docs: Add warnings about password selection
Some services fail when using special characters in passwords, add some
warnings to our docs.
Closes-Bug: 1744985
Change-Id: I601149e2e7362507b38f01719f7197385a27e0a8
diff --git a/doc/source/guides/single-machine.rst b/doc/source/guides/single-machine.rst
index 0529e30..a4385b5 100644
--- a/doc/source/guides/single-machine.rst
+++ b/doc/source/guides/single-machine.rst
@@ -106,6 +106,9 @@
- Set the service password. This is used by the OpenStack services
(Nova, Glance, etc) to authenticate with Keystone.
+.. warning:: Only use alphanumeric characters in your passwords, as some
+ services fail to work when using special characters.
+
``local.conf`` should look something like this:
.. code-block:: ini