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Foglight Capacity Director 7.1.0 - User Guide

Using Foglight Capacity Director Getting Started Tab Current Capacity Tab Resource Utilization Tab Scenario Modeler Tab Server Purchase Tab Report Tab Performance Tuning Tab Changes and DRS Rules Tab Infrastructure Organizations Tab

Manual Placement

To perform a manual placement:
1
In the Scenario Modeler pane, select a resource that you want to balance under Step 1: Select a resource for balance.
2
Select Manual Placement under Step 2: Select a placement approach.
3
Select an organization from the available organizations.
Or
Click >> Link to Infrastructure Organizations to add a new organization as needed. For more information, see Infrastructure Organizations Tab.
The available clusters list is refreshed automatically.
4
Select a cluster that you want to rebalance as needed, and click Next.
The Scenario Modeler pane is updated to display the following information:
•
Balance Scores: The original Balance Score before the manual placement. For more information, see Balance Score.
•
Rebalance Scores: The updated Balance Score if the manual placement is deployed.
•
List of virtual machines available in the source cluster. For more information, see Hog Score.
•
Resource utilization before/after the movement in the source cluster.
•
List of virtual machines available in the target cluster.
•
Resource utilization before/after the movement in the target cluster.
5
From the list of virtual machines available in the source cluster, select the virtual machines that you want to move to the target cluster, and click Move In.
Or
From the list of virtual machines available in the target cluster, select the virtual machines that you want to move back to the source cluster, and click Move Out.
6
Click Proceed to Summary.
7
The Scenario Modeler pane is updated to display the following information:
•
The Rebalance Summary view
•
Balance Scores: The original Balance Score before the manual placement.
•
Rebalance Scores: The updated Balance Score if the manual placement is deployed.
•
Source Clusters: The clusters from which virtual machines are moved.
•
Number of moved VMs: The number of the virtual machines to be moved to the Target Clusters.
•
Moved VMs: The list of virtual machines to be moved to the Target Clusters.
•
Target Clusters: The clusters to which virtual machines are moved.
•
Yielding Metrics: The resource utilization before/after the manual placement, and the increase percent of resources.
•
Conflicts: The list of conflicts that will be occurred if the manual placement is deployed. The types of conflicts include affinity rules violation, organization conflicts, and unavailable network accesses.
8
Click Start Over if you want to redo the resource rebalance.
Click Model Change to model the manual placement. For more information, see Modeling Placement.
Click Deploy Change to execute the manual placement as Foglight Capacity Director recommends. For more information, see Deploying Placement.
Click Edit Assignment to return the Manual Virtual Machine Assignment view, and redo the manual placement from Step 4.
Hog Score

Hog Score can be regarded as the health score. It is scaled from 0 to 100 and helps achieve more predictable results when performing the rebalance. If Hog Score of a virtual machine is too low and is displayed in red, Foglight for VMware recommends moving this virtual machine to other clusters.

Resource utilization of a virtual machine and free capacity of a cluster are two factors that impact the Hog Score. For example, the Hog Score is low (unhealthy) if CPU utilization of a virtual machine is much higher than other resource utilizations in the same cluster. The Hog Score is high (healthy) if the CPU utilization of a virtual machine is much lower than the free capacity of a cluster on which this virtual machine is deployed.

Hog Score is divided into the following four ranges:

 
Table 6. Threshhold of Hog Score
Hog Score state
Default range
Default threshhold

Fatal (in red)

0 ~ 25

Default value is 25. To change this value, search for and edit CapacityHealthScoreFatal from Dashboards > Administration > Rules & Notifications > Manage Registry Variables.

Critical (in orange)

26 ~ 50

Default value is 50. To change this value, search for and edit CapacityHealthScoreCritical from Dashboards > Administration > Rules & Notifications > Manage Registry Variables.

Warning (in yellow)

51 ~ 75

Default value is 75. To change this value, search for and edit CapacityHealthScoreWarning from Dashboards > Administration > Rules & Notifications > Manage Registry Variables.

Normal (in green)

76 ~ 100

N/A

 

 

Server Purchase Tab

The Server Purchase view is intended to review the cost of replacing the existing infrastructure with new servers, and identify how many additional servers should be purchased in the specified Time Frame. The Server Purchase view contains two panes:

•
Planned Changes (left pane): Lists all valid planned changes before the deployment date, and provides the capability to create/edit/remove one or more planned changes. For more information, see Scenario Modeler Tab.
•
Server Purchase (right pane): Includes the following elements:
•
Select a Cluster: Lists available clusters in the selected virtual center or datacenter.
•
Weighting Options: Includes the following weighting options to be used when calculating the cost of replacing the infrastructure: Cost Weight, Power Weight, and Space Weight. Click Recalculate button to perform the calculation.
•
Replace Existing Servers tab: Displays details about how many new severs are required to replace the existing servers, without including the planned changes.
•
Purchase Additional Servers tab: Displays details about how many new servers should be purchased, based on the calculation of resource utilization and planned changes in the specified Time Frame. For details about how to edit the Time Frame, see Settings Menu.
* 
NOTE: Servers must be added or imported, to make them visible in the Server List table. For more information, see Managing Server List.
To access the Server Purchase view:
1
On the navigation panel, under Dashboards, click Capacity Director.
The Capacity Director dashboard opens.
2
Use the Group selector located at the top of the dashboard to select the virtual environment that you want to monitor.
3
On the Menu bar, click the Server Purchase tab.
The Server Purchase view appears at the bottom of the Capacity Director dashboard.

Replace Existing Servers

After selecting a cluster and specifying the weighting options, Foglight Capacity Director populates the recommendation results for replacing the existing servers.

To get recommendations for replacing existing servers:
1
In the Server Purchase pane, click the Replace Existing Servers tab.
2
Select a cluster from the Select a Cluster drop-down list.
3
Type the percent of Weighting Options to be used when calculating the cost of replacing the infrastructure:
•
Cost Weight: The percent of server cost.
•
Power Weight: The percent of server power.
•
Space Weight: The percent of server space.
* 
NOTE: The sum of Cost Weight, Power Weight, and Space Weight must be equal to 100%.
4
Click Calculate. This button is changed to Recalculate after executing the calculation the first time.
The Top Recommendation area is updated to show the summary of most recommended server, and the Server List table is updated to show all server types recommended as replacements.
* 
NOTE: You can review the recommendations provided and customize the results, as needed. For more information, see Managing Server List.

Purchase Additional Servers

After specifying the Time Frame in the Settings dialog, Foglight for VMware populates the recommendation about how many new servers should be purchased in order to meet the requirement of planned changes in the specified Time Frame. For details about how to edit the Time Frame, see Settings Menu.

To get recommendations for purchasing additional servers:
1
In the Server Purchase pane, click the Purchase Additional Servers tab.
2
Select a cluster from the Select a Cluster drop-down list.
3
Type the percent of Weighting Options to be used when calculating the cost of replacing the infrastructure:
•
Cost Weight: The percent of server cost.
•
Power Weight: The percent of server power.
•
Space Weight: The percent of server space.
* 
NOTE: The sum of Cost Weight, Power Weight, and Space Weight must be equal to 100%.
4
Click Calculate. This button is changed to Recalculate after executing the calculation first time.
5
The Top Recommendation area is updated to show the summary of most recommended server and how many servers should be purchased in the specified Time Frame.
The Server List table is updated to show all server types recommended to be purchased.
* 
NOTE: You can review the recommendations provided and customize the results, as needed. For more information, see Managing Server List.
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