问题描述：

I setup wordpress with the help of this tutorial...

how to install wordpress with LEMP on ubuntu 18.04when I tried to install theme or plugins the error message shown like this

Installation failed: Could not create directory

I tried also to give permission with this:

sudo chown -R www-data:www-data /var/www/domain_name.com/html/wp-content/plugins
sudo find /var/www/domain_name/html/ -type d -exec chmod 7555 {} \\;
sudo find /var/www/c-linkons.com/html/ -type f -exec chmod 644 {} \\;

I checked by this

ps aux|grep nginx|grep -v grep
826  0.0  0.9 142688  9184 ?        Ss   Sep03   0:00 nginx: master process /usr/sbin/nginx -g daemon on; master_process on;
www-data 13818  0.0  0.8 144988  8748 ?        S    Sep04   0:00 nginx: worker process

and with this

ps -ef |grep php
root       759     1  0 Sep03 ?        00:00:11 php-fpm: master process    (/etc/php/7.2/fpm/php-fpm.conf)
www-data   834   759  0 Sep03 ?        00:00:03 php-fpm: pool www
www-data   835   759  0 Sep03 ?        00:00:05 php-fpm: pool www
root      8843  8831  0 15:58 pts/0    00:00:00 grep --color=auto php
www-data 19731   759  0 Sep04 ?        00:00:00 php-fpm: pool www

图片转代码服务由CSDN问答提供

感谢您的意见，我们尽快改进~

功能建议

我在本教程的帮助下设置了wordpress ...

如何在ubuntu 18.04上安装带有LEMP的wordpress 当我尝试安装主题或插件时，显示如下错误消息</ p>

 安装失败：无法创建目录
</ code> </ pre> 
< 我也尝试过这样的许可：</ p> 
  sudo chown -R www-data：www-data /var/www/domain_name.com/html/wp-content  / plugins 
sudo find / var / www / domain_name / html / -type d -exec chmod 7555 {} \\; 
sudo find /var/www/c-linkons.com/html/ -type f -exec chmod 644 {}  \\; 
</ code> </ pre> 
我通过此检查</ p> 
  ps aux | grep nginx | grep -v grep 
\\  n826 0.0 0.9 142688 9184？  Ss Sep03 0:00 nginx：master process / usr / sbin / nginx -g daemon on;  master_process on; 
www-data 13818 0.0 0.8 144988 8748？  S Sep04 0:00 nginx：worker process 
</ code> </ pre> 
并使用此</ p> 
  ps -ef | grep php \\  n 
root 759 1 0 Sep03？  00:00:11 php-fpm：主进程（/etc/php/7.2/fpm/php-fpm.conf)
nn-data 834 759 0 Sep03？  00:00:03 php-fpm：pool www 
-www 835 759 0 Sep03？  00:00:05 php-fpm：pool www 
root 8843 8831 0 15:58 pts / 0 00:00:00 grep --color = auto php 
-www 19731 759 0 Sep04？  00:00:00 php-fpm：pool www 
</ code> </ pre> 
</ div> 
网友观点：
changing ownership with this it works like charm
sudo chown -R www-data:www-data /var/www/domain_name.com/html/
sudo systemctl reload nginx