2、重启或重新加载nginx都报这个错误。
[root@iZ62bem75i8Z vhosts]# /alidata/server/nginx-1.4.4/sbin/nginx -s reload
nginx: [alert] kill(1668, 1) failed (3: No such process)
3、按照下面的方法处理好了。
[root@iZ62bem75i8Z vhosts]# /alidata/server/nginx-1.4.4/sbin/nginx -c /alidata/server/nginx-1.4.4/conf/nginx.conf
[root@iZ62bem75i8Z vhosts]# /alidata/server/nginx-1.4.4/sbin/nginx -s reload
[root@iZ62bem75i8Z vhosts]# lsof -i:80
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
AliYunDun 1527 root 19u IPv4 16393 0t0 TCP 43.95.19.90:hermes->106.11.68.13:http (ESTABLISHED)
nginx 6440 root 18u IPv4 82298 0t0 TCP *:http (LISTEN)
nginx 6458 www 7u IPv4 81837 0t0 TCP 47.90.19.90:http->113.64.73.122:10899 (ESTABLISHED)
nginx 6458 www 8u IPv4 81838 0t0 TCP 47.90.19.90:http->113.64.73.122:10900 (ESTABLISHED)
nginx 6458 www 18u IPv4 82298 0t0 TCP *:http (LISTEN)
nginx 6459 www 18u IPv4 82298 0t0 TCP *:http (LISTEN)
nginx服务异常造成网站访问不了
原文地址：http://blog.51cto.com/net881004/2064571