负载均衡

upstream lbs {
        server ip;
        server ip;
}       
server {
        listen 80;
        server_name 域名;
        location / {
                proxy_pass http://lbs;
        }       
}

分配策略

轮询 (默认)

按顺序逐一分配

权重

weight 默认1；
值越大，分配越多

upstream lbs {
        server ip weight=1;
        server ip weight=2;
}

哈希

ip_hash
每个访客访问固定服务器，可解决session问题

upstream lbs {
        ip_hash
        server ip;
        server ip;
}

fair

按照后端响应时间分配

upstream lbs {
        server ip;
        server ip;
  fair
}

登录

upstream lbs {
              sticky;
        server ip;
        server ip;
}       
server {
        listen 80;
        server_name 域名;
        location / {
                proxy_pass http://lbs;
                            client_max_body_size 1000m;
                            proxy_set_header terminal_id $http_terminal_id;
                          proxy_set_header Host $host:$server_port;
                            proxy_set_header X_Read_IP $remote_addr;
                            proxy_set_header X-Forwarded-For $proxy_add_x_forearded_for;
                            proxy_set_header X-Forwarded-Proto "https";
                            proxy_set_header X-Forwarded-Host $host;
                            proxy_set_header X-Forwarded-Server $host;
                            # keepalive_timeout 300;
                          # proxy_connect_timeout 300;
                            # proxy_read_timeout 300;
        }       
}

应用

upstream lbs {
        server ip;
        server ip;
}       
server {
        listen 80;
        server_name 域名;
        location / {
                proxy_pass http://lbs;
                            client_max_body_size 1000m;
                            proxy_set_header terminal_id $http_terminal_id;
                          proxy_set_header Host $host:$server_port;
                            proxy_set_header X_Read_IP $remote_addr;
                            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                            proxy_set_header X-Forwarded-Host $host;
                            proxy_set_header X-Forwarded-Server $host;
                            index index.html index.htm index.jsp;
                            # add_header Access-Control-Allow-Origin *;
                           #    proxy_set_header X-Forwarded-Proto "https";
        }       
}