????logrotate????
????????Linux????????????????????????????????????????????????з?????????????????????????????л????????????????????????????????????????????????????и?????д?????????????????????????????????鵵???????
????????????????logrotate????? ??logrotate????????????????????????????????н???????????????????????????????????磬?????????logrotate????/var/log/foo???????30????????????????6???μ?????????????logrotate????????????????????????κν??????????????
????logrotate???????λ??
????Linux???????logrotate?????????????????????
????/etc/logrotate.conf
????/etc/logrotate.d/
????logrotate.conf ????????????????logrotate.d ????????????????????????????????????/etc/logrotate.conf????С?
??????????? /etc/logrotate.d/ ??????????????趨?Щ?????????/etc/logrotate.conf?????????趨???????????
??????????????Logrotate????????????/etc/logrotate.conf??
??????????/etc/logrotate.d???????????????????????????????Logrotate???????
??????????????
????Logrotate?????CRON?????е?????????/etc/cron.daily/logrotate????????????????????
????logrotate?????????????cron???????????cron.daily???? /etc/cron.daily/logrotate
????/etc/?????滹??cron.weekly/?? cron.hourly/?? cron.monthly/ ???????????????????
[/etc]$ cat /etc/cron.daily/logrotate
#!/bin/sh
# Clean non existent log file entries from status file
cd /var/lib/logrotate
test -e status || touch status
head -1 status > status.clean
sed 's/"//g' status | while read logfile date
do
[ -e "$logfile" ] && echo ""$logfile" $date"
done >> status.clean
mv status.clean status
test -x /usr/sbin/logrotate || exit 0
/usr/sbin/logrotate /etc/logrotate.conf
???????????????????????????
????/usr/sbin/logrotate /etc/logrotate.conf
????????????????????????cron.daily/logrotate ?????crontab??????????????ú???????cron.xxly
??????????
[/etc]$ vim /etc/crontab
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# m h dom mon dow user    command
17 *    * * *    root    cd / && run-parts --report /etc/cron.hourly
25 6    * * *    root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6    * * 7    root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6    1 * *    root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
?????????????????????
????/etc/cron.daily/ ??????????????6??25 ???
????/etc/cron.weekly/ ???????????????? 6??47 ???
????/etc/cron.monthly/ ??????????????1?? 6??52 ???
????????????cron???????????????????????и???????????-f??????
????????????????????Debug??????????￡?-d????????????????????
????# /usr/sbin/logrotate -f /etc/logrotate.d/nginx  // δ????????δ???и???????????и?
????# /usr/sbin/logrotate -d -f /etc/logrotate.d/nginx // ????и?debug???
???????????????????logrotate????????????и??????
????logrotate???e???
????nginx ????????и?????
/data/log/nginx/*.log /data/log/nginx/*/*.log { # ???????????????????и?
weekly # ????и?
missingok     # ????????????κδ??????????????“?????????”???????
rotate 6      # ???? 6 ??????
compress     # ???
delaycompress    # delaycompress ?? compress ????????????????????????????????????
notifempty     # ???????????????????
create 0644 www-data ymserver     # mode owner group ??????????????????????????μ???????
sharedscripts # ????????
prerotate # ??logrotate??????????е?????????????????????????????????????
if [ -d /etc/logrotate.d/httpd-prerotate ]; then
run-parts /etc/logrotate.d/httpd-prerotate;
fi
endscript
postrotate  # ??logrotate???????????е??????????????? (kill -HUP) ??????????????????
[ -s /run/nginx.pid ] && kill -USR1 `cat /run/nginx.pid`
endscript
su root ymserver # ????????л?????????/?????????У??????root????????????user/group ???????????????? create ????????????? ??????????
}
??????????????????0??????и???????????????????logrotate???????????????д????/etc/cron.daily/?????棬?????????????????????????????????/etc/crontab???漲?????6??25???????и????????????????????????
/data/log/owan_web/chn_download_stat/chn_app_rec.log {
copytruncate
# weekly ????? ???????/etc/logrorate.conf?????????????weekly
missingok
rotate 10
compress
delaycompress
size=1000M # ??С????size??????
notifempty
create 664 www-data ymserver
su root
dateext       //?????????????????и???????????????????????β????xxx.log-20131216???????????????и???????????????????????? xxx.log-1??????
compress      //??????gzip????????????????????xxx.log-20131216.gz ?????????????????????
}