Improved file logging example (bug 959610)

- Root logger w/ file handler will log WARNING, ERROR, CRITICAL by default

Change-Id: I36cd07cec85712640daa013563401a3bc52f290c

.gitignore

@@ -5,7 +5,7 @@ vendor
 .venv
 .tox
 keystone.egg-info/
-run_tests.log
+*.log
 .coverage
 covhtml
 pep8.txt

etc/keystone.conf

@@ -6,7 +6,7 @@ admin_token = ADMIN
 compute_port = 8774
 verbose = True
 debug = True
-#log_config = /etc/keystone/logging.conf
+#log_config = ./etc/logging.conf.sample
 
 # ================= Syslog Options ============================
 # Send logs to syslog (/dev/log) instead of to file specified

etc/logging.conf.sample

@@ -1,5 +1,5 @@
 [loggers]
-keys=root,api,registry,combined
+keys=root
 
 [formatters]
 keys=normal,normal_with_name,debug
@@ -8,23 +8,8 @@ keys=normal,normal_with_name,debug
 keys=production,file,devel
 
 [logger_root]
-level=NOTSET
-handlers=devel
-
-[logger_api]
-level=DEBUG
-handlers=devel
-qualname=glance-api
-
-[logger_registry]
-level=DEBUG
-handlers=devel
-qualname=glance-registry
-
-[logger_combined]
-level=DEBUG
-handlers=devel
-qualname=glance-combined
+level=WARNING
+handlers=file
 
 [handler_production]
 class=handlers.SysLogHandler
@@ -36,7 +21,7 @@ args=(('localhost', handlers.SYSLOG_UDP_PORT), handlers.SysLogHandler.LOG_USER)
 class=FileHandler
 level=DEBUG
 formatter=normal_with_name
-args=('glance.log', 'w')
+args=('keystone.log', 'a')
 
 [handler_devel]
 class=StreamHandler