# 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:

#配置日志目錄，默認(rèn)為pg_log即可

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

# can be absolute or relative to PGDATA

#pg日志文件名及其擴(kuò)展名，默認(rèn)即可

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

# can include strftime() escapes

#pg日志文件的權(quán)限，默認(rèn)即可

log_file_mode = 0600 # creation mode for log files,

#開(kāi)啟日志滾動(dòng)階段，這里需要設(shè)置為on

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

#日志保留天數(shù)，這里看實(shí)際環(huán)境，如果是測(cè)試建議1d，如果是生產(chǎn)環(huán)境建議7d

log_rotation_age = 1d # Automatic rotation of logfiles will

#單個(gè)日志大小，默認(rèn)100MB即可，比較標(biāo)準(zhǔn)的配置

#發(fā)送給客戶端的消息級(jí)別，建議warning即可，日志等級(jí)越低，打印的內(nèi)容越多，性能上越有損耗
client_min_messages = warning # values in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# log
# notice
# warning
# error
#寫到數(shù)據(jù)庫(kù)日志文件中的消息的級(jí)別，建議warning即可，日志等級(jí)越低，打印的內(nèi)容越多，性能上越有損耗
log_min_messages = warning # values in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# info
# notice
# warning
# error
# log
# fatal
# panic
#是否記錄導(dǎo)致數(shù)據(jù)庫(kù)出現(xiàn)錯(cuò)誤的SQL語(yǔ)句，建議warning即可，日志等級(jí)越低，打印的內(nèi)容越多，性能上越有損耗
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為on則會(huì)開(kāi)啟log_parser_stats，log_planner_stats，log_executor_stats這三個(gè)選項(xiàng)，生產(chǎn)環(huán)境不建議開(kāi)啟，建議測(cè)試環(huán)境開(kāi)啟，用于定位問(wèn)題。
#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off 

#執(zhí)行sql時(shí)間為2s以上的sql都會(huì)被記錄下來(lái)
log_min_duration_statement = 2s