LVS+Keepalived高可用部署

一、LVS+Keepalived高可用部署

  一、keepalived节点部署

　　1、安装keepalived

yum install keepalived ipvsadm -y
mkdir -p /opt/ytd_scripts/keepalived
cat>/opt/ytd_scripts/keepalived/UDP_CHECK.sh<<EOF
#!/bin/bash
/usr/bin/nc -uz -w1 $1 $2 | grep succeeded >/dev/null
exit $?
EOF
cp -rp  /etc/keepalived/keepalived.conf{,.bak}

　　2、更改keepalived.conf

　　注意：加权平均时，2个节点不要设置成1

　　　　1、master节点配置

vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 20180126
    }
    virtual_ipaddress {
        10.100.62.66
    }
}

###zuul-8080####
virtual_server 10.100.62.66 8080 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 5
    protocol TCP

    real_server 10.100.62.43 8080 {
        weight 20
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
            connect_port 8080
        }
    }

    real_server 10.100.62.44 8080 {
        weight 20
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
            connect_port 8080
        }
    }
}

###zuul-8080-udp####
virtual_server 10.100.62.66 8080 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 5
    protocol UDP
    
    real_server 10.100.62.43 8080 {
        weight 20        MISC_CHECK {
        misc_path "/opt/ytd_scripts/keepalived/UDP_CHECK.sh 10.100.62.43 8080"
        misc_timeout 3
        }
    }   
    
    real_server 10.100.62.44 8080 {
        weight 20
        MISC_CHECK {
        misc_path "/opt/ytd_scripts/keepalived/UDP_CHECK.sh 10.100.62.44 8080"
        misc_timeout 3
        }
    }   
}

/etc/keepalived/keepalived.conf