Foglight for Hyper-V 5.8.2 - User and Reference Guide

Cluster monitoring

A cluster object is a group of Hyper-V servers that share common storage resources and network configurations.

To review data collected about a specific cluster or all clusters, make your selection in the Quick-View.

Clusters view

The Clusters view is a tree view. It lists the clusters that exist in your environment and shows their state.

This view appears in the Quick-View on the left when you select the Clusters tile in the Virtual Environment view.

Selecting the All Clusters node displays overall resource utilization for all clusters in your integrated system and the elements that consume the highest amount of system resources in the Cluster Summary (All Clusters) view on the right. Similarly, selecting a cluster node shows cluster-specific metrics in the Cluster Summary view on the right.

Summary - All Clusters view

The Summary - All Clusters view displays overall resource utilization information for a group of clusters, and shows the elements that consume the highest amount of system resources.

This view appears in the Quick-View on the left when you select All Clusters in the Clusters view.

This view is made up of the following embedded views:

Table 12. Alarms

Description	Lists the alarms generated against the monitored system.
Data displayed	• Alarm Message. An explanation about why the alarm occurred.
	• Severity. Indicates the alarm severity: Warning, Critical, or Fatal.
	• Time. The time at which the alarm was generated.
Where to go next	Drill down on:
	• Alarm Message. Links to the Cluster Summary view.
	• Severity. Displays the Alarm dialog box, showing additional information about the alarm. For more information about alarms in Foglight, see the Foglight User Help. Figure 17. Alarm dialog box
	• Time. Links to the Cluster Summary view.

Table 13. Top CPU Consumers

Description	Shows the top three clusters with the highest average CPU utilization.
Data displayed	• Clusters. The name of the clusters that are the top three CPU utilization.
	• CPU Utilization. The total percentage of CPU utilization the top three CPU consumers spend on executing system code and user programs, during the selected time range.
Where to go next	Drill down on:
	• Clusters. For more information, see Hyper-V Explorer Summary tab.
	• CPU Utilization (in the graph). Displays the Top Clusters - CPU Utilization dialog box. Figure 18. Top Clusters - CPU Utilization dialog box

Table 14. Top Disk Consumers

Description	Shows the top three clusters with the highest average disk utilization.
Data displayed	• Clusters. The name of the clusters that are the top three disk utilization.
	• Disk Transfer Rate. The rate at which the top three disk consumers read or write data to the disk during the selected time range.
Where to go next	Drill down on:
	• Clusters. For more information, see Hyper-V Explorer Summary tab.
	• Disk Transfer Rate (in the graph). Displays the Top Clusters - Disk Transfer Rate dialog box. Figure 19. Top Clusters - Disk Transfer Rate dialog box

Table 15. Top Memory Consumers

Description	Shows the top three clusters with the highest average memory utilization.
Data displayed	• Clusters. The name of the cluster that are the top three memory consumers.
	• Memory Consumed. The amount of memory the top three memory consumers use during the selected time range.
Where to go next	Drill down on:
	• Clusters. For more information, see Hyper-V Explorer Summary tab.
	• Memory Consumed. Displays the Top Clusters - Memory Consumed dialog box. Figure 20. Top Clusters - Memory Consumed dialog box

Table 16. Top Network Consumers

Description	Shows the top three clusters that are consuming most network bandwidth.
Data displayed	• Clusters. The name of the cluster that are the top three network consumers.
	• Network Transfer Rate. The rate at which the top three network consumers transfer data to or from the network during the selected time range.
Where to go next	Drill down on:
	• Clusters (in the table). For more information, see Hyper-V Explorer Summary tab.
	• Network Transfer Rate. Displays the Top Clusters - Network Transfer Rate dialog box. Figure 21. Top Clusters - Network Transfer Rate dialog box

Cluster Summary view

The Cluster Summary view shows the overall resource utilization and the amounts of system resource consumption for a server cluster.

This view appears in the Quick-View on the left when you select a cluster in the Clusters view.

This view is made up of the following embedded views:

Table 17. Alarms

Description	Lists the alarms generated against the selected cluster.
Data displayed	• Alarm Message. An explanation about why the alarm occurred.
	• Severity. Indicates the alarm severity: Warning, Critical, or Fatal.
	• Time. The time at which the alarm was generated.
Where to go next	Drill down on:
	• Alarm Message, Severity, or Time. Displays the Alarm dialog box, showing additional information about the alarm. For more information about alarms in Foglight, see the Foglight User Help. Figure 23. Alarm dialog box

Table 18. Related Items

Description	Shows the numbers and states of the cluster, servers, and virtual machines, all related to the selected cluster.
Data displayed	• Cluster. The name of the selected cluster, followed by the counts of all alarms associated with the cluster, broken down by the alarm state (Normal, Warning, Critical, Fatal).
	• Server. The number of servers that belong to the selected cluster, followed by the counts of all alarms associated with those servers, broken down by the alarm state (Normal, Warning, Critical, Fatal).
	• Virtual machines. The number of the virtual machines that are running on the physical servers that belong to the selected cluster, followed by the counts of all alarms generated against those virtual machines, broken down by the alarm state (Normal, Warning, Critical, Fatal).
Where to go next	Drill down on:
	• Alarm count. Displays a dwell that shows the objects against which alarms are generated. Figure 24. Object alarms dwell
	• Alarm count or Cluster. Displays the Clusters dwell, showing the name and state of the selected cluster. Figure 25. Clusters dwell
	• Server. Displays the Servers dwell, showing the names and states of the servers that belong to the selected cluster.
	• Virtual Machines. Displays the Virtual Machines dwell, showing the names and states of the virtual machines that are running on the physical servers that belong to the selected cluster.

Table 19. Resource Utilizations

Description	Shows the resource consumption for the selected cluster, broken down into four simple views.
Data displayed	• CPU Load. The current percentage of the CPU load, used by the servers that belong to the selected cluster to execute system code and user programs, based on the combined CPU capacity.
	• CPU Utilization, % Used. The percentage of the CPU utilization used by the servers that belong to the selected cluster to execute system code and user programs, during the selected time period.
	• Disk I/O. The current disk I/O rate for all servers that belong to the selected cluster.
	• Disk Utilization, Read Rate. The rate at which all servers that belong to the cluster read data from the disk, during the selected time period.
	• Disk Utilization, Write Rate. The rate at which data is written to the disks of all servers that belong to the cluster, during the selected time period.
	• Memory Usage. The current percentage of the average memory usage by all servers that belong to the selected cluster, based on the total memory capacity.
	• Memory Utilization, % Used. The percentage of the available memory that is used by all servers that belong to the cluster during the selected time period.
	• Network I/O. The current rate at which data is transferred from all servers that belong to the selected cluster to and from the network.
	• Network Utilization, Receive Rate. The rate at which all servers that belong to the selected cluster receive data from the network, during the selected time period.
	• Network Utilization, Send Rate. The rate at which data is transferred from all servers that belong to the selected cluster to the network, during the selected time period.
Where to go next	Drill down on:
	• CPU Load spinner. Displays the CPU Load dialog box. Figure 26. CPU Load dialog box
	• CPU Utilization graph. Displays the CPU Utilization dialog box. Figure 27. CPU Utilization dialog box
	• Disk I/O spinner. Displays the Disk I/O dialog box. Figure 28. Disk I/O dialog box
	• Disk Utilization graph. Displays the Disk Utilization dialog box. Figure 29. Disk Utilization dialog box
	• Memory Usage spinner. Displays the Memory Usage dialog box. Figure 30. Memory Usage dialog box
	• Memory Utilization graph. Displays the Memory Utilization dialog box. Figure 31. Memory Utilization dialog box
	• Network I/O spinner. Displays the Network I/O dialog box. Figure 32. Network I/O dialog box
	• Network Utilization graph. Displays the Network Utilization dialog box. Figure 33. Network Utilization dialog box