keepalived+lvs高可用一个集群服务
准备阶段：keepalived
ipvsadm
IP设计：
LVS-DR-MASTER：172.18.1.105
LVS-DR-BACKUP：172.18.1.106
VIP:172.18.1.66
GateWay:192.168.10.254
RS1:192.168.10.11
RS2:192.168.10.12
编辑主路由/etc/keepalived/keepalived.conf
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global_defs {
notification_email {
root@localhost#发送邮件地址为本机的root
}
notification_email_from test@ka.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id node1
vrrp_mcast_group4 224.0.49.18
}
vrrp_instance VI_1 {
state MASTER#为主路由
interface eno16777736
virtual_router_id 49
priority 100 #优先级，数字越大优先级越高
advert_int 1
authentication {
auth_type PASS
auth_pass khR8lPmc
}
virtual_ipaddress {
172.18.100.88 dev eno16777736 label eno16777736:0
}
}
将此文件复制到备路由一份，并保存到/etc/keepalived/keepalived.conf
只需要更改
state BACKUP
priority 98
接下来测试
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# systemctl start keepalived.service #先启动主路由
# ifconfig #查看地址，172.18.100.88已经添加上了
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 172.18.1.109netmask 255.255.0.0broadcast 172.18.255.255
inet6 fe80::20c:29ff:fef8:338prefixlen 64scopeid 0x20<link>
ether 00:0c:29:f8:03:38txqueuelen 1000(Ethernet)
RX packets 8698bytes 5562385 (5.3 MiB)
RX errors 0dropped 0overruns 0frame 0
TX packets 8582bytes 897646 (876.6 KiB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
eno16777736:0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 172.18.100.88netmask 255.255.255.255broadcast 0.0.0.0
ether 00:0c:29:f8:03:38txqueuelen 1000(Ethernet)
lo: flags=73<UP,LOOPBACK,RUNNING>mtu 65536
inet 127.0.0.1netmask 255.0.0.0
inet6 ::1prefixlen 128scopeid 0x10<host>
looptxqueuelen 0(Local Loopback)
RX packets 0bytes 0 (0.0 B)
RX errors 0dropped 0overruns 0frame 0
TX packets 0bytes 0 (0.0 B)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
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