Updating the DNS server after recycling the AMI

This procedure describes how to update the local DNS Server to use the new host name and public IP Address of the Amazon EC2 after recycling the AMI, and publishing Control-M/EM on the new public DNS name.

Amazon EC2 instance host names are derived from the IP address that is dynamically assigned to the instance at startup. Unless the Amazon EC2 instance is allocated with an Elastic IP address (static IP address), the instance will be assigned to a new public IPv4 address after a server restart.

To update the DNS server:

1. Stop Control-M/Enterprise Manager Configuration Agent.
2. Launch the Windows task manager, ensure all the following processes are stopped:
   • emwa.exe
   • emcms.exe
   • emcmsg.exe
   • emgtw.exe
   • emguisr.exe
   • emmaintag.exe
   • eaming_service.exe
3. Open the cmd.exe console and navigate to path to:

   <Drive:>\Program Files\BMC Software\Control-M EM 9.0.00\Default\bin>

4. Run the command updateEmPublicHost.bat to update the Control-M/EM with the new IP Address
5. Start Control-M/Enterprise Manager Server as per normal procedure.