Nginx均衡TCP协议服务器案例

Z时代
2024-01-10
分类：综合

nginx在1.9版本之后可以充当端口转发的作用，即：访问该服务器的指定端口，nginx就可以充当端口转发的作用将流量导向另一个服务器，同时获取目标服务器的返回数据并返回给请求者。

nginx的TCP代理功能跟nginx的反向代理不同的是：请求该端口的所有流量都会转发到目标服务器，而在反向代理中可以细化哪些请求分发给哪些服务器；另一个不同的是，nginx做TCP代理并不仅仅局限于WEB的URL请求，还可以转发如memcached、MySQL等点到点的请求。

实现步骤如下：

（1）nginx在编译时添加“–with-stream”：

./configure –prefix=/usr/local/nginx –user=www –group=www –with-http_stub_status_module –with-pcre=/usr/local/src/pcre-8.38 –add-module=/usr/local/src/ngx_cache_purge-2.3 –with-http_gzip_static_module –with-stream 其中 /usr/local/src/ngx_cache_purge-2.3 是下载 ngx_cache_purge-2.3 解压后的目录

/usr/local/src/pcre-8.38 是下载 pcre-8.38 解压后的目录

（2）修改nginx配置文件nginx.conf：

[root@tkde-iphone ~]# vim /usr/local/nginx/conf/nginx.conf
user  www www;
worker_processes  32; 
pid        logs/nginx.pid;
events {
#use epoll;                            #Linux最常用支持大并发的事件触发机制
    worker_connections  65535;
}
stream {
    upstream zifangsky {
hash$remote_addr consistent;
        server 10.10.100.31:8000;
    }
    server {
        listen 8080;
        proxy_connect_timeout 5s;
        proxy_timeout 5s;
        proxy_pass zifangsky;
    }
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
#tcp_nopush     on;
#keepalive_timeout  0;
    keepalive_timeout  65;
#gzip  on;
    server {
        listen       9000;
        server_name  localhost;
#charset koi8-r;
#access_log  logs/host.access.log  main;
        location / {
            root   html;
            index  index.html index.htm;
        }
    }}

在上面的配置文件中配置了在访问此服务器的8080端口时，会将流量相应转发到10.10.100.31这个服务器的8000端口上

（3）查看是否监听端口：

[root@app01 nginx]# netstat -apn | grep 8080:

（4）测试连接目标端口：

[root@app01 nginx]# telnet 10.10.100.31 8000
Trying 10.10.100.31...
Connected to 10.10.100.31.Escape character is ‘^]‘.

（5）在其他客户机上测试连接nginx服务器的8080端口端口：

[root@app05 ~]# telnet 192.168.1.30 8080
Trying 192.168.1.30...
Connected to 192.168.1.30.
Escape character is ‘^]‘.Connection closed by foreign host.

当然，后面就是在客户机上将原来连接10.10.100.31的地方改成连接nginx服务器的地址，如果业务没有出现问题的话，则说明已经配置完成了

nginx配置http协议和tcp协议配置文件案例

#user nobody;
worker_processes 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
#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 logs/access.log main;
sendfile on;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
server {
listen 80;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}}

#tcp 协议

stream {
upstream test-server-sr {
server 20.0.1.104:11000;
}
server {
#so_keepalive=on 保证连接持续
listen 12000 so_keepalive=on;
#listen 12000;
# proxy_connect_timeout 1s;
#    # proxy_timeout 3s;
proxy_pass test-server;
}
}}