CentOS中如何配置负载均衡

发布时间:2025-08-20 21:35:46

阅读量:47

在CentOS系统中配置负载均衡，通常使用的是Nginx或HAProxy等软件。以下是使用这两种软件进行负载均衡的基本步骤：

使用Nginx配置负载均衡

安装Nginx
```
sudo yum install nginx
```

启动Nginx服务

sudo systemctl start nginx
sudo systemctl enable nginx

配置负载均衡 编辑Nginx配置文件，通常位于/etc/nginx/nginx.conf或/etc/nginx/conf.d/default.conf。

http {
    upstream backend {
        server backend1.example.com;
        server backend2.example.com;
        server backend3.example.com;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://backend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }
    }
}

重新加载Nginx配置
```
sudo nginx -s reload
```

使用HAProxy配置负载均衡

安装HAProxy
```
sudo yum install haproxy
```

启动HAProxy服务

sudo systemctl start haproxy
sudo systemctl enable haproxy

配置负载均衡 编辑HAProxy配置文件，通常位于/etc/haproxy/haproxy.cfg。

global
    log /dev/log local0
    log /dev/log local1 notice
    daemon

defaults
    log global
    mode http
    option httplog
    option dontlognull
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

frontend http_front
    bind *:80
    default_backend http_back

backend http_back
    balance roundrobin
    server server1 backend1.example.com:80 check
    server server2 backend2.example.com:80 check
    server server3 backend3.example.com:80 check