2.nginx 信號控制
2.1 立即關閉進程
命令：kill -INT 主進程號
測試：
[root@bogon nginx]# ps aux|grep nginx
root 8499 0.0 0.0 3636 552 ? Ss 04:41 0:00 nginx: master process ./sbin/nginx
nobody 8500 0.0 0.0 3848 924 ? S 04:41 0:00 nginx: worker process
root 9009 0.0 0.0 4356 724 pts/0 S+ 04:50 0:00 grep nginx
[root@bogon nginx]# kill -INT 8499
[root@bogon nginx]# ps aux|grep nginx
root 9031 0.0 0.0 4356 724 pts/0 S+ 04:55 0:00 grep nginx
2.2 請求結束後再關閉進程
命令:kill -quit 主進程號
測試：
[root@bogon nginx]# ps aux|grep nginx
root 9034 0.0 0.0 3636 552 ? Ss 04:55 0:00 nginx: master process ./sbin/nginx
nobody 9035 0.0 0.0 3848 924 ? S 04:55 0:00 nginx: worker process
root 9038 0.0 0.0 4356 728 pts/0 S+ 04:56 0:00 grep nginx
[root@bogon nginx]# kill -quit 9034
[root@bogon nginx]# ps aux|grep nginx
root 9075 0.0 0.0 4356 724 pts/0 S+ 05:01 0:00 grep nginx
2.3 改變配置文件，平滑的重讀新的配置文件
命令：kill -hup 主進程號
測試：
[root@bogon nginx]# ps aux|grep nginx
root 9079 0.0 0.0 3636 548 ? Ss 05:01 0:00 nginx: master process ./sbin/nginx
nobody 9080 0.0 0.0 3848 920 ? S 05:01 0:00 nginx: worker process
root 9083 0.0 0.0 4356 728 pts/0 S+ 05:01 0:00 grep nginx
[root@bogon nginx]# kill -hup 9079
[root@bogon nginx]# ps aux|grep nginx
root 9079 0.0 0.1 3780 1156 ? Ss 05:01 0:00 nginx: master process ./sbin/nginx
nobody 9085 0.0 0.0 3928 1012 ? S 05:02 0:00 nginx: worker process
root 9088 0.0 0.0 4356 724 pts/0 S+ 05:02 0:00 grep nginx
2.4 重新啓動，並且平滑重新讀新的配置文件，不會關閉nginx
命令:./sbin/nginx -s reload
測試：
[root@bogon nginx]# ps aux|grep nginx
root 2276 0.0 0.0 3636 556 ? Ss 01:41 0:00 nginx: master process ./sbin/nginx
nobody 2277 0.0 0.1 3848 1204 ? S 01:41 0:00 nginx: worker process
root 2608 0.0 0.0 4356 752 pts/0 S+ 02:26 0:00 grep nginx
[root@bogon nginx]# ./sbin/nginx -s reload
[root@bogon nginx]# ps aux|grep nginx
root 2276 0.0 0.1 3780 1164 ? Ss 01:41 0:00 nginx: master process ./sbin/nginx
nobody 2611 0.0 0.0 3928 1020 ? S 02:26 0:00 nginx: worker process
root 2613 0.0 0.0 4356 752 pts/0 S+ 02:26 0:00 grep nginx
2.5 關閉nginx
命令：./sbin/nginx -s stop
測試：
[root@bogon nginx]# ps aux|grep nginx
root 2276 0.0 0.1 3780 1164 ? Ss 01:41 0:00 nginx: master process ./sbin/nginx
nobody 2611 0.0 0.0 3928 1020 ? S 02:26 0:00 nginx: worker process
root 2613 0.0 0.0 4356 752 pts/0 S+ 02:26 0:00 grep nginx
[root@bogon nginx]# ./sbin/nginx -s stop
[root@bogon nginx]# ps aux|grep nginx
root 2626 0.0 0.0 4356 728 pts/0 S+ 02:29 0:00 grep nginx
2.6 重讀配置文件
命令：./sbin/nginx -s reopen
測試：
[root@bogon nginx]# ps aux|grep nginx
root 2669 0.0 0.0 4356 748 pts/0 S+ 02:32 0:00 grep nginx
[root@bogon nginx]# ./sbin/nginx
[root@bogon nginx]# ps aux|grep nginx
root 2671 0.0 0.0 3636 552 ? Ss 02:32 0:00 nginx: master process ./sbin/nginx
nobody 2672 0.0 0.0 3848 924 ? S 02:32 0:00 nginx: worker process
root 2675 0.0 0.0 4356 748 pts/0 S+ 02:33 0:00 grep nginx
[root@bogon nginx]# ./sbin/nginx -s reopen
[root@bogon nginx]# ps aux|grep nginx
root 2671 0.0 0.0 3636 604 ? Ss 02:32 0:00 nginx: master process ./sbin/nginx
nobody 2672 0.0 0.0 3848 988 ? S 02:32 0:00 nginx: worker process
root 2679 0.0 0.0 4356 724 pts/0 S+ 02:33 0:00 grep nginx
2.7 進程結束後退出
命令：./sbin/nginx -s quit
測試：
[root@bogon nginx]# ps aux|grep nginx
root 2671 0.0 0.0 3636 604 ? Ss 02:32 0:00 nginx: master process ./sbin/nginx
nobody 2672 0.0 0.0 3848 988 ? S 02:32 0:00 nginx: worker process
root 2679 0.0 0.0 4356 724 pts/0 S+ 02:33 0:00 grep nginx
[root@bogon nginx]# ./sbin/nginx -s quit
[root@bogon nginx]# ps aux|grep nginx
root 2758 0.0 0.0 4356 724 pts/0 S+ 02:47 0:00 grep nginx
