Opensearch access issue

Question

Hi

I've created test opensearch domain according to guide 
https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gsgcreate-domain.html

It has Public access, fine grained access control with mster-user/password
But when I try to connect to opensearch with those command

> curl -XPOST -u 'my-mster-user:my-mster-password' 'https://search-wb-elk-xqfw2gbhc4ie6ormpmsf3gb7ae.us-east-2.es.amazonaws.com/_bulk' --data-binary @movies.json -H 'Content-Type: application/json'

I get

> "Message":"User: anonymous is not authorized to perform: es:ESHttpPost because no resource-based policy allows the es:ESHttpPost action"

Whereas I've setup everything by default like it is said in guide

What's the problem here?

here is my access policy
`{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      },
      "Action": "es:*",
      "Resource": "arn:aws:es:us-east-my-arn:domain/wb_elk/*"
    }
  ]
}`

Answer

Your access policy looks odd. I understand you redacted your own account ID, but can you please double check if it follows the pattern below:

```
"Resource": "arn:aws:es:xxxxxxxx:0123456789012:domain/xxxxxx/*"
```

In your original message you got "us-east-my-arn", which should be something like "us-east-1:account_id" (note the missing region identifier, and there should be an account_id and not an ARN).

Answer

Hi,

in case you have not yet tried, please check [this knowledge base article: "I get a "User: anonymous is not authorized" error when I try to access my Amazon OpenSearch Service cluster"](https://aws.amazon.com/premiumsupport/knowledge-center/anonymous-not-authorized-opensearch/) it mentions also other possible causes / resolutions.

hope this helps

Answer

Your access policy looks alright, except for the missing asterisks - but I think this is due to the markdown formatting here.

One thing you might check is the security setting within OpenSearch. You can go to OpenSearch Plugins > Security and check if that user has the proper permissions. You can get more info in the [documentation](https://opensearch.org/docs/latest/security-plugin/access-control/users-roles/#map-users-to-roles), but the idea is that you need to create an user (you probably already have it) and then grant to this user the appropriate permissions.

Also, I suggest editing your answer and redacting your AWS account ID: although not sensitive information, you should not share this unless necessary (otherwise others can use it to invoke

Opensearch access issue

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