Bug#27675380 - ADD INFO ABOUT -DEFAULT-AUTHENTICATION-PLUGIN IN MY.CNF DOCKER RPM PKGS

     Starting MySQL 8.0.4, the default-authentication-plugin was changed to caching_sha2_password, this might cause
     connnection issues for various clients.

     For Docker RPM packages, Add comment on how to revert to previous default in my.cnf for easy transition.

Author: bkandasa

packaging/rpm-docker/my.cnf.in

@@ -17,6 +17,11 @@
 # join_buffer_size = 128M
 # sort_buffer_size = 2M
 # read_rnd_buffer_size = 2M
+
+# Remove leading # to revert to previous value for default_authentication_plugin,
+# this will increase compatibility with older clients. For background, see:
+# https://dev.mysql.com/doc/refman/@MYSQL_BASE_VERSION@/en/server-system-variables.html#sysvar_default_authentication_plugin
+# default-authentication-plugin=mysql_native_password
 skip-host-cache
 skip-name-resolve
 datadir=@INSTALL_MYSQLDATADIR@