[root@localhost sbin]# ls 1.sh nginx nginx.0 nginx.2 nginx.3.bak nginx.lua nginx.old

测试1: cat 1.sh yes|cp -r nginx.0 nginx #service nginx start /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf [ -f nginx.old ] && rm -rf nginx.old mv nginx nginx.old yes|cp -r nginx.2 nginx sleep 60 kill -USR2 cat /usr/local/nginx/logs/nginx.pid kill -WINCH cat /usr/local/nginx/logs/nginx.pid.oldbin kill -QUIT cat /usr/local/nginx/logs/nginx.pid.oldbin

最后剩下 [root@localhost nginx]# ps -ef|grep nginx root 30530 1 0 16:08 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf root 30589 30530 0 16:09 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf nginx 30590 30589 0 16:09 ? 00:00:00 nginx: worker process root 30619 30360 0 16:10 pts/6 00:00:00 grep --color=auto nginx [root@localhost nginx]# kill -QUIT cat /usr/local/nginx/logs/nginx.pid.oldbin [root@localhost nginx]# ps -ef|grep nginx root 30589 1 0 16:09 ? 00:00:00 nginx: master process /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf nginx 30590 30589 0 16:09 ? 00:00:00 nginx: worker process root 30683 30360 0 16:11 pts/6 00:00:00 grep --color=auto nginx

成功

测试2: [root@localhost system]# cat nginx.service [Unit] Description=nginx After=network.target

[Service] Type=forking ExecStartPre=/usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf ExecReload=/usr/local/nginx/sbin/nginx -s reload ExecStop=/usr/local/nginx/sbin/nginx -s quit PrivateTmp=true

[Install] WantedBy=multi-user.target

用systemd forking 方式生成的nginx，使用kill -QUIT cat /usr/local/nginx/logs/nginx.pid.oldbin命令， 进程会全部退出

ab -n1000000 -c10 http://domain.com/

总结，还需要去看下forking是怎么控制进程的?

''' strace kill -USR2 cat /usr/local/nginx/logs/nginx.pid sleep 1 test -f /usr/local/nginx/logs/nginx.pid.oldbin

kill -WINCH cat /usr/local/nginx/logs/nginx.pid.oldbin

yes|cp -r nginx.0 nginx service nginx start [ -f nginx.old ] && rm -rf nginx.old mv nginx nginx.old yes|cp -r nginx.2 nginx sleep 1 kill -USR2 cat /usr/local/nginx/logs/nginx.pid

'''