out of volumes plugin. Prior using the