commit 5edae54855b6b9af4283cef07e0b0d1a0f90cd3e
author Sean Dague <sean@dague.net> Tue Mar 21 20:50:24 2017 -0400
committer Sean Dague <sean@dague.net> Tue Mar 28 07:19:15 2017 -0400
tree 38a1c4516ffc6f472f455363fac5bd24c5b65425
parent fb73a8fc6fa8cdc826b10c47490bc47cd0e6776a

initial work to enable systemd service running

During the PTG there was a discussion that the screen developer
workflow wasn't nearly as useful as it once was. There were now too
many services to see them all on one screen, and one of the most
common service restart scenarios was not restarting one service, but a
bunch to get code to take effect.

This implements a 3rd way of running services instead of direct
forking via bash, or running under screen, which is running as systemd
units.

Logging is adjusted because it's redundant to log datetime in oslo.log
when journald has that.

Swift needed to have services launched by absolute path to work.

This is disabled by default, but with instructions on using it. The
long term intent is to make this the way to run devstack, which would
be the same between both the gate and local use.

Some changes were also needed to run_process to pass the run User
in. A hack around the keystone uwsgi launcher was done at the same
time to remove a run_process feature that only keystone uwsgi uses.

Change-Id: I836bf27c4cfdc449628aa7641fb96a5489d5d4e7

functions

diff --git a/functions b/functions
index 872f216..f6679fd 100644
--- a/functions
+++ b/functions
@@ -575,7 +575,9 @@
 function setup_logging {
     local conf_file=$1
     local other_cond=${2:-"False"}
-    if [ "$LOG_COLOR" == "True" ] && [ "$SYSLOG" == "False" ] && [ "$other_cond" == "False" ]; then
+    if [[ "$USE_SYSTEMD" == "True" ]]; then
+        setup_systemd_logging $conf_file
+    elif [ "$LOG_COLOR" == "True" ] && [ "$SYSLOG" == "False" ] && [ "$other_cond" == "False" ]; then
         setup_colorized_logging $conf_file
     else
         setup_standard_logging_identity $conf_file
@@ -601,6 +603,17 @@
     iniset $conf_file $conf_section logging_exception_prefix "%(color)s%(asctime)s.%(msecs)03d TRACE %(name)s %(instance)s"
 }
 
+function setup_systemd_logging {
+    local conf_file=$1
+    local conf_section="DEFAULT"
+    local project_var="project_name"
+    local user_var="user_name"
+    iniset $conf_file $conf_section logging_context_format_string "%(levelname)s %(name)s [%(request_id)s %("$project_var")s %("$user_var")s] %(instance)s%(message)s"
+    iniset $conf_file $conf_section logging_default_format_string "%(levelname)s %(name)s [-] %(instance)s%(color)s%(message)s"
+    iniset $conf_file $conf_section logging_debug_format_suffix "from (pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d"
+    iniset $conf_file $conf_section logging_exception_prefix "ERROR %(name)s %(instance)s"
+}
+
 function setup_standard_logging_identity {
     local conf_file=$1
     iniset $conf_file DEFAULT logging_user_identity_format "%(project_name)s %(user_name)s"