Getting Started with vFabric Hyperic v.5.7 - VMware

Overloaded BackendIf the vFabric Hyperic database cannot process metrics at the rate it receives them, resourcesthat are available may be incorrectly shown as unavailable.You can view vFabric Hyperic Server process statistics, as well as load and utilization data -load, process, system and JVM memory, and so on - on the HQ Health page.Based on your load, it may be appropriate to tune vFabric Hyperic Server, the vFabric Hypericdatabase, or both. For more information, see Scaling and Tuning vFabric Hyperic Performance.Important: First and foremost: run the vFabric Hyperic database on dedicated hardware.Competition for system resources can slow down metric processing.Overloaded AgentIf an agent's queue of metrics grows to a certain level over a period of time, the followingwarning message is written to the agent.log file:The Agent is having a hard time keeping up with the frequency of metrics taken.Consider increasing your collection interval.To investigate, you can configure the agent to report the "Total Time Spent Fetching Metrics perMinute" metric — if the agent spends more than half its time fetching metrics — it isoverloaded.You can alleviate the problem by Increasing metric collection intervals — For most metrics, thedefault is every 5 or 10 minutes. You can change the collection interval for all metrics collectedfor a resource type on the Administration > Monitoring Defaults page for the resource type.Want to Change a Whole Bunch of Metric Collection Intervals?If you want to change metric templates in bulk, or without using the vFabric Hyperic userinterface, you can change metric collection settings - including collection intervals - for aresource type with the HQApi metricTemplate command. You can use themetricTemplate sync option from the command line or in a script, as desired. For moreinformation, see HQApi metricTemplate command section in vFabric Hyperic WebServices API.Try to redistribute loadIf an agent that logs metric volume warnings is monitoring a large number of remoteservices over the network (for example, HTTP, FTP, SNMP, or another service type whoseprotocol the agent supports), you can spread the load around — configure a different agentto monitor some of the network services. You can compare the agent loads on the Agentstab of HQ Health.112