My Windows 2000 DNS server has started playing up recently and I was looking for some suggestions.
Certain host records have been deleted for no apparent reason and there are no obviously relevant errors in the event logs. The reverse pointer entry remains intact.
THE DNS service is Active Directory integrated and has a handfull of other servers and it is the addresses for some of these servers that are being deleted from DNS.
Each of our server has 3 NICS which are on 3 DIFFERENT LANS, one is a workstation LAN, no problems there. the second is a primary interserver LAN (this is where the record is being deleted)and the third is a secondary interserver lan which is just there as a manual backup.
The server that is having it's DNS host record deleted has the following host records and associated pointer records
10.0.1.20 Database1 - Workstation LAN
10.0.2.20 Database1 - PrimaryInterserver LAN
10.0.3.20 Database1 - SecondaryInterserver LAN
So When I ping Database1 from a workstation on the 10.0.1 lan I correctly get it returning 10.0.1.20.
When I ping Database1 from a server on the 10.0.3 lan I correctly get it returning 10.0.3.20.
BUT when I ping Database1 from a server on the 10.0.2 lan I get it returning 10.0.3.20 instead of 10.0.2.20
When I check the DNS server I find that the host record for Database1 10.0.3.20 has been deleted.
The host records are for virtual SQL servers and thus far this is the only one affected. I checked the database Cluster and can't see any obvious problems there.
This has worked well for 5 years, it is strange that it should go wrong now.
Any ideas would be appreciated.
AJ
Certain host records have been deleted for no apparent reason and there are no obviously relevant errors in the event logs. The reverse pointer entry remains intact.
THE DNS service is Active Directory integrated and has a handfull of other servers and it is the addresses for some of these servers that are being deleted from DNS.
Each of our server has 3 NICS which are on 3 DIFFERENT LANS, one is a workstation LAN, no problems there. the second is a primary interserver LAN (this is where the record is being deleted)and the third is a secondary interserver lan which is just there as a manual backup.
The server that is having it's DNS host record deleted has the following host records and associated pointer records
10.0.1.20 Database1 - Workstation LAN
10.0.2.20 Database1 - PrimaryInterserver LAN
10.0.3.20 Database1 - SecondaryInterserver LAN
So When I ping Database1 from a workstation on the 10.0.1 lan I correctly get it returning 10.0.1.20.
When I ping Database1 from a server on the 10.0.3 lan I correctly get it returning 10.0.3.20.
BUT when I ping Database1 from a server on the 10.0.2 lan I get it returning 10.0.3.20 instead of 10.0.2.20
When I check the DNS server I find that the host record for Database1 10.0.3.20 has been deleted.
The host records are for virtual SQL servers and thus far this is the only one affected. I checked the database Cluster and can't see any obvious problems there.
This has worked well for 5 years, it is strange that it should go wrong now.
Any ideas would be appreciated.
AJ