Nginx之——Nginx作为TCP负载均衡

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这两天考虑mysql的集群，考虑负载均衡，了解nginx在版本1.9.0以后支持tcp的负载均衡，具体可以参照官网关于模块ngx_stream_core_module的叙述

nginx从1.9.0后引入模块ngx_stream_core_module，模块是没有编译的，需要用到编译需添加--with-stream配置参数，stream负载均衡官方配置样例

worker_processes auto;error_log /var/log/nginx/error.log info;events {    worker_connections  1024;}stream {    upstream backend {        hash $remote_addr consistent;        server backend1.example.com:12345 weight=5;        server 127.0.0.1:12345            max_fails=3 fail_timeout=30s;        server unix:/tmp/backend3;    }    upstream dns {       server 192.168.0.1:53535;       server dns.example.com:53;    }    server {        listen 12345;        proxy_connect_timeout 1s;        proxy_timeout 3s;        proxy_pass backend;    }    server {        listen 127.0.0.1:53 udp;        proxy_responses 1;        proxy_timeout 20s;        proxy_pass dns;    }    server {        listen [::1]:12345;        proxy_pass unix:/tmp/stream.socket;    }}

参照此配置文件修改自定义配置文件

user  nginx;#user root;worker_processes  1;error_log  /var/log/nginx/error.log warn;pid        /var/run/nginx.pid;events {    worker_connections  1024;}http {    include       /etc/nginx/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  /var/log/nginx/access.log  main;    sendfile        on;    #tcp_nopush     on;    keepalive_timeout  65;    #gzip  on;    include /etc/nginx/conf.d/*.conf;}stream{upstream mysql{server 192.168.1.106:3306 weight=1;server 192.168.1.108:3306 weight=1;}        server{listen 3307;proxy_pass mysql;}}

stream与http同级别，上文为main

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