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CentOS中如何进行负载均衡配置

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2025-03-11 18:52:28
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在CentOS中进行负载均衡配置可以通过多种方法实现,以下是几种常见的方法:

使用LVS和Keepalived实现负载均衡

  1. 安装必要的软件包
yum install -y ipvsadm keepalived
  1. 配置Keepalived
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1

    authentication {
        auth_type PASS
        auth_pass 123456
    }

    virtual_ipaddress {
        192.168.2.254
    }
}
  1. 启动Keepalived服务
systemctl start keepalived
systemctl enable keepalived

使用Nginx实现负载均衡

  1. 安装Nginx
yum install nginx -y
  1. 配置Nginx
http {
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
    }

    server {
        listen 80;
        server_name example.com;

        location / {
            proxy_pass http://backend;
        }
    }
}
  1. 启动Nginx服务
systemctl start nginx
systemctl enable nginx

使用HAProxy实现负载均衡

  1. 安装HAProxy
yum install haproxy -y
  1. 配置HAProxy
global
    log /dev/log local0
    log /dev/log local1 notice
    maxconn 4096
    tune.ssl.default-dh-param 2048

defaults
    log global
    mode http
    option httplog
    option dontlognull
    retries 3
    timeout http-request 10s
    timeout queue 1m
    timeout connect 10s
    timeout client 1m
    timeout server 1m

frontend http-in
    bind *:80
    default_backend servers

backend servers
    balance roundrobin
    server server1 192.168.0.101:80
    server server2 192.168.0.102:80
  1. 启动HAProxy服务
systemctl start haproxy
systemctl enable haproxy

以上是在CentOS系统中进行负载均衡配置的几种常见方法。

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