Citrix Server VDA Status Test

The Virtual Delivery Agent (VDA) enables connections to applications and desktops. The VDA is installed on the Citrix XenApp server that runs the applications or virtual desktops for the user. It enables the machines to register with Delivery Controllers and manage the High Definition experience (HDX) connection to a user device. If the VDA failed to register with a delivery controller, it would not be possible for the delivery controller to broker a connection to the target Citrix XenApp server. The target Citrix XenApp server would therefore become an unusable resource. The VDA issues with respect to registration are logged in the event log of the target Citrix XenApp server. Some of the most common issues that are logged into the event log are the virtual desktop not added to the correct desktop farm, the virtual desktop firewall not configured properly, DNS configuration failure, Time synchronization failure, WCF failure etc. The eG agent integrates with the XDPing to collect the metrics that details on what exactly was the reason behind the registration issues i.e., what was the service that failed. The Citrix Server VDA Status test helps administrators to figure out which service has failed leading to VDA registration issues!

This test monitors the Virtual Delivery Agent installed on the target Citrix XenApp server and reports whether the services such as user authentication, active directory authentication, DNS lookup, WCF endpoints etc are successful or not. This test also reports the errors and warnings available in the event log when registration failure occurs.

Target of the test : Any Citrix server

Agent deploying the test : An internal/remote agent

Outputs of the test : One set of results for the Citrix XenApp server monitored

Configurable parameters for the test
Parameters Description

Test Period

How often should the test be executed. By default, this is 15 minutes.

Host

The host for which the test is to be configured.

Port

Refers to the port used by the Citrix server .

DD Frequency

Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 6:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD Frequency.

Detailed Diagnosis

To make diagnosis more efficient and accurate, the eG Enterprise suite embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option.

The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

  • The eG manager license should allow the detailed diagnosis capability
  • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Machine account status

Indicates the current status of the account of the machine on which the VDA was installed.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the account of the machine. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

User authentication status

Indicates the current status of the User authentication service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the user authentication service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

Domain controller time sync status

Indicates the current status of the Domain controller time sync service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the Domain controller time sync service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

WCF endpoint status

Indicates the current status of the WCF endpoint service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the WCF endpoint service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

VDA windows service status

Indicates the current status of the VDA Windows service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the VDA Windows service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

DNS lookup status

Indicates the current status of the DNS lookup service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the DNS lookup service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

Windows firewall status

Indicates the current status of the Windows firewall service.

The values that this measure can report and its corresponding numeric equivalents are listed in the table below:

Measure Value Numeric Value
Failed 0
Success 1

Note:

By default, this measure reports the Measure Values listed in the table above to indicate the current status of the Windows firewall service. In the graph of this measure however, the same is represented using the corresponding numeric equivalents only.

Errors in event log in last one hour

Indicates the number of errors detected in the event log for the server during the last 1 hour.

Number

Ideally, the value of this measure should be 0.

Warnings in event log in last one hour

Indicates the number of warning messages that were logged in the event log for the server during the last 1 hour.

Number

Ideally, the value of this measure should be 0.