image.png

安装ipvs,keepalived

sudo apt install ipvsadm
sudo apt install keepalived

本机是否支持ipvs

sudo lsmod | grep ip_vs

global_defs {
    router_id m1
}
# VRRP Configuration
vrrp_instance LVS { 
    state MASTER 
    interface enp3s0 
    virtual_router_id 51 
    priority 150 
    advert_int 1 
    authentication { 
        auth_type PASS 
        auth_pass k8s 
    }
    virtual_ipaddress { 
        192.168.5.209
    }
}
virtual_server 192.168.5.209 80 { 
    delay_loop 6 
    lb_algo rr 
    lb_kind DR 
    persistence_timeout 0 
    protocol TCP 
    real_server 192.168.5.217 80 { 
        weight 1 
        TCP_CHECK { 
            connect_timeout 10 
            nb_get_retry 3 
            delay_before_retry 3 
            connect_port 80 
        } 
    } 
    real_server 192.168.5.215 80 { 
        weight 1 
        TCP_CHECK { 
            connect_timeout 10 
            nb_get_retry 3 
            delay_before_retry 3 
            #connect_port 80 
        } 
    } 
    real_server 192.168.5.216 80 { 
        weight 1 
        TCP_CHECK { 
            connect_timeout 10 
            nb_get_retry 3 
            delay_before_retry 3 
            #connect_port 80 
        } 
    } 
}

RS节点配置lvsrs

sudo vi /etc/init.d/lvsrs

#!/bin/bash

ifconfig lo:0 192.168.5.209 netmask 255.255.255.255 broadcast 192.168.5.209 up
route add -host 192.168.5.209 dev lo:0

echo "0" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce

exit 0

chmod +x /etc/init.d/lvsrs
sudo /etc/init.d/lvsrs

启动 keepalived

sudo service keepalived start

查看ipvs

ipvsadm -ln