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Keepalived 高可用

news 来源：原创 2025/6/15 12:13:23

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案例

#  192.168.88.22 真实服务IP
#  192.168.88.33 真实服务IP
#  192.168.88.99 负载均衡服务IP
#  192.168.88.99 负载均衡服务IP
echo "RS-192.168.88.22 service" > /var/www/html/index.nginx-debian.html
echo "RS-192.168.88.33 service" > /var/www/html/index.nginx-debian.htm
apt update && apt install keepalived -y

》》》》 22、33 真实服务器
1、通过安装Nginx（当作web服务的），当然也可以安装tomcat
2、修改nginx的默认网页内容

## 修改之后 
## nginx -t  测试一下语法
## nginx -s reload   加载配置
## vim /etc/nginx/nginx.conf
worker_processes  2;events {worker_connections  1024;
}http {upstream httpd {server 192.168.88.22;server 192.168.88.33;}include       mime.types;default_type  application/octet-stream;sendfile        on;server {listen       80;#  为了模拟域名访问，  需要在访问的客户端 host 加   IP  service.zen.com# server_name  service.zen.com;#charset koi8-r;#access_log  logs/host.access.log  main;location / {proxy_pass http://httpd;}}}

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》》》》 99、100 负载均衡服务器
1、通过安装Nginx（当作负载均衡），当然也可以LVS、HAProxy
2、修改nginx的配置文件
3、安装keepalived

# apt update && apt install nginx -y
# apt update && apt install keepalived -y
#  systemctl enable keepalived
#  systemctl start keepalived

## vim /etc/keepalived/keepalived.conf!Configuration File for keepalivedglobal_defs{router_id 99
}vrrp_instance VI_1 {state masterinterface ens33virtual_router_id 88priority 100advert_int 2authentication {auth_type PASSauth_pass 1234}virtual_ipaddress{192.168.88.200/24}
}