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Job Management Partner 1/Performance Management - Agent Option for Virtual Machine Description, User's Guide and Reference
This subsection explains the prerequisite conditions, required information, and notes you must be aware of before you install and set up PFM - Agent for Virtual Machine.
- Organization of this subsection
- (1) Prerequisite conditions
- (2) Information necessary for setting up PFM - Agent for Virtual Machine to run on a logical host
- (3) Notes on using PFM - Agent for Virtual Machine to cause a failover on a logical host
- (4) Note on version upgrading of the logical host
(1) Prerequisite conditions
To use PFM - Agent for Virtual Machine in a cluster system, the following prerequisite conditions must be satisfied.
(a) Cluster system
Make sure that the following conditions are satisfied:
- The cluster system is being controlled by cluster software.
- The cluster software is set to control startup and termination of any PFM - Agent for Virtual Machine instances that run on a logical host.
- Note
- If the application error message box is displayed in Dr. Watson, it may prevent a failover, and therefore you must suppress error notification that uses the message box. For details about how to suppress error notification, see the OS documentation. Note that if you suppress error notification, the collection of information when an application error occurs may be affected.
- In Windows Server 2003, when an application error occurs, a dialog box for reporting the error to Microsoft is displayed. If this dialog box is displayed, it may prevent a failover, and therefore you must suppress error notification. For details about how to suppress error notification, see the OS documentation.
Make sure that the following conditions are satisfied:
- Each logical host must have a shared disk, and it must be possible to switch from the executing node to a standby node.
- The shared disk must be physically connected to each node via Fibre Channel or SCSI. Performance Management does not support a configuration in which a network drive or a disk replicated via a network is used as a shared disk.
- Even if a problem causes a process that is using the shared disk to remain when a failover occurs, it must be possible to forcibly take the shared disk offline and enable a failover using a means such as cluster software.
- If multiple PFM products are used on a single logical host, the folder name of the shared disks must be the same. You can change the storage destination of the Store database and store it in a different folder on the shared disk.
(c) Logical host names and logical IP addresses
Make sure that the following conditions are satisfied:
- Each logical host must have a logical host name, and each logical host name must have a corresponding logical IP address, and it must be possible to switch from the executing node to a standby node.
- The logical host names and logical IP addresses must be set in the hosts file and name server.
- If DNS is used, a host name excluding the domain name, not the FQDN name, must be used as the logical host name.
- Physical host names and logical host names must be unique within the system.
- Note
- Do not specify a physical host name (host name displayed by the hostname command) for the logical host name. Otherwise, communication may not be processed correctly.
- A logical host name can use from 1 to 32 bytes of alphanumeric characters. Spaces and the following symbols cannot be specified:
/ \ : ; * ? ' " < > | & = , .
- You cannot specify a logical host name that begins with the character string localhost, an IP address, or a hyphen (-).
(2) Information necessary for setting up PFM - Agent for Virtual Machine to run on a logical host
To set up PFM - Agent for Virtual Machine to run on a logical host, you need the types of information listed in the table below in addition to the environment information normally necessary for setting up PFM - Agent for Virtual Machine.
Table 3-2 Information necessary for setting up PFM - Agent for Virtual Machine to run on a logical host
Item Example Logical host name jp1-halvm Logical IP address 172.16.92.100 Shared disk S:\jp1 When multiple Performance Management programs are set to run on a single logical host, they must use the same folder on the shared disk.
To estimate the size necessary for the shared disk, see A. Estimating System Requirements.
(3) Notes on using PFM - Agent for Virtual Machine to cause a failover on a logical host
If you are using a system configuration in which PFM - Agent for Virtual Machine runs on a logical host, decide whether a failover should occur on the entire logical host when an error occurs in PFM - Agent for Virtual Machine.
If an error in PFM - Agent for Virtual Machine causes a failover on the entire logical host, business applications that are running on the same logical host as PFM - Agent for Virtual Machine will also fail over. This may adversely affect operations.
(4) Note on version upgrading of the logical host
When you upgrade the version of PFM - Agent for Virtual Machine running on the logical host, you need to place the shared disk online on either the executing node or the standby node.
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