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Foglight for VMware 5.8.3 - User Guide (Lite version)

Using VMware Monitoring in Foglight Evolve Cloud Reference Appendix: Alarm Messages Appendix: Metrics

Rules

VMware Monitoring in Foglight® Evolve Cloud allows you to create flexible rules that can be applied to complex, interrelated data from multiple sources within your distributed system. You can associate several different actions with a rule, configure a rule so that it does not fire repeatedly, and associate a rule with schedules to define when it should and should not be evaluated.

Different types of data can be used in rules, including registry variables, raw metrics, derived metrics, and topology object properties.

There are two types of rules in VMware Monitoring in Foglight Evolve Cloud: simple rules and multiple-severity rules. A simple rule has a single condition, and can be in one of three states: Fire, Undefined, or Normal. A multiple-severity rule can have up to five severity levels: Undefined, Fatal, Critical, Warning, and Normal.

Rule conditions are regularly evaluated against monitoring data (metrics and topology object properties collected from your monitored environment and transformed into a standard format). Therefore, the state of the rule can change if the data changes. For example, if a set of monitoring data matches a simple rule’s condition, the rule enters the Fire state. If the next set does not match the condition, the rule exits the Fire state and enters the Normal state.

A rule condition is a type of expression that can be true or false. When it evaluates to true, the rule is said to fire, causing any actions that are associated with the rule or severity level to be performed. You can configure a rule to perform one or more actions upon entering or exiting each state. When a multiple-severity rule fires, an alarm also appears in VMware Monitoring in Foglight Evolve Cloud.

For more information see the VMware Monitoring in Foglight Evolve Cloud Administration and Configuration Help.

VMware Monitoring in Foglight Evolve Cloud provides an effective monitoring solution for the VMware infrastructure. The rules included in VMware Monitoring in Foglight Evolve Cloud alert you to virtual infrastructure problems.

When service degradations are detected, VMware Monitoring in Foglight Evolve Cloud sends alerts to the event console. Optionally, VMware Monitoring in Foglight Evolve Cloud can be configured to send emails, pager messages, or perform other actions you define. Performance data can be viewed, analyzed and reported using VMware Monitoring in Foglight Evolve Cloud.

VMware Monitoring in Foglight Evolve Cloud includes a number of predefined rules that capture the expert knowledge of our virtualization specialists and are used to monitor the health of your virtual infrastructure. VMware Monitoring in Foglight Evolve Cloud allows you to modify these rules or create your own flexible rules that can be applied to complex, interrelated data from multiple sources within your distributed system.

In this , rule descriptions are organized into logical groupings. To see a rule description, select the appropriate grouping from the s listed below.

Many of the rules listed and described in this chapter have thresholds (standard deviations, utilization percentages, etc.) defined within them. Those thresholds are default values predefined in the registry.

VMware Monitoring in Foglight Evolve Cloud includes the following groups of rules:

Cluster Rules

This section describes the cluster rule:

VMW Cluster Disk IO

This rule monitors for spikes and dramatic drops in disk IO for a cluster. This rule is disabled by default, and can be enabled as required.

VMWCluster

Table 52. Rule Definition

The disk usage is no more than 2.2 standard deviations (NumSTDevs) from the mean disk usage.

Normal

None

The disk usage is more than 2.2 but no more than 2.8 standard deviations from the mean disk usage.

Warning

None

The disk usage is more than 2.8 standard deviations from the mean disk usage.

Critical

None

Datacenter Rules

This section describes the datacenter rule. This rule is disabled by default, and can be enabled as required.

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