Ubuntu 20.04 安装 Keepalived

1、准备

#更新软件源中的所有软件列表（必须）
sudo apt update# 更新软件（建议）
sudo apt upgrade# 更新系统版本（非必要时，不建议升级）
sudo apt dist-upgrade

2、安装Keepalived

sudo apt install keepalived

 3、配置Keepalived

Server1 IP地址172.16.10.21，Keepalived 配置

vrrp_instance VI_1 {state MASTERinterface ens32virtual_router_id 51priority 100    # 优先级 (主服务器优先级高)advert_int 1    # 心跳间隔 (秒)authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {172.16.10.20 # 虚拟IP}
}

Server2 IP地址172.16.10.22，Keepalived 配置

vrrp_instance VI_1 {state BACKUPinterface ens32virtual_router_id 51priority 99     # 优先级 (从服务器优先级低)advert_int 1    # 心跳间隔 (秒)authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {172.16.10.20 # 虚拟IP}
}

启动主从服务器的Keepalived，配置好站点并测试

sudo service keepalived start