Amazon describes the service as:
Amazon CloudWatch is a web service that provides monitoring for AWS cloud resources, starting with Amazon EC2. It provides customers with visibility into resource utilization, operational performance, and overall demand patterns-including metrics such as CPU utilization, disk reads and writes, and network traffic. To use Amazon CloudWatch, simply select the Amazon EC2 instances that you'd like to monitor; within minutes, Amazon CloudWatch will begin aggregating and storing monitoring data that can be accessed using web service APIs or Command Line Tools. Amazon
Service List | Table of Contents
SYNOPSIS
mon-get-stats
MeasureName --statistics value[,value...] [--dimensions
"key1=value1,key2=value2..." ] [--end-time value ] [--namespace value ]
[--period value ] [--start-time value ] [--unit value ]
[General Options]
DESCRIPTION
This call will get time-series data, where the time is presented in UTC, for
one or more statistics of a given MeasureName.
ARGUMENTS
MeasureName
The measure name that corresponds to one contained in the gathered
Metric. You can also set this value using "--measure-name". Required.
SPECIFIC OPTIONS
--dimensions "key1=value1,key2=value2..."
Dimensions (one or more) along which to aggregate the returned data. If
no dimensions are specified, the aggregate of all the measures with the
given measure name are returned.
--end-time VALUE
The timestamp of the last datapoint to return, inclusive. For example,
2008-02-26T19:00:00+00:00. Timestamp will be rounded down to the nearest
minute.The dateTime type uses ISO 8601. The default for this is now.
--namespace VALUE
The namespace a given metric is valid in. Currently, these are mostly
composed of AWS/EC2 and AWS/ELB.
--period VALUE
The granularity (in seconds) of the returned datapoints. Period must be
at least 60 seconds and must be a multiple of 60. The default is 60
seconds.
-s, --statistics VALUE1,VALUE2,VALUE3...
The valid statistics to be returned for the given metric. Possible values
are: Average, Sum, Maximum, or Minimum. Required.
--start-time VALUE
The timestamp of the first datapoint to return, inclusive. For example,
2008-02-26T19:00:00+00:00. Timestamp will be rounded down to the nearest
minute. The dateTime type uses ISO 8601. The default for this is 1 hour
in the past.
--unit VALUE
Unit of the metric.
GENERAL OPTIONS
--aws-credential-file VALUE
Location of the file with your AWS credentials. This value can be set by
using the environment variable 'AWS_CREDENTIAL_FILE'.
--connection-timeout VALUE
Specify a connection timeout VALUE (in seconds). The default value is
'30'.
--delimiter VALUE
What delimiter to use when displaying delimited (long) results.
--ec2-cert-file-path VALUE
No description available for this parameter. This value can be set by
using the environment variable 'EC2_CERT'.
--ec2-private-key-file-path VALUE
No description available for this parameter. This value can be set by
using the environment variable 'EC2_PRIVATE_KEY'.
--headers
If you are displaying tabular or delimited results, it includes the
column headers. If you are showing xml results, it returns the HTTP
headers from the service request, if applicable. This is off by default.
-I, --access-key-id VALUE
Specifcy VALUE as the AWS Access Id to use.
--region VALUE
Specify region VALUE as the web service region to use. This value can be
set by using the environment variable 'EC2_REGION'.
-S, --secret-key VALUE
Specify VALUE as the AWS Secret Key to use.
--show-empty-fields
Show empty fields and rows, using a "(nil)" value. The default is to not
show empty fields or columns.
--show-request
Displays the URL the tools used to call the AWS Service. The default
value is 'false'.
--show-table, --show-long, --show-xml, --quiet
Specify how the results are displayed: tabular, delimited (long), xml, or
no output (quiet). Tabular shows a subset of the data in fixed
column-width form, while long shows all of the returned values delimited
by a character. The xml is the raw return from the service, while quiet
suppresses all standard output. The default is tabular, or 'show-table'.
-U, --url VALUE
This option will override the URL for the service call with VALUE. This
value can be set by using the environment variable 'AWS_CLOUDWATCH_URL'.
INPUT EXAMPLES
This shows how to get the average, min, and max CPU utilization for EC2
instance i-c07704a9, at 1 hour resolution.
$PROMPT>mon-get-stats CPUUtilization --start-time 2009-02-14T23:00:00.000Z --end-time 2009-03-14T23:00:00.000Z --period 3600 --statistics "Average,Minimum,Maximum" --namespace "AWS/EC2" --dimensions "InstanceId=i-c07704a9"
This shows CPU utilization across your EC2 fleet.
$PROMPT2>mon-get-stats CPUUtilization --start-time 2009-02-14T23:00:00.000Z --end-time 2009-03-14T23:00:00.000Z --period 3600 --statistics "Average,Minimum,Maximum" --namespace "AWS/EC2"
OUTPUT
This command returns a table that contains the following:
* Time - Time the metrics were taken.
* Samples - Number of samples in metric.
* Average - Average value.
* Sum - Sum of values.
* Minimum - Minimum observed value.
* Maximum - Maximum observed value.
* Unit - Unit of the metric.
OUTPUT EXAMPLES
This is an example of an output of the Samples and Average metrics at one
minute resolution.
Time Samples Average Unit
2009-05-19 00:03:00 2.0 0.19 Percent
2009-05-19 00:04:00 2.0 0 Percent
2009-05-19 00:05:00 2.0 0 Percent
2009-05-19 00:06:00 2.0 0 Percent
2009-05-19 00:07:00 2.0 0 Percent
2009-05-19 00:08:00 2.0 0 Percent
2009-05-19 00:09:00 2.0 0 Percent
2009-05-19 00:10:00 2.0 0 Percent
2009-05-19 00:11:00 2.0 0 Percent
2009-05-19 00:12:00 2.0 0.195 Percent
2009-05-19 00:13:00 2.0 0.215 Percent
...
Service List | Table of Contents
SYNOPSIS
mon-list-metrics
[General Options]
DESCRIPTION
This call will get a complete list of all the metrics that the system is
storing for your AWS account. Note: Any metric not seen for 2 weeks will be
aged out from this list as that is the retention period for data.
GENERAL OPTIONS
--aws-credential-file VALUE
Location of the file with your AWS credentials. This value can be set by
using the environment variable 'AWS_CREDENTIAL_FILE'.
--connection-timeout VALUE
Specify a connection timeout VALUE (in seconds). The default value is
'30'.
--delimiter VALUE
What delimiter to use when displaying delimited (long) results.
--ec2-cert-file-path VALUE
No description available for this parameter. This value can be set by
using the environment variable 'EC2_CERT'.
--ec2-private-key-file-path VALUE
No description available for this parameter. This value can be set by
using the environment variable 'EC2_PRIVATE_KEY'.
--headers
If you are displaying tabular or delimited results, it includes the
column headers. If you are showing xml results, it returns the HTTP
headers from the service request, if applicable. This is off by default.
-I, --access-key-id VALUE
Specifcy VALUE as the AWS Access Id to use.
--region VALUE
Specify region VALUE as the web service region to use. This value can be
set by using the environment variable 'EC2_REGION'.
-S, --secret-key VALUE
Specify VALUE as the AWS Secret Key to use.
--show-empty-fields
Show empty fields and rows, using a "(nil)" value. The default is to not
show empty fields or columns.
--show-request
Displays the URL the tools used to call the AWS Service. The default
value is 'false'.
--show-table, --show-long, --show-xml, --quiet
Specify how the results are displayed: tabular, delimited (long), xml, or
no output (quiet). Tabular shows a subset of the data in fixed
column-width form, while long shows all of the returned values delimited
by a character. The xml is the raw return from the service, while quiet
suppresses all standard output. The default is tabular, or 'show-table'.
-U, --url VALUE
This option will override the URL for the service call with VALUE. This
value can be set by using the environment variable 'AWS_CLOUDWATCH_URL'.
INPUT EXAMPLES
This shows how to get a list of all your metrics.
$PROMPT>mon-list-metrics
OUTPUT
This command returns a table that contains the following:
* Measure Name - The name of the measure attached to this metric.
* Namespace - The namespace associated with this metric.
* Dimensions - A list of the dimension names and values associated with this
metric.
OUTPUT EXAMPLES
This is an example of an output of a call to 'mon-list-metrics'.
Measure Name Namespace Dimensions
CPUUtilization AWS/EC2 {InstanceId=i-e7e48a8e}
CPUUtilization AWS/EC2 {InstanceId=i-231d744a}
CPUUtilization AWS/EC2 {InstanceId=i-22016e4b}
CPUUtilization AWS/EC2 {InstanceId=i-b0345cd9}
CPUUtilization AWS/EC2 {InstanceId=i-539dff3a}
CPUUtilization AWS/EC2 {InstanceId=i-af3544c6}
CPUUtilization AWS/EC2 {InstanceId=i-d4f29ebd}
CPUUtilization AWS/EC2 {ImageId=ami-de4daab7}
...
Service List | Table of Contents
Amazon CloudWatch CLI version 1.0.0.22 (API 2009-05-15)