Intel MPCMM0001 manual Process Monitoring and Integrity

Process Monitoring and Integrity

6.7.9Excessive Restarts, Failed Escalate Failover/Reboot, Non- Critical

In this scenario PMS detects a process fault. The severity of the process is configured to a value that is not critical. The configured recovery action is: restart the process. However, the PMS also detects that the process has exceeded the threshold for excessive process restarts. Therefore, the PMS will execute the escalation action. The configured escalation recovery action is: failover to the standby CMM and upon successfully executing the failover, reboot the now standby CMM.

The failover recovery action is unsuccessful (standby is not available, etc.). The process being monitored is not of a critical severity and therefore the reboot of the CMM will not be performed.

Table 14. Excessive Restarts, Failed Escalate Failover/Reboot, Non-Critical

Description		Event String		UID	Assert	Severity
PMS detects a faulty process. The	Process existence fault;
	attempting recovery		or
mechanism (existence, thread	Thread watchdog fault; attempting
watchdog, or integrity) used to detect				#	Assert	Configure
	recovery	or
the fault will determine which of the
	Process integrity fault; attempting
event type strings will be used.
	recovery
The recovery action specified is	Attempting process restart			#	N/A	Configure
"restart process"	recovery action
PMS detects that the process has	Recovery failure due to excessive			#	N/A	Configure
been restarted excessively.	restarts
The escalated recovery action	Attempting failover & reboot			#	N/A	Configure
specified is "failover and reboot"	escalated recovery action
	The existing code generates the
	events for failover. They are
PMS executes a failover.	separate from process monitoring			-	N/A	N/A
	events and are not described
	here.
PMS detects that it is still running on
the active CMM. The process is not	Failover & reboot escalated			#	N/A	Configure
critical and therefore the reboot	recovery failure
operation will not be performed.
No attempt will be made to recover	Process existence fault;
the process. The PMS will stop
	monitoring disabled		or
monitoring the process.
	Thread watchdog fault; monitoring			#	Assert	Configure
See Section 6.7.11, “Process
	disabled	or
Administrative Action” on page 53, for
	Process integrity fault; monitoring
information about how to re-enable
	disabled
monitoring and de-assert the event.

6.7.10Excessive Restarts, Failed Escalate Failover/Reboot, Critical

In this scenario, PMS detects a process fault. The severity of the process is configured as critical. The configured recovery action is: restart the process. However, the PMS also detects that the process has exceeded the threshold for excessive process restarts. Therefore, the PMS will execute the escalation recovery action. The configured escalation recovery action is: failover to the standby CMM and upon successfully executing the failover, reboot the now standby CMM. The failover

52MPCMM0001 Chassis Management Module Software Technical Product Specification