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OpenSearch Sink Security

This document provides more details about the security settings of the sink.

AWS OpenSearch Service

OpenSearch sink is capable of sending data to an Amazon OpenSearch Service domain which use Identity and Access Management. The plugin uses the default credential chain. Run aws configure using the AWS CLI to set your credentials.

You should ensure that the credentials you configure have the required permissions. Below is an example Resource based policy, with required set of permissions that is required for the sink to work,

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::<AccountId>:user/data-prepper-sink-user"
      },
      "Action": "es:ESHttp*",
      "Resource": [
        "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/otel-v1*",
        "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/_template/otel-v1*",
        "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/_plugins/_ism/policies/raw-span-policy",
        "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/_alias/otel-v1*",
        "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/_alias/_bulk"
      ]
    },
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::<AccountId>:user/data-prepper-sink-user"
      },
      "Action": "es:ESHttpGet",
      "Resource": "arn:aws:es:us-east-1:<AccountId>:domain/<domain-name>/_cluster/settings"
    }
  ]
}

Please check the Identity and Access Management in Amazon OpenSearch Service documentation to know how to set IAM to your OpenSearch domain,

Fine-Grained Access Control (FGAC) in Amazon OpenSearch Service

The OpenSearch sink creates an Index State Management (ISM) policy for Trace Analytics indices but Amazon OpenSearch Service allows only the master user to create an ISM policy. So,

  • If you use IAM for your master user in FGAC domain, configure the sink as below,
sink:
    opensearch:
      hosts: ["https://your-fgac-amazon-opensearch-service-endpoint"]
      aws_sigv4: true

Run aws configure using the AWS CLI to set your credentials to the master IAM user.

  • If you use internal database for your master user in FGAC domain, configure the sink as below,
sink:
    opensearch:
      hosts: ["https://your-fgac-amazon-opensearch-service-endpoint"]
      aws_sigv4: false
      username: "master-username"
      password: "master-password"

Note: You can create a new IAM/internal user with all_access and use instead of the master IAM/internal user.