From deb905b1112637b222fa0eda6ff4f4eb053af609 Mon Sep 17 00:00:00 2001
From: Federico Ressi <fressi@redhat.com>
Date: Wed, 5 May 2021 14:58:44 +0200
Subject: [PATCH] Fix problem in cloud-init integration when no log file is
 writen yet

Change-Id: I830de66b1845eea9dbb4d8475077260f9dd9b995
---
 tobiko/openstack/nova/_cloud_init.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tobiko/openstack/nova/_cloud_init.py b/tobiko/openstack/nova/_cloud_init.py
index e50abc11a..3cef3099f 100644
--- a/tobiko/openstack/nova/_cloud_init.py
+++ b/tobiko/openstack/nova/_cloud_init.py
@@ -190,7 +190,10 @@ def wait_for_cloud_init_status(
                     output_file=str(output_file)) from ex
 
             # show only the last log line
-            last_log_line = str(log_file).splitlines()[-1]
+            try:
+                last_log_line = str(log_file).splitlines()[-1]
+            except IndexError:
+                last_log_line = ""
             LOG.debug(f"Waiting cloud-init status on host '{hostname}' to "
                       f"switch from '{actual_status}' to any of expected "
                       f"states ({', '.join(expected_states)}):\n\n"