HP B6960-90078 manual DNS Resolution Problem, 566

Troubleshooting

Troubleshooting Networking and Communication

Table 12-2	Data Protector Components Name Resolution
		Host A	Host B
		MoM Server Host	Media Agent Client Host
		MoM Server Host	Cell Manager Host
	DNS Resolution Problem
	Test DNS resolution among hosts using the omnicheck command. Refer
	to the “Verifying DNS Connections within Data Protector Cell” section in
	the HP OpenView Storage Data Protector Installation and Licensing
	Guide and to omnicheck man page for more information on how to use
	the command.
	Enter the following command:
	omnicheck -dns
	This will check all DNS connections needed for normal Data Protector
	operating.
Problem	If the response to the omnicheck command is:
	<client_1> connects to <client_2>, but connected system
	presents itself as <client_3>
	The message may occur when the hosts file on client_1 is not correctly
	configured or the hostname of the client_2 does not match its DNS
	name.
	If the response to the omnicheck command is:
	<client_1> failed to connect to <client_2>
	The message may occur when the hosts file on client_1 is not correctly
	configured or client_2 is unreachable (for example, disconnected).
Action	Consult your network administrator. Depending on how your
	environment is configured to perform name resolution, you may need to
	resolve this problem either in your DNS configuration or by editing the
	hosts file located in the following directories:
	•	On Windows: <%SystemRoot%>\System32\drivers\etc
	•	On UNIX: /etc

566 Chapter 12