Monitored Parameters

The Amazon EC2 instances are monitored based on the parameters or the attributes listed below. These attributes provide information about the functioning of the EC2 instances. You can also configure thresholds to the numerical attributes based on these details and get notified when the thresholds are violated.

The Availability tab shows the Availability history of the EC2 instances for the past 24 hours or 30 days. The Performance tab shows some key performance indicators of an EC2 instance such as CPU Utilization, Volume Idle Time, Network In and Network Out along with the heat charts for these attributes. This tab also shows the health status and events for the past 24 hours or 30 days.

The List view displays all the EC2 instances present in the Amazon account along with an overall idea of their availability and health status. The list view also enables you to perform bulk admin configurations. Click on the individual instance listed to view detailed performance metrics.

Click on the monitor listed in the Availability tab to view detailed performance metrics of the EC2 instance. These metrics are categorized into 3 different tabs for easy understanding. Below is an explanation of the metrics shown in these tabs:

1) Overview

This tab provides a high-level overview of the EC2 instance as well as its performance indicators.

Parameter	Description
Monitor Information
Name	The name of the EC2 instance
Type	Denotes the type you are monitoring.
Health	Denotes the health (Clear, Warning, Critical) status of the EC2 instance.
Region Name	Name of the region where the instance is running
Instance Type	Indicates the type of the EC2 instance
State	The current state of the instance. Valid values include running, stopped, shutdown and terminated
Public IP Address	The IP address of the instance.
Platform	Indicates the platform of the instance (eg: Windows)
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.
Today's Availability	Shows the overall availability status of the instance for the day. You can also view 7/30 reports and the current availability status of the instance.
CPU Utilization	The CPU utilization of the instance
Network Traffic
Network IN	Incoming traffic in bytes per minute
Network Out	Outgoing traffic in bytes per minute
Disk I/O
Disk Read Ops	The average number of disk read operations per second.
Disk Write Ops	The average number of disk write operations per second.

2) Attached Volumes

This tab provides metrics about the EBS volumes attached to the EC2 instance.

Parameter	Description
Configuration
Volume ID	The ID of the Amazon EBS volume. The volume and instance must be within the same Availability Zone and the instance must be running.
Size	The size of the volume in Giga Bytes.
Snapshot ID	Snapshot from which the volume was created.
Created Time	Time stamp when volume creation was initiated.
Attached Time	Time stamp when the attachment was initiated.
Delete on Termination	Specifies whether the Amazon EBS volume is deleted on instance termination.
Health	Denotes the health of the volume (clear, warning, critical)
Latency
Idle Time	The time period when no read or write operations were waiting to be completed in percentage(%)
Write Latency	The average of the total number of seconds spent by all Write operations that completed in the period
Read Latency	The average of the total number of seconds spent by all Read operations that completed in the period
Volume Traffic
Read Bandwidth	The sum of total number of Read operations in the period in bytes per second
Write Bandwidth	The sum of total number of write operations in the period in bytes per second
Volume IO
Read Throughput	The sum of read operations in the period in seconds
Write Throughput	The sum of write operations in the period in seconds
Queue Length	The average number of read and write operation requests waiting to be completed over the period.

3) Configuration

This tab provides the configuration details of the EC2 instance.

Parameter	Description
Instance ID	The unique key that identifies the EC2 instance.
Instance Type	Indicates the type of the instance.
Instance Launch Time	The time at which the instance was launched
State	The current state of the instance. The values include running, stopped, shutdown and terminated
Image ID	Image ID of the AMI used to launch the instance.
AMILaunch Index	The AMI launch index, which can be used to find this instance within the launch group.
Public DNS Name	The public DNS name assigned to the instance. This DNS name is contactable from outside the Amazon EC2 network.
Private DNS Name	The private DNS name assigned to the instance. This DNS name can only be used inside the Amazon EC2 network.
Public IP Address	The IP address of the instance.
Private IP Address	The private IP address assigned to the instance.
KeyPair Name	The name of the key pair, if this instance was launched with an associated key pair.
Platform	Indicates the platform of the instance (eg: Windows)
Availability Zone	The instance's availability zone.
Architecture	The architecture of the image.
RamDisk Id	RAM disk associated with this instance.
Kernel Id	Kernel associated with this instance.
RootDevice Type	The root device type used by the AMI. The AMI can use an Amazon EBS or instance store root device.
RootDevice Name	The name of the root device used by the AMI.
Monitoring	Indicates whether monitoring is enabled for the instance.

See Also

Creating New Monitor - Amazon

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