TERM, INT 快速關閉；

QUIT 從容關閉；

HUP 平滑重啟，重新載入配置檔案；

USR1 重新開啟日誌檔案，在切割日誌時用途較大；

USR2 平滑升級可執行程式；

WINCH 從容關閉工作程序；

【荔枝】

[[email protected] nginx]# nginx -c conf/nginx.conf
[[email protected] nginx]# 
[[email protected] nginx]# ps -ef | grep nginx
root      2138     1  0 06:30 ?        00:00:00 nginx: master process nginx -c conf/nginx.conf
nobody    2139  2138  0 06:30 ?        00:00:00 nginx: worker process   
nobody    2140  2138  0 06:30 ?        00:00:00 nginx: worker process   
nobody    2141  2138  0 06:30 ?        00:00:00 nginx: worker process   
root      2143  2083  1 06:30 pts/0    00:00:00 grep nginx
[
 
[email protected] nginx]# 
[[email protected] nginx]# ps -ef | grep nginx
root      2138     1  0 06:30 ?        00:00:00 nginx: master process nginx -c conf/nginx.conf
nobody    2139  2138  0 06:30 ?        00:00:00 nginx: worker process   
nobody    2140  2138  0 06:30 ?        00:00:00 nginx: worker process   
nobody    2141  2138  0 06:30 ?        00:00:00 nginx: worker process   
root      2147  2083  3 06:32 pts/0    00:00:00 grep nginx
[
 
[email protected] nginx]# 
[[email protected] nginx]# kill -QUIT 2138
[[email protected] nginx]# 
[[email protected] nginx]# ps -ef | grep nginx
root      2149  2083  2 06:32 pts/0    00:00:00 grep nginx

【nginx.conf 檔案如下】： 第2行的 woker_processes 3; 表示nginx主程序 帶有3個工作程序；

# this config is from 3-6
worker_processes 3; 
events {
	worker_connections 1024;  
}
http
{
    # first virtual host 第一個虛擬主機
    server
    {
        # ip and port monitored 監聽的ip和埠
        listen          192.168.186.100:80;
        # host name 主機名稱
        server_name    192.168.186.100;
        # the dir access_log saved 訪問日誌檔案存放路徑
        access_log      logs/server1.access.log combined;
        location /
        {
	    # default index file, priority reduction from left to right
		# 預設首頁檔案，順序從左到右，
            index index.html index.htm;
            # the dir html file saved， html網頁檔案存放目錄
            root  /data0/htdocs/server1;
        }
    }
    # second virtual host
    server
    {
        listen          192.168.186.101:80;
        server_name    192.168.186.101;
        access_log      logs/server2.access.log combined;
       location /
        {
            index index.html index.htm;
            root  /data0/htdocs/server2;
        }
    }
    # third virtual host
    server 
    {
        listen          192.168.186.102:80;
        server_name    192.168.186.102;
        access_log      logs/server3.access.log combined;
        location /
        {
            index index.html index.htm;
            root  /data0/htdocs/server3.com;
        }
    }
}