Nginx重启出现Address already in use

启动nginx服务的时候，无法开启，发现提示错误信息，问题描述是地址已被使用，可能nginx服务卡死了，导致端口占用，出现此错误。

下面错误信息：

nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)

查看端口：

[root@localhost letsencrypt]# netstat -ntpl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      44882/nginx: worker 
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1120/sshd           
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2245/master         
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      44882/nginx: worker 
tcp        0      0 103.73.162.39:8989      0.0.0.0:*               LISTEN      1757/ss-server      
tcp        0      0 127.0.0.1:2368          0.0.0.0:*               LISTEN      2411/node /web/webn 
tcp6       0      0 :::3306                 :::*                    LISTEN      2322/mysqld         
tcp6       0      0 :::22                   :::*                    LISTEN      1120/sshd  

杀掉进程：

kill 44882

重启nginx服务：

nginx -s reload

查看Nginx进程：

ps -ef|grep nginx