nginx resolve dns 动态负载均衡简单说明

nginx 新版本支持了dns 动态负载均衡，需要进行dns 配置以及server resolve 的配置

参考使用

配置

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
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;
    gzip_types text/plain application/json application/javascript text/css application/xml;
    upstream backend {
        resolver 10.10.17.10 valid=10s ipv6=off;
        resolver_timeout 10s;
        zone backend_zone 64k;
        server demo.go resolve;
    }
    server {
        listen 80;
        location / {
            proxy_pass http://backend;
        }
    }
}