pdns 域名绑定 IP 故障备忘

当前环境

a.v.com  1.1.1.1
b.v.com  2.2.2.2

希望绑域名  y.v.com  能够嗟系 1.1.1.1 及 2.2.2.2 以实现 DNS 负载均衡

错误做法

mysql> insert into records (domain_id, name, type, content, ttl) values ( 1,'y.v.com', 'CNAME','a.v.com,'360');
Query OK, 1 row affected (0.00 sec)

mysql> insert into records (domain_id, name, type, content, ttl) values ( 1,'y.v.com', 'CNAME','b.v.com','360');
Query OK, 1 row affected (0.00 sec)

正确做法

mysql> insert into records (domain_id, name, type, content, ttl) values ( 1,'y.v.com', 'A','1.1.1.1','360');
Query OK, 1 row affected (0.00 sec)

mysql> insert into records (domain_id, name, type, content, ttl) values ( 1,'y.v.com', 'A','1.1.1.2','360');
Query OK, 1 row affected (0.00 sec)

mysql> update records set content='pdns.vclound.com admin.pdns.vclound.com 2609 1200 7200 64800' where id=1;
Query OK, 1 row affected (0.00 sec)

客户端测试效果如下

[root@hh-yun-puppet-129021 named]#  nslookup  yum.vclound.com
Server:         10.199.129.21
Address:        10.199.129.21#53

Name:   yum.vclound.com
Address: 10.199.129.22
Name:   yum.vclound.com
Address: 10.199.129.21