cenos7 systemctl nginx

[root@iZ62sa8r6wcZ nginx-1.8.0]# ./sbin/nginx -t
nginx: the configuration file /usr/local/nginx-1.8.0/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx-1.8.0/conf/nginx.conf test is successful

配置文件没有错误

[root@iZ62sa8r6wcZ log]# ll /var/tmp/nginx/client/
total 0
文件夹存在

找不到错误原因了

mkdir错误了啊。你先删除/var/tmp/nginx/client 目录试试