Virtual Machines

Introduction:

This section is common to all the editions of IT360, as per the below constraints;

Monitored Parameters:

The virtual machines (VMs) present in a VMware ESX/ESXi server are monitored, based on the parameters or the attributes, listed below. These attributes provide information about the functioning of the VMs. You can also configure thresholds to the numerical attributes, monitored by the VMs, based on these details.

In the Servers tab, click on the drop down icon. The drop down list shows the list of Virtualisation-related systems. Click on the relevant VM, from the list.

You would see the following;

Click on the individual Virtual machine, to view the detailed performance metrics of the corresponding virtual machine. These metrics are categorized into 6 separate tabs, for easy understanding;

  1. Overview Tab

  2. Memory Tab

  3. Datastore Tab

  4. Network Tab

  5. Disk I/O Tab

  6. Configuration Tab

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1. Overview Tab:

This tab provides a high-level overview of the virtual machine, as well as its resource utilization.

Parameter

Description

Monitor Information

Name

The name of the virtual machine.

Type

Denotes the type, you are monitoring.

Health

Denotes the health (Clear, Warning, Critical) status, of the VM.

Last Polled at

Specifies the time, at which the last poll was performed.

Next Poll at

Specifies the time, at which the next poll is scheduled.

Availability Shows the current status of the VM - Available or Not available.
CPU & Memory Utilization
CPU Utilization

The CPU Usage of the VM, in percentage.

CPU Usage

The CPU usage, in Mega Hertz.

Memory Utilization

The memory utilization of theVM, in percentage.

Disk & Network Usage

Disk I/O Utilization

The disk input/output utilization of the VM (in kbps).

Network Utilization The network usage of the VM, in kbps.

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3) Memory Tab:

This tab shows metrics about the memory utilization of the virtual machine.

Parameter

Description

Active Memory

Amount of memory that is actively used, measured as recently touched pages(MB).

Overhead Memory

Amount of additional host memory, allocated to the virtual machine.

Swapped Memory Amount of memory that is swapped.
Shared Memory Amount of memory that is shared between virtual machines.
Ballooned Memory Amount of memory held by memory control for ballooning.
Granted Memory Amount of physical memory granted. For hosts this can be represented as regions of memory for each virtual machine.

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4) Datastore Tab:

Parameter

Description

Datastore

Name of the datastore.

Type

Type of datastore (example: VMFS or VMware File System).

Capacity GB The total space available in this datastore, in giga bytes.
Used GB The used space of this datastore, in giga bytes.
Free GB The free space of this datastore, in giga bytes.
Health Overall health of the datastore.

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5) Network Tab:

The metrics in this category contain the VM network status details.

Parameter

Description

Network Interface

Name

Name of the Network Interface Card (NIC).

IP Address The ip address of the NIC.
Mac Address The Mac address of the NIC.
Network The name of the network.
Health Indicates the health of the Network Interface Card.
Network Interface Utilization
Name Name of the network inteface card (NIC), of the host.
Data Receive Rate The rate, at which this NIC receives data (in KBps).
Data Transmit Rate The rate, at which this NIC transfers data (KBps).
Packets Received Number of network packets, received by this NIC.
Packets Transmitted Number of network packets, transmitted by this NIC.
Health Overall health of this NIC.

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6) Disk I/O Tab:

This tab shows the detailed disk I/O (Input/Output) stats of the virtual machine.

Parameter

Description

LUN

Logical unit number, associated with the physical disk.

Disk Read Rate

Disk read rate of this LUN (in KBps).

Disk Write Rate Disk write rate of this LUN (in KBps).
Disk Reads Number of reads to this LUN, during the defined interval.
Disk Writes Number of writes to this LUN, during the defined interval.
Health Overall health of this LUN.

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7) Configuration Tab:

Parameter

Description

UUID

Universal Unique Identifier (UUID), assigned to the VM.

OS Name

Operating System, assigned to the VM.

Power The status of the power of the virtual machine (poweredOn, poweredOff, suspend).
VM Path Name Path name to the configuration file for the virtual machine, e.g. the '.vmx' file. This also implicitly defines the configuration directory.
IP Address The IP address, assigned to the VM.
Host Name The host, on which the VM is running.
Boot time The time, when the VM was booted.
Tools Version Current version of VMware Tools, running.
Number of CPUs Number of CPUs, present in the VM.
Configured Memory The amount of memory, configured for this VM.
Number of Virtual Disks The number of virtual disks in the VM.

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See Also:

Creating New Monitor - VMware ESX/ESXi Server



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