nginx/1.4.6 (Ubuntu14 Digital Ocean) 中的 502 Bad Gateway答案

【问题标题】：502 Bad Gateway in nginx/1.4.6 (Ubuntu14 Digital Ocean)nginx/1.4.6 (Ubuntu14 Digital Ocean) 中的 502 Bad Gateway
【发布时间】：2017-01-26 12:11:54
【问题描述】：

我正在安装 PHP7.0、Nginx1.4.6 并配置如下，但我遇到了很多错误。

sudo nano /etc/php/7.0/fpm/pool.d/www.conf

#listen = /run/php/php7.0-fpm.sock
#listen = /var/run/php/php7.0-fpm.sock
listen = 127.0.0.1:9000
user = www-data
group = www-data
listen.owner = www-data
listen.group = www-data
listen.mode = 0660

server {
#       listen 80 default_server;
        listen 80;
        listen [::]:80 default_server ipv6only=on;

        location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        #fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        fastcgi_pass 127.0.0.1:9000;
        #fastcgi_index index.php;
        #fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

让我们看看日志：

2017/01/26 03:33:54 [error] 2976#0: *8 connect() failed (111: Connection refused) while connecting to upstream, client: 96.9.77.42, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "128.199.133.1$
2017/01/26 03:33:55 [error] 2976#0: *8 connect() failed (111: Connection refused) while connecting to upstream, client: 96.9.77.42, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "128.199.133.1$
2017/01/26 03:33:55 [error] 2976#0: *8 connect() failed (111: Connection refused) while connecting to upstream, client: 96.9.77.42, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "128.199.133.1$

【问题讨论】：

服务 php7.0-fpm 重启
多次重启服务器但还是一样
不监听 9000 端口从 127.0.0.1 移除 9000；
在 www.conf 或 sites-enable 中？
在 www.conf 中试试

标签： nginx

【解决方案1】：

您可能需要将listen.allowed_clients 设置为127.0.0.1 并评论group 和user 部分

# only localhost can connect to PHP-FPM
listen = 127.0.0.1:9000
listen.allowed_clients = 127.0.0.1
# listen.owner = www-data
# listen.group = www-data

然后重启php-fpm服务，检查是否在9000端口上运行

【讨论】：

root@ubuntu-512mb-sgp1-01:~# netstat -ntlp | grep LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1443/sshd tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 1505/mysqld tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 2760/nginx tcp6 0 0 :::22 :::* LISTEN 1443/sshd tcp6 0 0 :::80 :::* LISTEN 2760/nginx
没有php-fpm进程在运行？
是的，我找不到它，但是当我 sudo php7.0-fpm restart 它发送给我 php7.0-fpm start/running, process 2779
我需要重启服务器吗？
运行，sudo restart php7.0-fpm