Nginx 作为 CentOS 7 上 Node.js 应用程序的反向代理
Nginx as reverse proxy for Node.js app on CentOS 7
我在服务器 port 5000
上有一个节点应用程序 运行,可以从我的浏览器访问。未安装 Apache。我按照安装和配置 Nginx 的指南进行操作,我能够成功打开为 centos Nginx 安装提供的默认 HTML 页面,这意味着端口 80 已打开(尚无 SSL)。然后我通过添加以下内容编辑了 /etc/nginx/nginx.conf
中的 location
设置:
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_pass http://localhost:5000;
}
在 sudo systemctl restart nginx
成功重启后,我现在看到一个默认错误页面,它是 nginx 安装附带的,而不是我在 server_ip:5000 上运行的应用程序。我如何正确调试它并找出反向代理不起作用的原因?
我的完整 nginx.conf(我只删除了评论的 SSL 设置):
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
root /usr/share/nginx/html;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_pass http://localhost:5000;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
}
我收到的错误页面是:/usr/share/nginx/html/50x.html
。
请更新您的 server
块,如下所示:
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_set_header X-NginX-Proxy true;
proxy_pass http://localhost:5000;
proxy_redirect off;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
此外,请确保您的应用程序正在侦听 localhost:5000
。有时,该服务仅绑定到接口 IP 而不是本地主机。
如果问题仍然存在,请检查您的 nginx 错误日志并提供日志中的错误消息。
连同 nginx 配置文件,这是默认情况下禁用的 selinux 模块 httpd_can_network_connect
的问题。您可以通过以下命令启用它:
setsebool -P httpd_can_network_connect on
找到更多详细信息
我在服务器 port 5000
上有一个节点应用程序 运行,可以从我的浏览器访问。未安装 Apache。我按照安装和配置 Nginx 的指南进行操作,我能够成功打开为 centos Nginx 安装提供的默认 HTML 页面,这意味着端口 80 已打开(尚无 SSL)。然后我通过添加以下内容编辑了 /etc/nginx/nginx.conf
中的 location
设置:
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_pass http://localhost:5000;
}
在 sudo systemctl restart nginx
成功重启后,我现在看到一个默认错误页面,它是 nginx 安装附带的,而不是我在 server_ip:5000 上运行的应用程序。我如何正确调试它并找出反向代理不起作用的原因?
我的完整 nginx.conf(我只删除了评论的 SSL 设置):
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 1024;
}
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
root /usr/share/nginx/html;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_pass http://localhost:5000;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
}
我收到的错误页面是:/usr/share/nginx/html/50x.html
。
请更新您的 server
块,如下所示:
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
# Load configuration files for the default server block.
include /etc/nginx/default.d/*.conf;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_set_header X-NginX-Proxy true;
proxy_pass http://localhost:5000;
proxy_redirect off;
}
error_page 404 /404.html;
location = /40x.html {
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
}
}
此外,请确保您的应用程序正在侦听 localhost:5000
。有时,该服务仅绑定到接口 IP 而不是本地主机。
如果问题仍然存在,请检查您的 nginx 错误日志并提供日志中的错误消息。
连同 nginx 配置文件,这是默认情况下禁用的 selinux 模块 httpd_can_network_connect
的问题。您可以通过以下命令启用它:
setsebool -P httpd_can_network_connect on
找到更多详细信息