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**To update a sampling rule**
The following ``update-sampling-rule`` example modifies a sampling rule's configuration. The rules are consumed from a JSON file. Only the fields being updated are required. ::
aws xray update-sampling-rule \
--cli-input-json file://1000-default.json
Contents of ``1000-default.json``::
{
"SamplingRuleUpdate": {
"RuleName": "Default",
"FixedRate": 0.01,
"ReservoirSize": 0
}
}
Output::
{
"SamplingRuleRecords": [
{
"SamplingRule": {
"RuleName": "Default",
"RuleARN": "arn:aws:xray:us-west-2:123456789012:sampling-rule/Default",
"ResourceARN": "*",
"Priority": 10000,
"FixedRate": 0.01,
"ReservoirSize": 0,
"ServiceName": "*",
"ServiceType": "*",
"Host": "*",
"HTTPMethod": "*",
"URLPath": "*",
"Version": 1,
"Attributes": {}
},
"CreatedAt": 0.0,
"ModifiedAt": 1529959993.0
}
]
}
For more information, see `Configuring Sampling, Groups, and Encryption Settings with the AWS X-Ray API <https://docs.aws.amazon.com/en_pv/xray/latest/devguide/xray-api-configuration.html#xray-api-configuration-sampling>`__ in the *AWS X-Ray Developer Guide*.