Create symlinks for failed builds logs

This allows to know which image failed to build without having to parse
the huge job-output.txt file.

This commit creates a convenient 000_FAILED_image_name.log symlink to
the relevant log files when kolla is configured to output to a log
directory. This creates symlinks only for the parent image with error,
i.e. it skips images that failed to build because of parent error.

Change-Id: I05954e2335dc3fac469276809c91f9c87e3ecab2

1 files changed, 4 insertions, 0 deletions

diff --git a/kolla/image/build.py b/kolla/image/build.py
index cd59aa260..8f617c69e 100755
--- a/kolla/image/build.py
+++ b/kolla/image/build.py
@@ -1018,6 +1018,10 @@ class KollaWorker(object):
                     'name': name,
                     'status': status,
                 })
+                if self.conf.logs_dir and status == STATUS_ERROR:
+                    os.symlink("%s.log" % name,
+                               os.path.join(self.conf.logs_dir,
+                                            "000_FAILED_%s.log" % name))
 
         if self.image_statuses_unmatched:
             LOG.debug("=====================================")