The apache error logs on the keystone units are likely important:
[Mon Sep 03 00:27:26.613789 2018] [mpm_event:notice] [pid 60759:tid 140693993224064] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12 configured -- resuming normal operations [Mon Sep 03 00:27:26.613816 2018] [core:notice] [pid 60759:tid 140693993224064] AH00094: Command line: '/usr/sbin/apache2' [Mon Sep 03 00:34:39.198802 2018] [mpm_event:notice] [pid 60759:tid 140693993224064] AH00491: caught SIGTERM, shutting down [Mon Sep 03 00:34:40.424561 2018] [wsgi:warn] [pid 133226:tid 139642871338880] mod_wsgi: Compiled for Python/2.7.11. [Mon Sep 03 00:34:40.424618 2018] [wsgi:warn] [pid 133226:tid 139642871338880] mod_wsgi: Runtime using Python/2.7.12. [Mon Sep 03 00:34:40.429273 2018] [mpm_event:notice] [pid 133226:tid 139642871338880] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12 configured -- resuming normal operations [Mon Sep 03 00:34:40.429294 2018] [core:notice] [pid 133226:tid 139642871338880] AH00094: Command line: '/usr/sbin/apache2' [Mon Sep 03 00:38:55.677239 2018] [mpm_event:notice] [pid 133226:tid 139642871338880] AH00491: caught SIGTERM, shutting down [Mon Sep 03 00:38:56.828834 2018] [wsgi:warn] [pid 189383:tid 140551433283456] mod_wsgi: Compiled for Python/2.7.11. [Mon Sep 03 00:38:56.828898 2018] [wsgi:warn] [pid 189383:tid 140551433283456] mod_wsgi: Runtime using Python/2.7.12.
The apache error logs on the keystone units are likely important:
[Mon Sep 03 00:27:26.613789 2018] [mpm_event:notice] [pid 60759:tid 140693993224064] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12 configured -- resuming normal operations
[Mon Sep 03 00:27:26.613816 2018] [core:notice] [pid 60759:tid 140693993224064] AH00094: Command line: '/usr/sbin/apache2'
[Mon Sep 03 00:34:39.198802 2018] [mpm_event:notice] [pid 60759:tid 140693993224064] AH00491: caught SIGTERM, shutting down
[Mon Sep 03 00:34:40.424561 2018] [wsgi:warn] [pid 133226:tid 139642871338880] mod_wsgi: Compiled for Python/2.7.11.
[Mon Sep 03 00:34:40.424618 2018] [wsgi:warn] [pid 133226:tid 139642871338880] mod_wsgi: Runtime using Python/2.7.12.
[Mon Sep 03 00:34:40.429273 2018] [mpm_event:notice] [pid 133226:tid 139642871338880] AH00489: Apache/2.4.18 (Ubuntu) mod_wsgi/4.3.0 Python/2.7.12 configured -- resuming normal operations
[Mon Sep 03 00:34:40.429294 2018] [core:notice] [pid 133226:tid 139642871338880] AH00094: Command line: '/usr/sbin/apache2'
[Mon Sep 03 00:38:55.677239 2018] [mpm_event:notice] [pid 133226:tid 139642871338880] AH00491: caught SIGTERM, shutting down
[Mon Sep 03 00:38:56.828834 2018] [wsgi:warn] [pid 189383:tid 140551433283456] mod_wsgi: Compiled for Python/2.7.11.
[Mon Sep 03 00:38:56.828898 2018] [wsgi:warn] [pid 189383:tid 140551433283456] mod_wsgi: Runtime using Python/2.7.12.