[root@Client ~]# ip a s ens33
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:86:24:c1 brd ff:ff:ff:ff:ff:ff
inet 192.168.153.27/24 brd 192.168.153.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe86:24c1/64 scope link
valid_lft forever preferred_lft forever
2. 在DR上配置DIP和VIP
[root@DR ~]# ip addr add 192.168.153.200/32 dev lo
[root@DR ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet 192.168.153.200/32 scope global lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:97:c3:66 brd ff:ff:ff:ff:ff:ff
inet 192.168.153.20/24 brd 192.168.153.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe97:c366/64 scope link
valid_lft forever preferred_lft forever
[root@RS1 ~]# ip addr add 192.168.153.200/32 dev lo
[root@RS1 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet 192.168.153.200/32 scope global lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:2d:e0:d6 brd ff:ff:ff:ff:ff:ff
inet 192.168.153.22/24 brd 192.168.153.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe2d:e0d6/64 scope link
valid_lft forever preferred_lft forever
RS2
[root@RS2 ~]# ip addr add 192.168.153.200/32 dev lo
[root@RS2 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet 192.168.153.200/32 scope global lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:9b:a5:b7 brd ff:ff:ff:ff:ff:ff
inet 192.168.153.25/24 brd 192.168.153.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe9b:a5b7/64 scope link
valid_lft forever preferred_lft forever
5. 配置路由信息
[root@DR ~]# route add -host 192.168.153.200 dev lo
[root@RS1 ~]# route add -host 192.168.153.200 dev lo
[root@RS2 ~]# route add -host 192.168.153.200 dev lo
6. 在RS上配置MySQL
[root@RS1 ~]# yum -y install mariadb*
[root@RS1 ~]# systemctl enable --now mariadb
[root@RS1 ~]# mysql -e 'create database RS1' //创建库
[root@RS1 ~]# mysql
MariaDB [(none)]> grant all on *.* to root@'192.168.153.%' identified by '123456';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
[root@RS1 ~]# mysql -e 'show databases' |wc -l
5 //RS1上有5个库
[root@RS2 ~]# yum -y install mariadb*
[root@RS2 ~]# systemctl enable --now mariadb
[root@RS1 ~]# mysql
MariaDB [(none)]> grant all on *.* to root@'192.168.153.%' identified by '123456';
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)
[root@RS2 ~]# mysql -e 'show databases' |wc -l
4 //RS2上有4个库