@@ -22,9 +22,24 @@ sourced with one or more arguments, the first of which defines the hook phase:

     stack: called by stack.sh.  There are four possible values for

         the second arg to distinguish the phase stack.sh is in:

-        arg 2:  install | post-config | extra | post-extra

+        arg 2:  pre-install | install | post-config | extra

     unstack: called by unstack.sh

     clean: called by clean.sh.  Remember, clean.sh also calls unstack.sh

         so that work need not be repeated.

+

+The `stack` phase sub-phases are called from `stack.sh` in the following places:

+

+    pre-install - After all system prerequisites have been installed but before any

+        DevStack-specific services are installed (including database and rpc).

+

+    install - After all OpenStack services have been installed and configured

+        but before any OpenStack services have been started.  Changes to OpenStack

+        service configurations should be done here.

+

+    post-config - After OpenStack services have been initialized but still before

+        they have been started. (This is probably mis-named, think of it as post-init.)

+

+    extra - After everything is started.

+

@@ -668,6 +668,18 @@ fi

 # Do the ugly hacks for borken packages and distros

 $TOP_DIR/tools/fixup_stuff.sh

+

+# Extras Pre-install

+# ------------------

+

+# Phase: pre-install

+if [[ -d $TOP_DIR/extras.d ]]; then

+    for i in $TOP_DIR/extras.d/*.sh; do

+        [[ -r $i ]] && source $i stack pre-install

+    done

+fi

+

+

 install_rpc_backend

 if is_service_enabled $DATABASE_BACKENDS; then