Default to stderr-based logging with a week's worth of daily logfiles.

diff -Naur postgresql-9.1rc1.orig/src/backend/utils/misc/postgresql.conf.sample postgresql-9.1rc1/src/backend/utils/misc/postgresql.conf.sample

--- postgresql-9.1rc1.orig/src/backend/utils/misc/postgresql.conf.sample	2011-08-18 17:23:13.000000000 -0400

+++ postgresql-9.1rc1/src/backend/utils/misc/postgresql.conf.sample	2011-08-18 18:39:39.697526799 -0400

@@ -279,7 +279,7 @@

 					# requires logging_collector to be on.

 # This is used when logging to stderr:

-#logging_collector = off		# Enable capturing of stderr and csvlog

+logging_collector = on			# Enable capturing of stderr and csvlog

 					# into log files. Required to be on for

 					# csvlogs.

 					# (change requires restart)

@@ -287,11 +287,11 @@

 # These are only used if logging_collector is on:

 #log_directory = 'pg_log'		# directory where log files are written,

 					# can be absolute or relative to PGDATA

-#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'	# log file name pattern,

+log_filename = 'postgresql-%a.log'	# log file name pattern,

 					# can include strftime() escapes

 #log_file_mode = 0600			# creation mode for log files,

 					# begin with 0 to use octal notation

-#log_truncate_on_rotation = off		# If on, an existing log file with the

+log_truncate_on_rotation = on		# If on, an existing log file with the

 					# same name as the new log file will be

 					# truncated rather than appended to.

 					# But such truncation only occurs on

@@ -299,9 +299,9 @@

 					# or size-driven rotation.  Default is

 					# off, meaning append to existing files

 					# in all cases.

-#log_rotation_age = 1d			# Automatic rotation of logfiles will

+log_rotation_age = 1d			# Automatic rotation of logfiles will

 					# happen after that time.  0 disables.

-#log_rotation_size = 10MB		# Automatic rotation of logfiles will

+log_rotation_size = 0			# Automatic rotation of logfiles will

 					# happen after that much log output.

 					# 0 disables.