Nginx日志按日分割方法

本文使用logrotate工具对Nginx日志进行按日的自动切割，操作系统为Centos7.6，步骤如下：

1.编写针对Nginx的logrotate脚本如下（保存在/etc/logrotate.d/ )

/usr/local/nginx/logs/*.log {
    daily 
    missingok 
    rotate 60 
    dateext 
    notifempty 
    create 0640 root root 
    sharedscripts
    prerotate
        if [ -d /etc/logrotate.d/nginx]; then
            run-parts /etc/logrotate.d/nginx;
        fi
    endscript
    postrotate
        if [ -f /usr/local/nginx/logs/nginx.pid ]; then
            kill -USR1 `cat /usr/local/nginx/logs/nginx.pid`
        fi
    endscript
}

需要注意如果脚本在windows中编辑，需要转换为unix格式。编写完成后可使用如下命令手工验证是否生效：

logrotate -vf /etc/logrotate.d/nginx

2. 配置crontab定时任务（/etc/crontab），每日0点0分切割日志

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root

# For details see man 4 crontabs

# Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  * user-name  command to be executed
  *  *  *  *  *   root   python /usr/sbin/qemu-ga_check.py
  0  0  *  *  *   root   logrotate -vf /etc/logrotate.d/nginx

重启cron服务

service cron restart

配置完成！