5.3.3 Specifying and changing the monitoring host name in a Performance Management system
The Performance Management system uses service IDs to run the system. For the service IDs, the Performance Management system uses the host names (real host names) obtained from the OS by using the uname -n command. Therefore, to change the physical host name on a server that has PFM - Manager, PFM - Agent, or PFM - RM installed, you must perform the procedure described in 5.3.8 Changing the physical host name of a server after operation has started.
To avoid this, use the function for setting monitoring host names. This function enables you to use host names (alias names) that do not depend on the host names obtained by the uname -n command to create service IDs, eliminating the need for changing the physical host name. Therefore, use the function for setting monitoring host names in an environment where a server's host name might be changed or multiple hosts have the same real name.
A host name that is used for the service ID of the Performance Management system is called a monitoring host name.
- Note
-
If the function for setting monitoring host names is not used and PFM - Agent for Platform (UNIX) is installed on a host whose host name obtained by the uname -n command is HostA, the Agent Collector's service ID would be UA1HostA. If you use the product name display function, the service ID would be HostA<UNIX>.
If PFM - Agent for Platform (UNIX) is installed on a host whose host name has been set to aliasA by using the function for setting monitoring host names, the Agent Collector's service ID would be UA1aliasA. If you use the product name display function, the service ID would be aliasA<UNIX>.
To obtain the monitoring host name used currently by the PFM - Manager, PFM - Agent, or PFM - RM host, as well as the method used to obtain the monitoring host name, execute the command shown below on the corresponding host. In this command, hostmode represents the method used to obtain the monitoring host name and hostname represents the monitoring host name.
jpcconf host hostmode -display
- Example
-
• When the function for setting monitoring host names is not used
hostmode : uname
hostname : hostA
• When the function for setting monitoring host names is used
hostmode : alias
hostname : aliasA
|
Method for acquiring a monitoring host name |
Monitoring host name |
|---|---|
|
uname |
Real host name (value obtained by the uname -n command) |
|
alias |
Alias name |
To set an alias name for the monitoring host name, you must execute the jpcconf host hostmode command to set hostname or alias as the method used to obtain the monitoring host name.
For details about the jpcconf host hostmode command, see the chapters that describe commands in the manual JP1/Performance Management Reference.
- Note:
-
Do not execute any other commands while executing the jpcconf host command. If you execute another command, both the jpcconf host command and the executed command might fail.