Cloudwatch input plugin
editCloudwatch input plugin
edit- Plugin version: v2.2.4
- Released on: 2018-09-17
- Changelog
For other versions, see the Versioned plugin docs.
Installation
editFor plugins not bundled by default, it is easy to install by running bin/logstash-plugin install logstash-input-cloudwatch
. See Working with plugins for more details.
Getting Help
editFor questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.
Description
editPull events from the Amazon Web Services CloudWatch API.
To use this plugin, you must have an AWS account, and the following policy
Typically, you should setup an IAM policy, create a user and apply the IAM policy to the user. A sample policy for EC2 metrics is as follows:
{ "Version": "2012-10-17", "Statement": [ { "Sid": "Stmt1444715676000", "Effect": "Allow", "Action": [ "cloudwatch:GetMetricStatistics", "cloudwatch:ListMetrics" ], "Resource": "*" }, { "Sid": "Stmt1444716576170", "Effect": "Allow", "Action": [ "ec2:DescribeInstances" ], "Resource": "*" } ] }
See http://aws.amazon.com/iam/ for more details on setting up AWS identities.
Configuration examples
editinput { cloudwatch { namespace => "AWS/EC2" metrics => [ "CPUUtilization" ] filters => { "tag:Group" => "API-Production" } region => "us-east-1" } }
input { cloudwatch { namespace => "AWS/EBS" metrics => ["VolumeQueueLength"] filters => { "tag:Monitoring" => "Yes" } region => "us-east-1" } }
input { cloudwatch { namespace => "AWS/RDS" metrics => ["CPUUtilization", "CPUCreditUsage"] filters => { "EngineName" => "mysql" } # Only supports EngineName, DatabaseClass and DBInstanceIdentifier region => "us-east-1" } }
Cloudwatch Input Configuration Options
editThis plugin supports the following configuration options plus the Common Options described later.
Setting | Input type | Required |
---|---|---|
No |
||
No |
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No |
||
No |
||
See note |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
||
No |
Also see Common Options for a list of options supported by all input plugins.
access_key_id
edit- Value type is string
- There is no default value for this setting.
This plugin uses the AWS SDK and supports several ways to get credentials, which will be tried in this order:
-
Static configuration, using
access_key_id
andsecret_access_key
params in logstash plugin config -
External credentials file specified by
aws_credentials_file
-
Environment variables
AWS_ACCESS_KEY_ID
andAWS_SECRET_ACCESS_KEY
-
Environment variables
AMAZON_ACCESS_KEY_ID
andAMAZON_SECRET_ACCESS_KEY
- IAM Instance Profile (available when running inside EC2)
aws_credentials_file
edit- Value type is string
- There is no default value for this setting.
Path to YAML file containing a hash of AWS credentials.
This file will only be loaded if access_key_id
and
secret_access_key
aren’t set. The contents of the
file should look like this:
:access_key_id: "12345" :secret_access_key: "54321"
combined
edit- Value type is boolean
-
Default value is
false
Use this for namespaces that need to combine the dimensions like S3 and SNS.
endpoint
edit- Value type is string
- There is no default value for this setting.
The endpoint to connect to. By default it is constructed using the value of region
.
This is useful when connecting to S3 compatible services, but beware that these aren’t
guaranteed to work correctly with the AWS SDK.
filters
edit- This setting can be required or optional. See note below.
- Value type is array
- There is no default value for this setting.
This setting is optional when the namespace is AWS/EC2
. Otherwise this is a required field.
Specify the filters to apply when fetching resources. Follow the AWS convention:
- Instances: { instance-id ⇒ i-12344321 }
- Tags: { "tag:Environment" ⇒ "Production" }
- Volumes: { attachment.status ⇒ attached }
Each namespace uniquely support certain dimensions. Please consult the documentation to ensure you’re using valid filters.
interval
edit- Value type is number
-
Default value is
900
Set how frequently CloudWatch should be queried
The default, 900
, means check every 15 minutes. Setting this value too low
(generally less than 300) results in no metrics being returned from CloudWatch.
metrics
edit- Value type is array
-
Default value is
["CPUUtilization", "DiskReadOps", "DiskWriteOps", "NetworkIn", "NetworkOut"]
Specify the metrics to fetch for the namespace. The defaults are AWS/EC2 specific. See http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/aws-namespaces.html for the available metrics for other namespaces.
namespace
edit- Value type is string
-
Default value is
"AWS/EC2"
If undefined, LogStash will complain, even if codec is unused. The service namespace of the metrics to fetch.
The default is for the EC2 service. See http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/aws-namespaces.html for valid values.
period
edit- Value type is number
-
Default value is
300
Set the granularity of the returned datapoints.
Must be at least 60 seconds and in multiples of 60.
proxy_uri
edit- Value type is string
- There is no default value for this setting.
URI to proxy server if required
role_arn
edit- Value type is string
- There is no default value for this setting.
The AWS IAM Role to assume, if any. This is used to generate temporary credentials, typically for cross-account access. See the AssumeRole API documentation for more information.
role_session_name
edit- Value type is string
-
Default value is
"logstash"
Session name to use when assuming an IAM role.
secret_access_key
edit- Value type is string
- There is no default value for this setting.
The AWS Secret Access Key
session_token
edit- Value type is string
- There is no default value for this setting.
The AWS Session token for temporary credential
statistics
edit- Value type is array
-
Default value is
["SampleCount", "Average", "Minimum", "Maximum", "Sum"]
Specify the statistics to fetch for each namespace
use_ssl
edit- Value type is boolean
-
Default value is
true
Make sure we require the V1 classes when including this module. require aws-sdk will load v2 classes. Should we require (true) or disable (false) using SSL for communicating with the AWS API The AWS SDK for Ruby defaults to SSL so we preserve that
Common Options
editThe following configuration options are supported by all input plugins:
Details
edit
codec
edit- Value type is codec
-
Default value is
"plain"
The codec used for input data. Input codecs are a convenient method for decoding your data before it enters the input, without needing a separate filter in your Logstash pipeline.
enable_metric
edit- Value type is boolean
-
Default value is
true
Disable or enable metric logging for this specific plugin instance by default we record all the metrics we can, but you can disable metrics collection for a specific plugin.
id
edit- Value type is string
- There is no default value for this setting.
Add a unique ID
to the plugin configuration. If no ID is specified, Logstash will generate one.
It is strongly recommended to set this ID in your configuration. This is particularly useful
when you have two or more plugins of the same type, for example, if you have 2 cloudwatch inputs.
Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.
input { cloudwatch { id => "my_plugin_id" } }
Variable substitution in the id
field only supports environment variables
and does not support the use of values from the secret store.
tags
edit- Value type is array
- There is no default value for this setting.
Add any number of arbitrary tags to your event.
This can help with processing later.
type
edit- Value type is string
- There is no default value for this setting.
Add a type
field to all events handled by this input.
Types are used mainly for filter activation.
The type is stored as part of the event itself, so you can also use the type to search for it in Kibana.
If you try to set a type on an event that already has one (for example when you send an event from a shipper to an indexer) then a new input will not override the existing type. A type set at the shipper stays with that event for its life even when sent to another Logstash server.