[linux] Nginx logrotate 設置

設置完 Nginx 的 access log 後，
接著使用 logrotate 設置 log 的壓縮

在 vim /etc/logrotate.d/nginx

  /data/logs/*log {

daily rotate 10 missingok notifempty compress sharedscripts postrotate /bin/kill -USR1 $(cat /usr/local/nginx/logs/nginx.pid 2>/dev/null) 2>/dev/null || : endscript }

daily 表示每天做 logrotate

rotate 10 只保留 rotate 10 份

missingok 當 log file 不存在時，還是繼續執行。

notifempty 當 log 為空時，不 rotate
compress 壓縮 使用gzip
sharedscripts 表示當所有log都rotate 完，以後再執行這個 script。

postrotate 中 kill -USR1 的目的是使重新 reopen nginx log file 。

The master process can handle the following signals:

TERM, INT	Quick shutdown
QUIT	Graceful shutdown
KILL	Halts a stubborn process
HUP	Configuration reload Start the new worker processes with a new configuration Gracefully shutdown the old worker processes
USR1	Reopen the log files
USR2	Upgrade Executable on the fly
WINCH	Gracefully shutdown the worker processes

CommandLine | NGINX https://www.nginx.com/resources/wiki/start/topics/tutorials/commandline/

kill -USR1 参数详解 - 阅心笔记 https://www.52os.net/articles/kill-USR1-meanning.html

如果，想要馬上執行看看呢
logrotate -f /etc/logrotate.d/ngnix

然後就可以
cat cat /var/lib/logrotate.status | grep "/data/logs/" 看看有沒有執行的紀錄。