nginx: [alert] kill(1726, 1) failed

在启动nginx的时候出现如下命令：
检查语法正常
[root@mytest nginx]# /application/tools/nginx/sbin/nginx -t
nginx: the configuration file /application/tools/nginx1.6.2/conf/nginx.conf syntax is ok
nginx: configuration file /application/tools/nginx1.6.2/conf/nginx.conf test is successful
启动nginx的时候出现：
[root@mytest nginx]# /application/tools/nginx/sbin/nginx -s reload
nginx: [alert] kill(1726, 1) failed (3: No such process)
提示未找到nginx相关进程
解决办法:
[root@mytest nginx]# /application/tools/nginx/sbin/nginx 重新启动nginx

[root@mytest nginx]# /application/tools/nginx/sbin/nginx -s reload 优雅重启nginx服务