Optionally Enable DNS Registration for Provisioned IP Addresses

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Optional: Enable Network Configuration Assistant to update DNS dynamic to a domain name server for host-name-to-IP-address mappings.

Prerequisites:
  • An RFC 2136-compliant domain name server to be the authoritative name server for one or more DNS zones.
  • Dynamic update capable zone definitions in this name server.
  • Delegation of these zones from the zone’s parent zone.
  • Optionally, Transaction Signatures (TSIGs) defined for these zones for secure dynamic update:
    • If you create TSIG keys for these zones, FTP both the .key and .private keys to a z/OS® UNIX directory where the z/OSMF server is running.
    • Under z/OS UNIX, edit the .private key and delete the last line that starts with "Bits". Leaving this line in makes the file incompatible with the z/OS version of nsupdate.
    • From z/OS UNIX, using a superuser ID, change the owner and group of both of the key files such that the z/OSMF started task ID is the owner of the files, for example:
      • chown izusvr:izuadmin Kzcloud1.+157+59596.key
      • chown izusvr:izuadmin Kzcloud1.+157+59596.private
    • Ensure the file permission bits of both files are 400.
    • Start the name server.
  • A network resource allocation provisioner that supplies unique host names on IP address REST provisioning requests.
  1. In Network Configuration Assistant, in the Cloud technology, click the DNS Zones tab. Network Configuration Assistant screen capture
  2. Click the Actions list and select New. Network Configuration Assistant screen capture
  3. In the Name field, enter a name.
  4. In the Name Server Address field, enter the IP address of the name server that is configured in the Prerequisites section.
  5. Optional: Add a description.
  6. Enter the name of the DNS zone that is configured in the name server in the Zone Name field, for example, 'dynamic.raleigh.ibm.com'.
  7. If the zone configured in the name server is configured with a TSIG key, enter the z/OS UNIX path of the TSIG key in the TSIG File field. This is the z/OS UNIX path where you downloaded the TSIG key in the prerequisites section.
  8. Optional: Enter a value in the Time To Live field.
  9. Click Save to return to the Cloud perspective.
  10. Click the IP Address Allocation Ranges tab. Network Configuration Assistant screen capture
  11. Select an IP address allocation range to use for DNS registration and associate it with a DNS zone. Only the IP address allocation ranges that have no IP addresses currently allocated from that range can be associated with a DNS zone.
  12. From the Actions list, select Modify.
  13. From the DNS Zone list, select the name of the DNS zone that you entered.Network Configuration Assistant screen capture
  14. Click Save. Repeat this step for other IP address allocation ranges to be associated with a DNS zone.

Any IP addresses provisioned from the IP Address Allocation Range configured above and which specify a unique host name in the request for its assigned DNS zone will have their host-name-to-IP-Address-mapping dynamically updated in the specified DNS server. For example, if the zone name is 'dynamic.raleigh.ibm.com' and the host name in the IP address provisioning request is 'host01', DNS queries for 'host01.dynamic.raleigh.ibm.com' would resolve to the IP address that was provisioned for that provisioned IP address.

Parent topic: Getting Started Tutorial - Cloud