解决错误 Stopping nginx: nginx: [error] invalid PID number
[i=s] 本帖最后由 yux82 于 2015-4-21 09:22 编辑 [/i]前几天忘记什么原因kill 掉80端口nginx 导致出现这个错误，新建站点变成了 404 Not Found nginx/1.2.9 重启nginx后错误如下[code]Stopping nginx: nginx: [error] invalid PID number "" in "/www/wdlinux/nginx/logs/nginx.pid"
[ OK ]
Starting nginx: nginx: [emerg] bind() to 0.0.0.0:80 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 0.0.0.0:80 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 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] still could not bind()
[FAILED][/code]查了点资料，有文章上说可能是nginx.pid丢失了，于是 cat /www/wdlinux/nginx/logs/nginx.pid，发现是空的，无内容，其实nginx.pid 中的内容就是进程id
然后 netstat -ntpl
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3673/nginx
看到nginx 进程id 是3673
vi /www/wdlinux/nginx/logs/nginx.pid 编辑 3673 保存退出
重启 service nginxd restart 成功
本人也是个linux 初学的小菜鸟，以上方法有什么不对的地方请大家指正，谢谢
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