Postgresql的日志配置教程详解

# This is used when logging to stderr:

logging_collector =on# Enable capturing of stderr and csvlog

# into log files. Required to be on for

# csvlogs.

# (change requires restart)

# These are only used if logging_collector is on:

#配置日志目录，默认为pg_log即可

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

# can be absolute or relative to PGDATA

#pg日志文件名及其扩展名，默认即可

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

# can include strftime() escapes

#pg日志文件的权限，默认即可

log_file_mode = 0600 # creation mode for log files,

#开启日志滚动阶段，这里需要设置为on

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

#日志保留天数，这里看实际环境，如果是测试建议1d，如果是生产环境建议7d

log_rotation_age = 1d # Automatic rotation of logfiles will

#单个日志大小，默认100MB即可，比较标准的配置

#发送给客户端的消息级别，建议warning即可，日志等级越低，打印的内容越多，性能上越有损耗

client_min_messages = warning # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# log

# notice

# warning

# error

#写到数据库日志文件中的消息的级别，建议warning即可，日志等级越低，打印的内容越多，性能上越有损耗

log_min_messages = warning # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# info

# notice

# warning

# error

# log

# fatal

# panic

#是否记录导致数据库出现错误的SQL语句，建议warning即可，日志等级越低，打印的内容越多，性能上越有损耗

log_min_error_statement = error # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# info

# notice

# warning

# error

# log

# fatal

# panic (effectively off)

#log_statement_stats为on则会开启log_parser_stats，log_planner_stats，log_executor_stats这三个选项，生产环境不建议开启，建议测试环境开启，用于定位问题。

#log_parser_stats = off

#log_planner_stats = off

#log_executor_stats = off

#log_statement_stats = off

#执行sql时间为2s以上的sql都会被记录下来

log_min_duration_statement = 2s