VMware 4817V62 - vSphere - PC, Administration Manual

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Table 21-4. Virtual Machine Condition and State Alarm Triggers (Continued)
Trigger Type Trigger Name Description
State Heartbeat Current status of the guest operating system heartbeat:
n
Gray – VMware Tools are not installed or not running.
n
Red – No heartbeat. Guest operating system may have stopped
responding.
n
Yellow – Intermittent heartbeat. A Yellow status may be caused by heavy
guest OS usage.
n
Green – Guest operating system is responding normally.
Condition Memory Usage (%) Amount of configured RAM (MB) used by the virtual machine. The
calculation is:
VM Memory Usage (%) = Active Memory [MB] / configured RAM of VM [MB]
x 100
Condition Network Usage (Kbps) Sum of data transmitted and received across all virtual NIC instances on the
virtual machine.
Condition Snapshot Size (GB) Aggregate size (KB) of all snapshots taken for the current virtual machine.
State State Current state of the virtual machine:
n
Powered On – The virtual machine is powered on.
n
Powered Off – The virtual machine is powered off.
n
Suspended – The virtual machine is suspended.
Condition Total Disk Latency (ms) Average amount of time taken to process a SCSI command issued by the Guest
OS to the virtual machine. The calculation is:
Total Disk Latency = kernelL deviceLatency
n
Low – 0-2 seconds
n
Moderate – 2-6 seconds
n
High – More than 6 seconds
Condition Total Size on Disk (GB) Aggregate amount of disk space occupied by all virtual machines on the host.
Host Condition and State Triggers
VMware provides preconfigured alarms that trigger when hosts undergo certain conditions and states.
Table 21-5 lists the default Condition and State triggers you can set on hosts.
Table 21-5. Host Condition and State Triggers
Trigger Name Description Trigger Type
Connection State Current connection state of the host:
n
Connected – The host is connected to the server. For ESX/ESXi hosts,
this is always the state.
n
Disconnected – A user has explicitly shut down the host. In this state,
vCenter Server does not expect to receive heartbeats from the host.
The next time a heartbeat is received, the host is returned to a
connected state and an event is logged.
n
Not Responding – vCenter Server is not receiving heartbeat messages
from the host. After the heartbeat messages are received again, the
state automatically changes to Connected. This state is often used to
trigger an alarm on the host.
State
Console SwapIn Rate
(KBps)
Rate at which the service console kernel is swapping in memory. The
Console Swapin Rate indicates memory pressure in the service console.
A high value is generally a precursor to timeout operations. To fix the
problem, consider adding more memory or ending the memory-intensive
task.
Condition
Chapter 21 Working with Alarms
VMware, Inc. 237