Nutanix Prism Connection Status Test
The Nutanix Prism Element typically manages one/more Nutanix AHV clusters. Each node in a cluster runs a Nutanix Controller VM (CVM), which serves all of the I/O operations for the hypervisor and all VMs running on that node. A Prism service runs on every CVM with an elected Prism Leader which is responsible for handling HTTP requests. The cluster external IP will always be hosted by the Prism Leader. If the Prism Leader fails, then a new leader will be elected, which will assume the cluster external IP. This implies that the Prism service will be rendered unavailable, only if all the CVMs in a cluster fail. Such a failure can cause the dependent applications to suffer prolonged outages. Likewise, if the Prism leader takes too long to respond to HTTP requests, it will once again degrade application performance.
If this is to be avoided, then the availability and responsiveness of the Prism service should be periodically checked and abnormalities should be promptly reported. This can be achieved using the Nutanix Prism Connection Status test.
This test emulates an HTTP request to a Nutanix Prism Element, reports whether the Prism service is available or not, and if available, also reports how quickly it responds to the request. Sudden breaks in Prism availability and poor responsiveness of the Prism service can be promptly detected in the process. The test also reports the response code returned by the Prism Element service, so that the nature of the response - whether it is an error response or not - can be determined.
Target of the test : A Nutanix AHV Prism Element
Agent deploying the test : A remote agent
Outputs of the test : One set of results for the Nutanix AHV Prism Element
| Parameter | Description |
|---|---|
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Test Period |
How often should the test be executed |
|
Host |
The host for which the test is to be configured. |
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Port |
The port at which the specified host listens. By default, this is NULL |
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Nutanix Prism Element User, Nutanix Prism Element Password and Confirm Password |
To connect to the Nutanix Prism Element and collect metrics from it, the eG agent should be configured with the credentials of a Prism Element user with the Viewer role. The steps for creating such a user are detailed in the Pre-requisites for Monitoring Nutanix Prism Element topic. Confirm the nutanix Prism Element password by retyping itin Confirm Password textbox. |
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SSL |
By default, the Nutanix Prism Element server is SSL-enabled. Accordingly, the SSL flag is set to Yes by default. This indicates that the eG agent will communicate with the Prism Element server via HTTPS by default. |
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WebPort |
By default, the Nutanix Prism Element server listens on port 9440. This implies that while monitoring a Nutanix AHV server via the Prism server, the eG agent connects to port 9440. |
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DD Frequency |
Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. 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. |
| Measurement | Description | Measurement Unit | Interpretation | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Prism availability |
Indicates whether or not the Prism service is available. |
Percent |
If the value of this measure is 100, it indicates that the Prism service is available. The value 0 on the other hand denotes that the Prism service is unavailable. |
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Response time |
Indicate the time taken by the Prism service to respond to HTTP requests. |
Secs |
If the value of this measure consistently increases, it indicates that the performance of the Nutanix prism is gradually deteriorating. Ideally, the value of this measure should be low. |
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Response code |
Indicates the response code returned by the emulated HTTP request. |
Number |
The possible values for this measure and what they represent are detailed in the table below:
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