commit de0eb4e6de865abba33471b56d9f0d067a013746
Author: Toshiaki Takahashi <ts-takahashi@nec.com>
Date:   Sun Aug 23 11:46:45 2020 +0000

    Add note about not use docker on CentOS8
    
    Current docker-ce is not supported in CentOS8.
    So we should add note which explain devstack for using kubernetes
    does not work on CentOS8.
    
    Change-Id: Ie452debd5721093013d78544ef8c4ca03b1a32cc
    (cherry picked from commit a102176db25ef67b448f3e342e9e8151edcf641e)

diff --git a/doc/source/install/devstack.rst b/doc/source/install/devstack.rst
index 5748ccb..f4acea9 100644
--- a/doc/source/install/devstack.rst
+++ b/doc/source/install/devstack.rst
@@ -82,6 +82,11 @@ The first step of installing tacker is to clone Devstack and prepare your
           :language: ini
           :emphasize-lines: 60-65
 
+      .. note::
+
+          The above local.conf.kubernetes does not work on CentOS8.
+          Because docker-ce is not supported on CentOS8.
+
    #. Standalone mode
 
       The ``local.conf`` file of standalone mode from [#f4]_ is shown as below.