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设置位于nginx.conf:
log_format main ‘$server_name $remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" "$http_x_forwarded_for" $upstream_addr $request_time $upstream_response_time‘;
access_log /logs/nginx/access.log main;
error_log /logs/nginx/error.log;
设置可以放在http{}中也可以放在server{}中,后者会针对每个server做不同配置.
其中最应该关注的除了status,还有request_time 和upstream_response_time有一些细微的差别
request_time官网描述：request processing time in seconds with a milliseconds resolution; time elapsed between the first bytes were read from the client and the log write after the last bytes were sent to the client 。
指的就是从接受用户请求的第一个字节到发送完响应数据的时间，即包括接收请求数据时间、程序响应时间、输出
而真正程序的响应时间应该用$upstream_response_time。
日志自动切分:利用logrotate,首先安装Logrotate,
然后在/etc/logrotate.d 中加入一个文件(注意如果是nginx通过apt-get安装的话该步骤是自动的,所有通过apt-get安装的程序日志都会自动生成logrotate 配置)
配置类似于
logs/nginx/*.log {
daily
missingok
rotate 52
compress
delaycompress
notifempty
create 0640 www-data adm
sharedscripts
prerotate
if [ -d /etc/logrotate.d/httpd-prerotate ]; then \
run-parts /etc/logrotate.d/httpd-prerotate; \
fi; \
endscript
postrotate
[ ! -f /var/run/nginx.pid ] || kill -USR1 `cat /var/run/nginx.pid`
endscript
}
该配置会按照天来切分.当然最好还要用
/usr/bin/find /logs/nginx -mtime +3 -name "*.log.*" -exec /bin/rm -r {} \;
配置到crontab中定期执行来清理多余的切分文件,否则容易磁盘溢出.
nginx 日志相关配置总结
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原文地址：http://www.cnblogs.com/violinn/p/4940618.html
