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SyntheticsClient
You can use Amazon CloudWatch Synthetics to continually monitor your services. You can create and manage canaries, which are modular, lightweight scripts that monitor your endpoints and APIs from the outside-in. You can set up your canaries to run 24 hours a day, once per minute. The canaries help you check the availability and latency of your web services and troubleshoot anomalies by investigating load time data, screenshots of the UI, logs, and metrics. The canaries seamlessly integrate with CloudWatch ServiceLens to help you trace the causes of impacted nodes in your applications. For more information, see Using ServiceLens to Monitor the Health of Your Applications in the Amazon CloudWatch User Guide.
Before you create and manage canaries, be aware of the security considerations. For more information, see Security Considerations for Synthetics Canaries .
Installation
npm install @aws-sdk/client-synthetics
yarn add @aws-sdk/client-synthetics
pnpm add @aws-sdk/client-synthetics
SyntheticsClient Operations
Command | Summary |
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Command | Summary |
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AssociateResourceCommand | Associates a canary with a group. Using groups can help you with managing and automating your canaries, and you can also view aggregated run results and statistics for all canaries in a group. You must run this operation in the Region where the canary exists. |
CreateCanaryCommand | Creates a canary. Canaries are scripts that monitor your endpoints and APIs from the outside-in. Canaries help you check the availability and latency of your web services and troubleshoot anomalies by investigating load time data, screenshots of the UI, logs, and metrics. You can set up a canary to run continuously or just once. Do not use To create canaries, you must have the Do not include secrets or proprietary information in your canary names. The canary name makes up part of the Amazon Resource Name (ARN) for the canary, and the ARN is included in outbound calls over the internet. For more information, see Security Considerations for Synthetics Canaries . |
CreateGroupCommand | Creates a group which you can use to associate canaries with each other, including cross-Region canaries. Using groups can help you with managing and automating your canaries, and you can also view aggregated run results and statistics for all canaries in a group. Groups are global resources. When you create a group, it is replicated across Amazon Web Services Regions, and you can view it and add canaries to it from any Region. Although the group ARN format reflects the Region name where it was created, a group is not constrained to any Region. This means that you can put canaries from multiple Regions into the same group, and then use that group to view and manage all of those canaries in a single view. Groups are supported in all Regions except the Regions that are disabled by default. For more information about these Regions, see Enabling a Region . Each group can contain as many as 10 canaries. You can have as many as 20 groups in your account. Any single canary can be a member of up to 10 groups. |
DeleteCanaryCommand | Permanently deletes the specified canary. If the canary's Other resources used and created by the canary are not automatically deleted. After you delete a canary, you should also delete the following:
Before you delete a canary, you might want to use |
DeleteGroupCommand | Deletes a group. The group doesn't need to be empty to be deleted. If there are canaries in the group, they are not deleted when you delete the group. Groups are a global resource that appear in all Regions, but the request to delete a group must be made from its home Region. You can find the home Region of a group within its ARN. |
DescribeCanariesCommand | This operation returns a list of the canaries in your account, along with full details about each canary. This operation supports resource-level authorization using an IAM policy and the You are required to use the |
DescribeCanariesLastRunCommand | Use this operation to see information from the most recent run of each canary that you have created. This operation supports resource-level authorization using an IAM policy and the You are required to use the |
DescribeRuntimeVersionsCommand | Returns a list of Synthetics canary runtime versions. For more information, see Canary Runtime Versions . |
DisassociateResourceCommand | Removes a canary from a group. You must run this operation in the Region where the canary exists. |
GetCanaryCommand | Retrieves complete information about one canary. You must specify the name of the canary that you want. To get a list of canaries and their names, use DescribeCanaries . |
GetCanaryRunsCommand | Retrieves a list of runs for a specified canary. |
GetGroupCommand | Returns information about one group. Groups are a global resource, so you can use this operation from any Region. |
ListAssociatedGroupsCommand | Returns a list of the groups that the specified canary is associated with. The canary that you specify must be in the current Region. |
ListGroupResourcesCommand | This operation returns a list of the ARNs of the canaries that are associated with the specified group. |
ListGroupsCommand | Returns a list of all groups in the account, displaying their names, unique IDs, and ARNs. The groups from all Regions are returned. |
ListTagsForResourceCommand | Displays the tags associated with a canary or group. |
StartCanaryCommand | Use this operation to run a canary that has already been created. The frequency of the canary runs is determined by the value of the canary's |
StopCanaryCommand | Stops the canary to prevent all future runs. If the canary is currently running,the run that is in progress completes on its own, publishes metrics, and uploads artifacts, but it is not recorded in Synthetics as a completed run. You can use |
TagResourceCommand | Assigns one or more tags (key-value pairs) to the specified canary or group. Tags can help you organize and categorize your resources. You can also use them to scope user permissions, by granting a user permission to access or change only resources with certain tag values. Tags don't have any semantic meaning to Amazon Web Services and are interpreted strictly as strings of characters. You can use the You can associate as many as 50 tags with a canary or group. |
UntagResourceCommand | Removes one or more tags from the specified resource. |
UpdateCanaryCommand | Updates the configuration of a canary that has already been created. You can't use this operation to update the tags of an existing canary. To change the tags of an existing canary, use TagResource . |
SyntheticsClient Configuration
Parameter | Type | Description |
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Parameter | Type | Description |
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defaultsMode Optional | DefaultsMode | Provider<DefaultsMode> | The @smithy/smithy-client#DefaultsMode that will be used to determine how certain default configuration options are resolved in the SDK. |
disableHostPrefix Optional | boolean | Disable dynamically changing the endpoint of the client based on the hostPrefix trait of an operation. |
extensions Optional | RuntimeExtension[] | Optional extensions |
logger Optional | Logger | Optional logger for logging debug/info/warn/error. |
maxAttempts Optional | number | Provider<number> | Value for how many times a request will be made at most in case of retry. |
profile Optional | string | Setting a client profile is similar to setting a value for the AWS_PROFILE environment variable. Setting a profile on a client in code only affects the single client instance, unlike AWS_PROFILE.When set, and only for environments where an AWS configuration file exists, fields configurable by this file will be retrieved from the specified profile within that file. Conflicting code configuration and environment variables will still have higher priority.For client credential resolution that involves checking the AWS configuration file, the client's profile (this value) will be used unless a different profile is set in the credential provider options. |
region Optional | string | Provider<string> | The AWS region to which this client will send requests |
requestHandler Optional | __HttpHandlerUserInput | The HTTP handler to use or its constructor options. Fetch in browser and Https in Nodejs. |
retryMode Optional | string | Provider<string> | Specifies which retry algorithm to use. |
useDualstackEndpoint Optional | boolean | Provider<boolean> | Enables IPv6/IPv4 dualstack endpoint. |
useFipsEndpoint Optional | boolean | Provider<boolean> | Enables FIPS compatible endpoints. |
Additional config fields are described in the full configuration type: SyntheticsClientConfig