RHEV Datacenters Test

This test auto-discovers the data centers configured on an RHEV manager and reports the composition, resource availability, and resource usage of each data center.  This way, the test turns the spot light on those data centers that are headed towards a potential resource contention.

Target of the Test: A RHEV Manager

Agent running the test: A remote agent

Output of the test: One set of results for every data center configured on the RHEV manager 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.

Port

The port at which the specified host listens. The default port is 8443.

RHEL MGR User and RHEL MGR Password

To pull out the desired metrics from the RHEV manager, this test has to be configured with the privileges of a user who has been assigned the RHEVMUser role. Specify the user name and password of this user in the RHEL MGR User and RHEL MGR Password text boxes, respectively.

Confirm Password

Confirm the RHEL MGR Password by retyping it here.

RHEL Manager Domain

Specify the domain to which the RHEV manager belongs. By default, internal is displayed 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

Datacenter status

Indicates the current status of this data center.

 

The values that this measure can report and their numeric equivalents have been detailed in the table below:

Measure Value Numeric Value
Not operational 0
Up 1
Uninitialized 2
Maintenance 3
Problematic 4
Contend 5

Note:

By default, this measure reports one of the Measure Values listed in the table above. The graph of this measure however will represent status using the numeric equivalents - ‘0’ or '1’.

Storage domains in data center

Indicates the current number of storage domains in the data center.

Number

Use the detailed diagnosis of this measure to know which storage domains are part of the data center.

Datacenter disk capacity

Indicates the total disk capacity of this data center.

GB

 

Free space in datacenter

Indicates the total unused space in this datacenter.

GB

A high value is desired for this measure.

Used space in datacenter

Indicates the amount of disk space that is currently utilized in this data center.

GB

Ideally, the value of this measure should be low.

Percentage of free space in datacenter

Indicates the percentage of disk space that is currently free in this data center.

Percent

A low value or a steady decrease in the value of this measure indicates the gradual erosion of disk space from the hosts in the data center. If the situation persists, then the data center may suddenly run very low on disk space, causing the hosts and VMs in the data center to fight over the meager resources. This in turn will affect the performance of the VMs, hosts, and the applications executing on the VMs.

Clusters in datacenter

Indicates the current number of clusters in this data center.

Number

Use the detailed diagnosis of this measure to know which clusters are part of the data center.

RHEV servers in datacenter

Indicates the current number of RHEV servers in this data center.

Number

Use the detailed diagnosis of this measure to know which RHEV servers are part of the data center.

VMs in datacenter

Indicates the current number of VMs in this data center.

Number

Use the detailed diagnosis of this measure to know which virtual machines are part of the data center.

Compatibility version

Indicates the compatibility level of this data center.

Number

Each host connected to Red Hat Enterprise Virtualization Manager contains a version of VDSM. VDSM is the agent within the virtualization infrastructure that runs on a hypervisor or host and provides local management for virtual machines, networks and storage. Red Hat Enterprise Virtualization Manager controls hypervisors and hosts using current or older versions of VDSM. The Manager migrates virtual machines from host to host within a cluster. This means the Manager excludes certain features from a current version of VDSM until all hosts within a cluster have the same VDSM version, or more recent, installed.

The API represents this concept as a compatibility level for each host, corresponding to the version of VDSM installed. A version element contains major and minor attributes, which describe the compatibility level. When an administrator upgrades all hosts within a cluster to a certain level, the version level appears under a supported_versions element. This indicates the cluster's version is now updatable to that level. Once the administrator updates all clusters within a data center to a given level, the data center is updatable to that level.

Supported version

Indicates the supported version of this data center.

Number

The detailed diagnosis of the Clusters in datacenter reports the names of the clusters that are part of a particular data center.

DDclustersindatacenter

Figure 1 : The detailed diagnosis of the Clusters in datacenter measure

The detailed diagnosis of the RHEV servers in datacenter reports the names and IP addresses of the RHEV servers that are part of a particular data center.

DDRHEVserversindatacenter

Figure 2 : The detailed diagnosis of the RHEV servers in datacenter measure

The detailed diagnosis of the VMs in datacenter measure reports the names and IP addresses of the VMs that are part of a particular data center.

DDVmsindatacenter

Figure 3 : The detailed diagnosis of the VMs in datacenter measure

The detailed diagnosis of the Storage domains in datacenter measure reports the name and type of each storage domain that is part of a particular data center.

DDstoragedomainsindatacenter

Figure 4 : The detailed diagnosis of the Storage domains in datacenter measure