在CentOS系统中实现负载均衡可以通过多种方法来完成,以下是几种常见的方法:
sudo yum install epel-release
sudo yum install nginx
/etc/nginx/nginx.conf
或 /etc/nginx/conf.d/
目录下的某个文件中。upstream backend {
server backend1.example.com;
server backend2.example.com;
server backend3.example.com;
}
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://backend;
}
}
sudo systemctl start nginx
sudo systemctl enable nginx
可以使用 curl
或浏览器访问你的服务器,并检查请求是否被负载均衡到不同的后端服务器上。
sudo yum install ipvsadm keepalived
/etc/keepalived/keepalived.conf
文件,配置VRRP实例和虚拟IP地址(VIP)。vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1234
}
virtual_ipaddress {
192.168.2.254
}
}
sudo systemctl start keepalived
sudo systemctl enable keepalived
sudo yum install haproxy
/etc/haproxy/haproxy.cfg
文件,添加负载均衡配置。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
timeout connect 5000
timeout client 50000
timeout server 50000
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
sudo systemctl start haproxy
sudo systemctl enable haproxy
通过以上步骤,你可以在CentOS系统中实现Nginx、LVS与Keepalived以及HAProxy的负载均衡。根据实际需求,选择合适的负载均衡方法并进行相应的配置即可。