LVS+Keepalived群集

主调度器：
[root@localhost ~]# systemctl stop NetworkManager
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# yum -y install keepalived ipvsadm
[root@localhost ~]# cd /etc/keepalived/
[root@localhost keepalived]# cp keepalived.conf keepalived.conf.bak
[root@localhost keepalived]# vi keepalived.conf
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_01
}

vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 1
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.16.16.172
}
}

virtual_server 172.16.16.172 80 {
delay_loop 15
lb_algo rr
lb_kind DR
nat_mask 255.255.255.0
! persistence_timeout 50
protocol TCP

real_server 172.16.16.177 80 {
     weight 1
    TCP_CHECK {
        connect_port 80
        connect_timeout 3
        nb_get_retry 3
        delay_before_retry 4
    }
}
real_server 172.16.16.178 80 {
    weight 1
    TCP_CHECK {
        connect_port 80
        connect_timeout 3
        nb_get_retry 3
        delay_before_retry 4

    }
}

}

[root@localhost ~]# vi /etc/sysctl.conf
在末尾添加：
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.eth0.send_redirects = 0
[root@localhost ~]# sysctl -p

[root@localhost keepalived]# systemctl start keepalived
[root@localhost keepalived]# ip add show dev eth0

备调度器：
[root@localhost ~]# systemctl stop NetworkManager
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# cd /etc/keepalived/
[root@localhost keepalived]# cp keepalived.conf keepalived.conf.bak

[root@localhost keepalived]# vi keepalived.conf
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_02
}

vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 1
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.16.16.172
}
}

virtual_server 172.16.16.172 80 {
delay_loop 15
lb_algo rr
lb_kind DR
nat_mask 255.255.255.0
! persistence_timeout 50
protocol TCP

real_server 172.16.16.177 80 {
     weight 1
    TCP_CHECK {
        connect_port 80
        connect_timeout 3
        nb_get_retry 3
        delay_before_retry 4
    }
}
real_server 172.16.16.178 80 {
    weight 1
    TCP_CHECK {
        connect_port 80
        connect_timeout 3
        nb_get_retry 3
        delay_before_retry 4

    }
}

}

[root@localhost ~]# vi /etc/sysctl.conf
在末尾添加：
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.eth0.send_redirects = 0
[root@localhost ~]# sysctl -p
[root@localhost keepalived]# systemctl start keepalived
[root@localhost keepalived]# ip add show dev eth0