如何通过VPS均衡负载提升网站性能和可用性？

VPS均衡负载配置完整指南

什么是VPS均衡负载？

主要实现方法与步骤

详细配置步骤

步骤一：Nginx反向代理配置

# 负载均衡配置示例
upstream backendservers {
    server 192.168.1.10:8080 weight=3;
    server 192.168.1.11:8080 weight=2;
    server 192.168.1.12:8080 weight=1;
    
    # 健康检查配置
    check interval=3000 rise=2 fall=3 timeout=1000;
}
server {
    listen 80;
    servername example.com;
    
    location / {
        proxypass http://backendservers;
        proxysetheader Host $host;
        proxysetheader X-Real-IP $remoteaddr;
        proxysetheader X-Forwarded-For $proxyaddxforwardedfor;
    }
}

# HAProxy配置示例
global
    daemon
    maxconn 4096
defaults
    mode tcp
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms
frontend httpfront
    bind *:80
    defaultbackend httpback
backend httpback
    balance roundrobin
    server web1 192.168.1.10:80 check
    server web2 192.168.1.11:80 check
    server web3 192.168.1.12:80 check
    
    # 健康检查配置
    option httpchk GET /health
    http-check expect status 200

; DNS轮询配置示例
example.com.    IN    A    192.168.1.10
example.com.    IN    A    192.168.1.11
example.com.    IN    A    192.168.1.12

# Nginx会话保持配置
upstream backendservers {
    iphash;
    server 192.168.1.10:8080;
    server 192.168.1.11:8080;
    server 192.168.1.12:8080;
}