「四」命令行、热部署、日志切割

命令行

• 格式:nginx 参数 [动作]
• 帮助:-? -h
• 使用指定的配置文件:-c
• 指定配置指令:-g
• 指定运行目录:-p
• 发送信号:-s
  指令:
  stop:停止服务
  quit:优雅停止服务
  reload:重载配置文件
  reopen:重新开始记录日志文件
• 测试配置文件是否有语法错误:-t -T
• 打印nginx的版本信息、编译信息等:-v -V

root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -s reload
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -?
nginx version: nginx/1.14.2
Usage: nginx [-?hvVtTq] [-s signal] [-c filename] [-p prefix] [-g directives]

Options:
  -?,-h         : this help
  -v            : show version and exit
  -V            : show version and configure options then exit
  -t            : test configuration and exit
  -T            : test configuration, dump it and exit
  -q            : suppress non-error messages during configuration testing
  -s signal     : send signal to a master process: stop, quit, reopen, reload
  -p prefix     : set prefix path (default: /home/ubuntu/nginx/)
  -c filename   : set configuration file (default: conf/nginx.conf)
  -g directives : set global directives out of configuration file

root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -v
nginx version: nginx/1.14.2
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -t
nginx: the configuration file /home/ubuntu/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /home/ubuntu/nginx/conf/nginx.conf test is successful

#读取-c参数后指定的nginx.conf配置文件来启动Nginx
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -c /home/ubuntu/nginx/conf/nginx.conf
#使用-p参数指定Nginx的安装目录
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ./nginx -p /home/ubuntu/nginx

热部署

root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ps -ef |grep nginx
root     26122     1  0 16:57 ?        00:00:00 nginx: master process ./nginx
nobody   26409 26122  0 16:58 ?        00:00:00 nginx: worker process
root     27449 26146  0 17:03 pts/1    00:00:00 grep --color=auto nginx

#替换nginx二进制文件
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# cp nginx  nginx.old

#平滑部署
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# kill -USR2 26122

root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ps -ef |grep nginx
root     26122     1  0 16:57 ?        00:00:00 nginx: master process ./nginx
nobody   26409 26122  0 16:58 ?        00:00:00 nginx: worker process
root     28580 26122  0 17:08 ?        00:00:00 nginx: master process ./nginx
nobody   28581 28580  0 17:08 ?        00:00:00 nginx: worker process
root     28607 26146  0 17:08 pts/1    00:00:00 grep --color=auto nginx

#kill老master进程
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# kill -WINCH 26122
root@VM-4-4-ubuntu:/home/ubuntu/nginx/sbin# ps -ef |grep nginx
root     26122     1  0 16:57 ?        00:00:00 nginx: master process ./nginx
root     28580 26122  0 17:08 ?        00:00:00 nginx: master process ./nginx
nobody   28581 28580  0 17:08 ?        00:00:00 nginx: worker process
root     28750 26146  0 17:09 pts/1    00:00:00 grep --color=auto nginx

切割日志文件

root@VM-4-4-ubuntu:/home/ubuntu/nginx/logs# ls -l
total 12
-rw-r--r-- 1 ubuntu ubuntu    0 May  8 16:57 access.log
-rw-r--r-- 1 ubuntu ubuntu 1610 May  8 17:08 error.log  #1610字节内容
-rw-r--r-- 1 root   root      6 May  8 17:08 nginx.pid
-rw-r--r-- 1 root   root      6 May  8 16:57 nginx.pid.oldbin

root@VM-4-4-ubuntu:/home/ubuntu/nginx/logs# mv error.log  /home/ubuntu/error.log.bak
root@VM-4-4-ubuntu:/home/ubuntu/nginx/logs# ../sbin/nginx -s reopen #重新生成error日志文件
root@VM-4-4-ubuntu:/home/ubuntu/nginx/logs# ll
total 20
drwxrwxr-x  2 ubuntu ubuntu 4096 May  8 17:15 ./
drwxrwxr-x 11 ubuntu ubuntu 4096 May  8 16:57 ../
-rw-r--r--  1 nobody ubuntu    0 May  8 16:57 access.log
-rw-r--r--  1 nobody root     61 May  8 17:15 error.log     #空文件
-rw-r--r--  1 root   root      6 May  8 17:08 nginx.pid
-rw-r--r--  1 root   root      6 May  8 16:57 nginx.pid.oldbin
root@VM-4-4-ubuntu:/home/ubuntu/nginx/logs# 

具体资料:https://blog.csdn.net/weixin_46389787/article/details/116941097