From 7bf2426ff8521eb9ed41c11aa40ffd4c3bd021e4 Mon Sep 17 00:00:00 2001
From: Jimmy McCrory <jimmy.mccrory@gmail.com>
Date: Wed, 31 Oct 2018 16:37:21 -0700
Subject: [PATCH] Retry waiting for initial nova-compute with rescue

Sometimes the nova-compute service doesn't seem to be able to register
itself on its initial service start. Use a block/rescue to restart the
service so a reregistration can be attempted.

Change-Id: Ic82804cc23b89f1cd5bb3a08b74cdcbf29265345
---
 tasks/nova_compute_wait.yml | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/tasks/nova_compute_wait.yml b/tasks/nova_compute_wait.yml
index d6d5cdb1..2d0f5855 100644
--- a/tasks/nova_compute_wait.yml
+++ b/tasks/nova_compute_wait.yml
@@ -21,10 +21,26 @@
   set_fact:
     _wait_nova_bin: "{{ hostvars[first_conductor]['nova_bin'] | default(nova_bin) }}"
 
-- name: Wait for the nova-compute service to initialize
-  command: "{{ _wait_nova_bin }}/openstack --os-cloud default compute service list --service nova-compute --format value --column Host"
-  changed_when: false
-  register: _compute_host_list
-  retries: 10
-  delay: 5
-  until: "compute_host_to_wait_for in _compute_host_list.stdout_lines"
+- block:
+    - name: Wait for the nova-compute service to initialize
+      command: "{{ _wait_nova_bin }}/openstack --os-cloud default compute service list --service nova-compute --format value --column Host"
+      changed_when: false
+      register: _compute_host_list
+      retries: 10
+      delay: 5
+      until: "compute_host_to_wait_for in _compute_host_list.stdout_lines"
+
+  rescue:
+    - name: Restart nova-compute service
+      service:
+        name: "{{ nova_services['nova-compute']['service_name'] }}"
+        state: restarted
+      delegate_to: "{{ compute_host_to_wait_for }}"
+
+    - name: Wait for the nova-compute service to initialize
+      command: "{{ _wait_nova_bin }}/openstack --os-cloud default compute service list --service nova-compute --format value --column Host"
+      changed_when: false
+      register: _compute_host_list
+      retries: 10
+      delay: 5
+      until: "compute_host_to_wait_for in _compute_host_list.stdout_lines"