lvs+keepalived多实例部署

多实例部署就是就是在一台DS上搭建多个vip，为多个集群进行调度工作；这里我用1台DS部署2个vip，同时搭建以备DS：

DS

#yum -y install keepalived

主DS

#vim /etc/keepalived/keepalived.conf

修改配置文件

! Configuration File for keepalived

global_defs {
	notification_email {
	}
}

#第一部分添加一个vrrp_instance VI_2{}
#state都为MASTER
#virtual_router_id不同
#virtual_ipaddress为各自的vip

vrrp_instance VI_1 {
	state MASTER
	interface ens33
	virtual_router_id 51
	priority 100
	advert_int 1
	#nopreempt

	authentication {
    	auth_type PASS
    	auth_pass 1111
	}
	virtual_ipaddress {
    	192.168.146.250
	}
}

vrrp_instance VI_2 {
	state MASTER
	interface ens33
	virtual_router_id 52
	priority 100
	advert_int 1
	#nopreempt

	authentication {
    	auth_type PASS
    	auth_pass 1111
	}
	virtual_ipaddress {
    	192.168.146.150
	}
}
#第二部分添加2个virtual_server
virtual_server 192.168.146.250 80 {
	delay_loop 3
	lb_algo rr
	lb_kind DR
	protocol TCP

	sorry_server 127.0.0.1 80


	real_server 192.168.146.211 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}


	real_server 192.168.146.212 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}
}

virtual_server 192.168.146.150 80 {
	delay_loop 3
	lb_algo rr
	lb_kind DR
	protocol TCP

	sorry_server 127.0.0.1 80


	real_server 192.168.146.213 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}


	real_server 192.168.146.214 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}
}

修改完

#systemctl restart keepalived
#yum -y install httpd
#echo -e "201\nsorry" > /var/www/html/index.html
#systemctl restart httpd

备DS

#vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
	notification_email {
	}
}

vrrp_instance VI_1 {
	state BACKUP
	interface ens33
	virtual_router_id 51
	priority 50
	advert_int 1
	#nopreempt

	authentication {
    	auth_type PASS
    	auth_pass 1111
	}
	virtual_ipaddress {
    	192.168.146.250
	}
}

vrrp_instance VI_2 {
	state BACKUP
	interface ens33
	virtual_router_id 52
	priority 50
	advert_int 1
	#nopreempt

	authentication {
    	auth_type PASS
    	auth_pass 1111
	}
	virtual_ipaddress {
    	192.168.146.150
	}
}

virtual_server 192.168.146.250 80 {
	delay_loop 3
	lb_algo rr
	lb_kind DR
	protocol TCP

	sorry_server 127.0.0.1 80


	real_server 192.168.146.211 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}


	real_server 192.168.146.212 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}
}

virtual_server 192.168.146.150 80 {
	delay_loop 3
	lb_algo rr
	lb_kind DR
	protocol TCP

	sorry_server 127.0.0.1 80


	real_server 192.168.146.213 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}


	real_server 192.168.146.214 80 {
        	weight 1
    	TCP_CHECK {
        	connect_timeout 3
        	retry 3
        	delay_before_retry 3
    	}
	}
}

备DS有2处需要修改：
state BACKUP
priority 50优先级要低于主DS

#systemctl restart keepalived
#yum -y install httpd
#echo -e "202\nsorry" > /var/www/html/index.html
#systemctl restart httpd

RS

RS1、RS2

#ifconfig lo:0 192.168.146.250 broadcast 192.168.146.250 netmask 255.255.255.255 up

#route add -host 192.168.146.250 dev lo：0

#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/ner/ipv4/conf/all/arp_announce

RS1

#yum -y install httpd
#echo -e "211\n1" > /var/www/html/index.html
#systemctl restart httpd

RS2

#yum -y install httpd
#echo -e "212\n1" > /var/www/html/index.html
#systemctl restart httpd

RS3、RS4

#ifconfig lo:0 192.168.146.150 broadcast 192.168.146.150 netmask 255.255.255.255 up

#route add -host 192.168.146.150 dev lo：0

#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/ner/ipv4/conf/all/arp_announce

RS3

#yum -y install httpd
#echo -e "213\n2" > /var/www/html/index.html
#systemctl restart httpd

RS4

#yum -y install httpd
#echo -e "214\n2" > /var/www/html/index.html
#systemctl restart httpd

测试

停掉主DS keepalived，测试；
停掉RS1，测试；
停掉RS2，测试