Hitachi

JP1 Version 12 for Windows Systems JP1/Performance Management - Agent Option for Platform Description, User's Guide and Reference


5.2.2 Effects of PFM - Manager stopping, and corrective action

The stopping of PFM - Manager affects the entire Performance Management system.

PFM - Manager provides centralized management of agent information for the instances of PFM - Agent for Platform running on all the nodes. It also controls both alarm event notifications when thresholds are exceeded during performance monitoring by PFM - Agent for Platform, and the execution of actions based on alarm events.

The following table describes how PFM - Agent for Platform is affected when PFM - Manager is stopped, and the corrective action to be taken.

Table 5‒1: Effects of PFM - Manager stopping

Program name

Effects

Action

PFM - Agent for Platform

If PFM - Manager is stopped while PFM - Agent for Platform is running, the following occurs:

  • Collection of performance data continues.

  • Because alarm events are not reported to PFM - Manager, the alarm events for each alarm definition are saved. PFM - Agent for Platform retries notification until PFM - Manager starts. When the number of saved alarm events exceeds 3, the oldest alarm event is overwritten. If PFM - Agent for Platform stops, the saved alarm events are deleted.

  • Notifications of alarm status already sent to PFM - Manager are reset when PFM - Manager restarts. After the reset, PFM - Manager checks the status of PFM - Agent for Platform and then refreshes the alarm statuses.

  • An attempt to stop PFM - Agent for Platform takes time because notification of this event cannot be sent to PFM - Manager.

Start PFM - Manager. Active instances of PFM - Agent for Platform can continue to operate. Because alarms might not be notified as expected, after PFM - Manager has been recovered, check the KAVE00024-I messages that have been output to the common message log.

Evaluate your operating method based on how the stopping of PFM - Manager affects the system. Apart from system crashes, events such as configuration changes or maintenance might require you to stop PFM - Manager. We recommend that you perform maintenance at a time that least affects operations.