問題

nginx無法決議.php檔案，頁面空白，并且替換為html靜態檔案后可以決議;
日志報錯：nginx FastCGI sent in stderr: “Primary script unknown”

環境介紹

• Linux服務器：Centos7;
• 提前yum安裝有apache + php-fpm (關鍵，php-fpm需要指定用戶和組)
• yum 安裝nginx

Nginx配置決議php

yum安裝的nginx，組態檔在/etc/nginx/目錄下

[root@centos7php nginx]# pwd
/etc/nginx
[root@centos7php nginx]# ll
total 60
drwxr-xr-x 2 root root    6 Sep 15  2017 conf.d
-rw-r--r-- 1 root root 1077 Sep 15  2017 fastcgi.conf
-rw-r--r-- 1 root root 1077 Sep 15  2017 fastcgi.conf.default
-rw-r--r-- 1 root root 1007 Sep 15  2017 fastcgi_params
-rw-r--r-- 1 root root 1007 Sep 15  2017 fastcgi_params.default
-rw-r--r-- 1 root root 2837 Sep 15  2017 koi-utf
-rw-r--r-- 1 root root 2223 Sep 15  2017 koi-win
-rw-r--r-- 1 root root 3957 Sep 15  2017 mime.types
-rw-r--r-- 1 root root 3957 Sep 15  2017 mime.types.default
-rw-r--r-- 1 root root 3509 Sep 12 12:29 nginx.conf
-rw-r--r-- 1 root root 2656 Sep 15  2017 nginx.conf.default
-rw-r--r-- 1 root root  636 Sep 15  2017 scgi_params
-rw-r--r-- 1 root root  636 Sep 15  2017 scgi_params.default
-rw-r--r-- 1 root root  664 Sep 15  2017 uwsgi_params
-rw-r--r-- 1 root root  664 Sep 15  2017 uwsgi_params.default
-rw-r--r-- 1 root root 3610 Sep 15  2017 win-utf
[root@centos7php nginx]# vim nginx.conf

修改nginx.conf組態檔，添加對.php檔案的決議

關鍵一：

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
    access_log  /var/log/nginx/access.log  main;

    include /etc/nginx/conf.d/*.conf;

    index   index.html index.htm;

    server {
        listen       80;
        server_name  localhost;
        # 服務根目錄(代碼存放處)，開發環境需要設定為nginx權限，nginx組
        # 當前目錄/usr/share/nginx/html，為root權限，root組，參考關鍵一，更改
        root         /usr/share/nginx/html;

        location / {
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        location ~ \.php$ {
            root           html;
            fastcgi_intercept_errors on;
            # 指定 php-fpm
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            # 關鍵一：如果你默認不更改root目錄地址，就需要將/scripts改為$document_root
            #默認：fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }
    }
}

配置修改php-fpm(權限)

yum安裝的php-fpm組態檔位置：/etc目錄下

[root@centos7php etc]# pwd
/etc
[root@centos7php etc]# ll | grep php
drwxr-xr-x   2 root  root     4096 Sep  7 18:27 php.d
-rw-r--r--   1 root  root     4207 Dec  7  2018 php-fpm.conf
drwxr-xr-x   2 root  root       22 Sep 12 12:19 php-fpm.d
-rw-r--r--   1 root  root    62641 Dec  7  2018 php.ini
drwxr-xr-x   2 root  root     4096 Sep  7 18:27 php-zts.d

關鍵二：

總的默認配置為：php-fpm.conf檔案，因為我們需要修改的是權限，如果主組態檔中沒有，就去找組態檔目錄/etc/php-fpm.d/

[root@centos7php etc]# cd php-fpm.d/
[root@centos7php php-fpm.d]# ll
total 20
-rw-r--r-- 1 root root 18027 Sep 12 12:19 www.conf
[root@centos7php php-fpm.d]# vim www.conf


[www]

; Unix user/group of processes
; Note: The user is mandatory. If the group is not set, the default user's group
;       will be used.
; RPM: apache Choosed to be able to access some dir as httpd
; 關鍵二：因為之前部署環境的時候是采用的，Apache + php,所以此處的user和group才會是Apache的（yum自動配置的）
; 現在我們環境更改為，nginx + php,所以用戶和組改為nginx
;user = apache
user = nginx

; RPM: Keep a group allowed to write in log dir.
;group = apache
group = nginx

listen = 127.0.0.1:9000

重啟nginx,確保php-fpm啟動

[root@centos7php php-fpm.d]# systemctl restart nginx.service 

[root@centos7php php-fpm.d]# netstat -anp | grep 9000
tcp        0      0 127.0.0.1:9000          0.0.0.0:*               LISTEN      61037/php-fpm: mast
[root@centos7php php-fpm.d]# systemctl restart php-fpm

如果nginx啟動失敗，報錯：

Job for nginx.service failed because the control process exited with error code. See “systemctl status nginx.service” and “journalctl -xe” for details.

則，執行命令：nginx -t 查看組態檔報錯位置內容,修改并重啟

[root@centos7php nginx]# nginx -t
nginx: [emerg] invalid number of arguments in "fastcgi_pass" directive in /etc/nginx/nginx.conf:86
nginx: configuration file /etc/nginx/nginx.conf test failed
[root@centos7php nginx]# vim nginx.conf
[root@centos7php nginx]# systemctl restart nginx
[root@centos7php nginx]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

鏈接參考：☆

• 解決nginx FastCGI sent in stderr: “Primary script unknown”

總結

• 自己還是不愿意去看日志，來找問題，浪費了時間和精力，
• 如果下次還繼續配置nginx或者Apache，環境一定要分開，避免因為環境問題導致自己卡主很長時間；
• 大佬的文章其實已經說明白了，因為不熟悉nginx和php-fpm配置，所以寫了這篇文章，防止自己以后忘記；