$TTL	604800
@	IN	SOA	ns.oracle-lab.com. admin.oracle-lab.com. (
		12		; Serial
		604800		; Refresh
		86400		; Retry
		2419200		; Expire
		604800	)	; Negative cache TTL

@		IN	NS	ns.oracle-lab.com.
ns		IN	A	172.16.0.254

db1       	IN	A	172.16.0.1
db2       	IN	A	172.16.0.2
db1-vip   	IN	A	172.16.0.3
db2-vip   	IN	A	172.16.0.4
db-cluster	IN	A	172.16.0.5