From fee4eee0be654c82edd2f9c5a6e4eb90ee9eb990 Mon Sep 17 00:00:00 2001
From: Eduardo Gonzalez <dabarren@gmail.com>
Date: Wed, 26 Apr 2017 15:57:05 +0200
Subject: [PATCH] Add compute inventory precheck

With nova cells_v2 at least one compute node is required in
inventory to deploy nova.

This change add prechecks to ensure at least 1 compute is present.

Change-Id: I242518ad3bd149ad245515299301777f6b3bdd08
Closes-Bug: #1686410
---
 ansible/roles/nova/tasks/precheck.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ansible/roles/nova/tasks/precheck.yml b/ansible/roles/nova/tasks/precheck.yml
index 21f4e36176..ddc65e282e 100644
--- a/ansible/roles/nova/tasks/precheck.yml
+++ b/ansible/roles/nova/tasks/precheck.yml
@@ -11,6 +11,11 @@
       - placement_api
   register: container_facts
 
+- name: Checking available compute nodes in inventory
+  fail:
+    msg: "At least 1 compute node required in inventory"
+  when: groups['compute'] | length < 1
+
 - name: Checking free port for Nova API
   vars:
     nova_api: "{{ nova_services['nova-api'] }}"