support targeting localhost

when targeting localhost, synthesize an initial inventory file before
calling ansible.  this resolves #36.

Change-Id: I6459de70db2a912a348fe0cec5c49240abaa4687

playbooks/provision.yml

@@ -17,10 +17,9 @@
 # We need to force-refresh facts because we are now connecting
 # as a different user ('stack' instead of 'root'), which affects
 # things like ansible_user_id and friends.
-- name: Install libvirt packages and configure networks
+- name: Tear down environment
   hosts: virthost
   pre_tasks:
     - setup:
   roles:
     - environment/teardown
-    - environment/setup

playbooks/quickstart.yml

@@ -1,5 +1,14 @@
 ---
 - include: provision.yml
+  tags:
+    - provision
+
+- name: Install libvirt packages and configure networks
+  hosts: virthost
+  tags:
+    - environment
+  roles:
+    - environment/setup
 
 - name:  Setup undercloud and baremetal vms and networks in libvirt
   hosts: virthost
@@ -8,9 +17,10 @@
     - libvirt/teardown
     - libvirt/setup
 
+# This adds the undercloud node to the generated 
+# inventory.
 - name: Rebuild inventory
   hosts: localhost
-  gather_facts: no
   roles:
     - rebuild-inventory
 

playbooks/roles/provision/local/tasks/main.yml

@@ -15,7 +15,7 @@
 
 - name: Add the virthost to the inventory
   add_host:
-    name: "host0"
+    name: "{{virthost}}"
     groups: "virthost"
     ansible_fqdn: "{{ virthost }}"
     ansible_user: "root"

playbooks/roles/provision/remote/tasks/main.yml

@@ -45,7 +45,7 @@
 
 - name: Re-add the virthost to the inventory
   add_host:
-    name: "host0"
+    name: "{{ virthost }}"
     groups: "virthost"
     ansible_fqdn: "{{ virthost }}"
     ansible_user: "{{ non_root_user }}"

quickstart.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-DEFAULT_OPT_TAGS="untagged,undercloud-scripts,overcloud-scripts"
+DEFAULT_OPT_TAGS="untagged,provision,undercloud-scripts,overcloud-scripts"
 
 : ${OPT_BOOTSTRAP:=0}
 : ${OPT_SYSTEM_PACKAGES:=0}
@@ -63,6 +63,7 @@ usage () {
     echo "    --working-dir <directory>"
     echo "    --undercloud-image-url <url>"
     echo "    --tags <tag1>[,<tag2>,...]"
+    echo "    --skip-tags <tag1>,[<tag2>,...]"
     echo "    --config <file>"
 }
 
@@ -100,6 +101,11 @@ while [ "x$1" != "x" ]; do
             shift
             ;;
 
+        --skip-tags)
+            OPT_SKIP_TAGS=$2
+            shift
+            ;;
+
         --config|-c)
             OPT_CONFIG=$2
             shift
@@ -205,6 +211,14 @@ set -ex
 export ANSIBLE_CONFIG=$OOOQ_DIR/ansible.cfg
 export ANSIBLE_INVENTORY=$OPT_WORKDIR/hosts
 
+if [ "$VIRTHOST" = "localhost" ]; then
+    echo "$0: WARNING: VIRTHOST == localhost; skipping provisioning" >&2
+    OPT_SKIP_TAGS="${OPT_SKIP_TAGS:+$OPT_SKIP_TAGS,}provision"
+
+    echo "[virthost]" > $ANSIBLE_INVENTORY
+    echo "localhost ansible_connection=local" >> $ANSIBLE_INVENTORY
+fi
+
 if [ "$OPT_DEBUG_ANSIBLE" = 1 ]; then
     VERBOSITY=vvvv
 else
@@ -217,7 +231,8 @@ ansible-playbook -$VERBOSITY $OOOQ_DIR/playbooks/quickstart.yml \
     -e image_url=$OPT_UNDERCLOUD_URL \
     -e local_working_dir=$OPT_WORKDIR \
     -e virthost=$VIRTHOST \
-    ${OPT_TAGS:+-t $OPT_TAGS}
+    ${OPT_TAGS:+-t $OPT_TAGS} \
+    ${OPT_SKIP_TAGS:+--skip-tags $OPT_SKIP_TAGS}
 
 # We only print out further usage instructions when using the default
 # tags, since this is for new users (and not even applicable to some tags).