Nginx 反向代理负载均衡,nginx代理负载均衡

Nginx 反向代理负载均衡,nginx代理负载均衡

nginx.conf配置文件：

user nobody nobody;

worker_processes 4;

error_log logs/error.log crit;

pid logs/nginx.pid;

worker_rlimit_nofile 65535;

events {

use epoll;

worker_connections 65535;

}

http {

server_tokens off;

include mime.types;

default_type application/octet-stream;

server_names_hash_bucket_size 128;

sendfile on;

tcp_nopush on;

tcp_nodelay on;

keepalive_timeout 65;

gzip on;

gzip_min_length 1k;

gzip_buffers 4 16k;

gzip_http_version 1.0;

gzip_comp_level 2;

gzip_types text/plain application/x-javascript text/css application/xml;

gzip_vary on;

upstream mysrv {

server 192.168.1.1:80 weight=1 max_fails=2 fail_timeout=30s;

server 192.168.1.2:80 weight=1 max_fails=2 fail_timeout=30s;

}

upstream bench {

server 192.168.1.3:80 weight=1 max_fails=2 fail_timeout=30s;

server 192.168.1.4:80 weight=1 max_fails=2 fail_timeout=30s;

}

upstream bbs {

server 192.168.1.5:80 weight=1 max_fails=2 fail_timeout=30s;

server 192.168.1.6:80 weight=1 max_fails=2 fail_timeout=30s;

}

include vhost/*.conf;

}

aaa_example_com.conf配置文件：

server {

listen 80;

server_name aaa.example.com;

index index.php index.html index.htm index.shtml;

log_format proxy '$remote_addr| $upstream_addr| $connection| $upstream_status| $time_local| $request|'

' $status| $body_bytes_sent| $bytes_sent| $http_referer|'

' $http_user_agent| $upstream_response_time| $msec| $request_time';

access_log logs/aaa_access.log proxy;

location / {

proxy_passhttp://mysrv;

include proxy.conf;

}

location /bench/ {

proxy_passhttp://bench;

include proxy.conf;

}

}

bbs_example_com.conf配置文件：

server {

listen 80;

server_name bbs.example.com *.bbs.example.com;

log_format proxy '$remote_addr| $upstream_addr| $connection| $upstream_status| $time_local| $request|'

' $status| $body_bytes_sent| $bytes_sent| $http_referer|'

' $http_user_agent| $upstream_response_time| $msec| $request_time';

access_log logs/bbs_access.log proxy;

location / {

proxy_passhttp://bbs;

include proxy.conf;

}

}

proxy.conf配置文件：

proxy_redirect off;

proxy_set_header Host $host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

client_max_body_size 50m; //允许客户端请求的最大单个文件字节数

client_body_buffer_size 256k; //缓冲区代理缓冲客户端请求的最大字节数

proxy_connect_timeout 30; //连接后端服务器超时时间

proxy_send_timeout 30; //后端服务器发送数据超时时间

proxy_read_timeout 60; //后端服务器响应请求超时时间

proxy_buffer_size 4k; //代理请求缓存区大小

proxy_buffers 4 32k;

proxy_busy_buffers_size 64k; //系统繁忙时可申请的proxy_buffers大小

proxy_temp_file_write_size 64k; //proxy缓存临时文件的大小

proxy_next_upstream error timeout invalid_header http_500 http_503 http_404; //故障转移

proxy_max_temp_file_size 128m;

proxy_set_header指令用于在向反向代理的后端web服务器发起请求时添加指定Header头信息，当后端web服务器上有多个基于域名的虚拟主机时，要通过添加Header头信息Host，来指定请求的域名，这样后端web服务器才能识别该反向代理访问请求由哪个虚拟主机来处理。