RHEV VM Status Test

The value of this measure indicates the level of I/O activity on every VM. Compare this value across VMs to identify which VM is experiencing abnormally high disk I/O. Zooming into the internal operations of that VM can shed light on the I/O-intensive processes that may be executing in that VM.

Target of the Test: A RHEV Hypervisor

Agent running the test: An internal agent

Output of the test: One set of results for the RHEV hypervisor being monitored.

Configurable parameters for the test
Parameter Description

Test period

How often should the test be executed.

Host

The host for which the test is to be configured.

RHEL MGR Host,
RHEL MGR Port,
RHEL MGR Domain,
RHEL MGR User
RHEL MGR Password

To auto-discover the VMs on a target RHEV hypervisor and obtain the outside view of the performance of each VM, the eG agent needs to connect to the RHEV Manager that manages the target RHEV hypervisor. To enable the eG agent to obtain the outside view, you need to configure the test with the following:

  • RHEL MGR Host - The IP address/host name of the RHEV manager that the eG agent should connect to.
  • RHEL MGR Port - The port number at which the said RHEV manager listens.
  • RHEL MGR Domain - The domain to which the RHEV manager belongs.
  • RHEL MGR User and RHEL MGR Password - The credentials of a user with read-only access to the Restful API on the RHEV manager. To know how to create a read-only role and assign it to a user, follow the steps detailed in Configuring the eG Agent to use the RESTful APIs on the RHEV Manager to Obtain the “Outside View”.

If the RHEV hypervisor being monitored was discovered via an RHEV manager, then the IP address, port number, domain name, and user credentials of the RHEV manager used for discovery will be automatically displayed against the respective parameters.

If the RHEV hypervisor being monitored was not discovered via an RHEV manager, but you still want to use an RHEV manager for obtaining the outside view, then, you can select any IP address of your choice from the RHEL MGR host list. By default, this list will be populated with the IP addresses/host names of all the RHEV managers that were configured for the purpose of discovering the RHEV hypervisors. If you select an RHEL MGR host from this list, then the corresponding port number, domain name, and user credentials will be automatically displayed against the respective parameters.

On the other hand, if the RHEV manager that you want to use for metrics collection is not available in the RHEL MGR Host list, then, you can configure an RHEV manager on-the-fly by picking the Other option from the RHEL MGR Host list.  An ADD THE RHEV MANAGER DETAILS window will then pop up. Refer to Configuring an RHEV Manager to Use for Monitoring the RHEV Hypervisor to know how to add an RHEV manager using this window. Once the RHEV manager is added, its IP address, port number, domain name and user credentials will be displayed against the corresponding parameters.

Confirm Password

Confirm the RHEL MGR Password by retyping it here.

SSL

If the RHEV manager to which the eG agent should connect is SSL-enabled, then set this flag to Yes. If not, set it to No.

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

Registered VMs

Indicates the total number of VMs that have been registered with the RHEV hypervisor.

Number

Use the detailed diagnosis of this measure to view the details of the registered VMs.

Powered on VMs

Indicates the number of VMs that are currently powered on.

Number

To know which are the VMs that are powered on, use the detailed diagnosis capability of this measure (if enabled).

Powered off VMs

Indicates the number of VMs that are currently powered off.

Number

To know which are the VMs that are powered on, use the detailed diagnosis capability of this measure (if enabled).

Suspended VMs

Indicates the number of VMs that are currently in a suspended state.

Number

Use the detailed diagnosis of this measure to know which VMs are currently in a suspended state. The suspend action saves the virtual machine state to disk and stops it.

Orphaned VMs

Indicates the number of VMs that are currently in an UNKNOWN state.

Number

Use the detailed diagnosis of this measure to know which VMs are currently in an unknown state.

Other VMs

Indicates the number of VMs currently in the image_illegal and not_responding states,.

Number

Use the detailed diagnosis of this measure to know which VMs are currently in an image_illegal and not_responding state.

VM templates

Indicates the number of template VMs currently on the hypervisor.

 

Number

A template is a "golden" copy of a virtual machine (VM) organized by folders and managed with permissions. They are useful because they act as a protected version of a model VM which can be used to create new VMs. As a template is the original and perfect image of a particular VM, it cannot be powered on or run.

You can use the detailed diagnosis of this measure to view the names and IP addresses of the template VMs.

Added VMs

Indicates the number of VMs that were newly added to the hypervisor since the last measurement period.

Number

You can use the detailed diagnosis of this measure to know which VMs were recently migrated to the hypervisor.

Removed VMs

Indicates the number of VMs that were newly removed from the hypervisor since the last measurement period.

Number

You can use the detailed diagnosis of this measure to know which VMs were recently migrated from the hypervisor.

VMs with users assigned

Indicates the number of VMs that have been assigned to users.

Number

To know which VMs have been assigned to users, use the detailed diagnosis capability of this measure (if enabled).

VMs with users unassigned

Indicates the number of VMs that have not been assigned to users.

Number

To know which VMs have not been assigned to users, use the detailed diagnosis capability of this measure (if enabled).

The detailed diagnosis of the Registered VMs measure reveals the name, IP address, and operating system of the registered VMs.

Figure 1 : The detailed diagnosis of the Registered VMs measure

The detailed diagnosis of the Orphaned VMs measure reveals the name, IP address, and operating system of the VMs that are currently in an Unknown state.

Figure 2 : The detailed diagnosis of the Orphaned VMs measure

The detailed diagnosis of the Powered on VMs measure reveals the name, IP address, and operating system of the VMs that are currently powered on.

Figure 3 : The detailed diagnosis of the Powered on VMs measure

The detailed diagnosis of the VMs without users assigned measure reveals the name, IP address, and operating system of the VMs that have been not been assigned to any users.

Figure 4 : The detailed diagnosis of the Vms without users assigned measure