keepalived 高可用lvs

[root@rs1 ~]# yum install httpd -y
[root@rs1 ~]# echo "this is r1" > /var/www/html/index.html
[root@rs1 ~]# systemctl start httpd

[root@rs2 ~]# yum install httpd -y
[root@rs2 ~]# echo "this is r2" > /var/www/html/index.html
[root@rs2 ~]# systemctl start httpd

[root@lvs ~]# yum install ipvsadm -y
[root@lvs ~]# yum install keepalived -y
[root@lvs ~]# yum install httpd -y
[root@lvs ~]# echo "this is lvs1" > /var/www/html/index.html
[root@lvs ~]# systemctl start httpd

[root@lvs2 ~]# yum install httpd -y
[root@lvs2 ~]# echo "this is lvs2" > /var/www/html/index.html
[root@lvs2 ~]# systemctl start httpd
[root@lvs2 ~]# yum install ipvsadm -y
[root@lvs2 ~]# yum install keepalived -y

[root@router network-scripts]# cp ifcfg-ens33 ifcfg-eth1
[root@router network-scripts]# vim ifcfg-eth1
NAME="eth1"
DEVICE="eth1"
ONBOOT=yes
NETBOOT=yes
BOOTPROTO=static
IPADDR=172.16.14.100
NETMASK=255.255.0.0
TYPE=Ethernet

[root@router network-scripts]# systemctl restart network
[root@router network-scripts]# ip a a 10.0.0.10/8 dev eth0:1 #：这个是临时加的，如果想永久有效，写在配置文件中

[root@router ~]# vim /etc/sysctl.conf
net.ipv4.ip_forward=1
[root@router ~]# sysctl -p

[root@client ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
NAME="eth0"
DEVICE="eth0"
ONBOOT=yes
NETBOOT=yes
BOOTPROTO=static
IPADDR=172.16.14.200
NETMASK=255.255.0.0
GATEWAY=172.16.14.100
TYPE=Ethernet

[root@rs1 ~]# vinet
NAME="eth0"
DEVICE="eth0"
ONBOOT=yes
NETBOOT=yes
UUID="95b18552-6cc5-48c5-b29a-91ed73675c50"
BOOTPROTO=static
IPADDR=192.168.37.24
NETMASK=255.255.255.0
GATEWAY=192.168.37.22
[root@rs1 ~]# systemctl restart network

[root@rs2 ~]# vinet
NAME="eth0"
DEVICE="eth0"
ONBOOT=yes
NETBOOT=yes
UUID="cdd70dbc-1363-45da-9c7a-0ae369f9aac3"
BOOTPROTO=static
IPADDR=192.168.37.25
NETMASK=255.255.255.0
GATEWAY=192.168.37.22
[root@rs2 ~]# systemctl restart network

[root@lvs ~]# vinet
NAME="eth0"
DEVICE="eth0"
ONBOOT=yes
NETBOOT=yes
UUID="15caec5a-6740-4a81-8c72-5fbcb6fb9d25"
BOOTPROTO=static
IPADDR=192.168.37.23
NETMASK=255.255.255.0
GATEWAY=192.168.37.22
TYPE=Ethernet
[root@lvs2 ~]# vinet
NAME="eth0"
DEVICE="eth0"
ONBOOT=yes
NETBOOT=yes
UUID="686fb723-2360-4683-bb81-8bc6a20778ff"
BOOTPROTO=static
IPADDR=192.168.37.26
NETMASK=255.255.255.0
GATEWAY=192.168.37.22

[root@rs1 ~]# ifconfig lo:1 10.0.0.100 netmask 255.255.255.255
[root@rs1 ~]# route add -host 10.0.0.100 dev lo:1
[root@rs1 ~]# vim /etc/sysctl.conf 
net.ipv4.conf.all.arp_ignore=1
net.ipv4.conf.lo.arp_ignore=1
net.ipv4.conf.all.arp_announce=2
net.ipv4.conf.lo.arp_announce=2
[root@rs1 ~]# sysctl -p


[root@rs2 ~]# ifconfig lo:1 10.0.0.100 netmask 255.255.255.255
[root@rs2 ~]# route add -host 10.0.0.100 dev lo:1
[root@rs2 ~]# vim /etc/sysctl.conf 
net.ipv4.conf.all.arp_ignore=1
net.ipv4.conf.lo.arp_ignore=1
net.ipv4.conf.all.arp_announce=2
net.ipv4.conf.lo.arp_announce=2
[root@rs2 ~]# sysctl -p

[root@lvs ~]# vim /etc/keepalived/keepalived.conf

[root@lvs2 ~]# systemctl start keepalived
[root@lvs ~]# systemctl start keepalived

[root@lvs keepalived]# vim notify.sh
#!/bin/bash
#
contact=‘root@localhost‘
notify() {
mailsubject="$(hostname) to be $1, vip floating"
mailbody="$(date +‘%F %T‘): vrrp transition, $(hostname) changed to be $1"
echo "$mailbody" | mail -s "$mailsubject" $contact
}
case $1 in
master)
notify master
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage: $(basename $0) {master|backup|fault}"
exit 1
;;
esac

[root@lvs keepalived]# vim keepalived.conf
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 77
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
        10.0.0.100/8 dev eth0 lable eth0:1
    }
notify_master "/etc/keepalived/notify.sh master"
notify_backup "/etc/keepalived/notify.sh backup"
notify_fault "/etc/keepalived/notify.sh fault"
}