[BUG] Invalid character '<' looking for beginning of value

[Gromkins]

What is the bug?

2024-05-29T14:38:10.367+0300 [ERROR] vertex "opensearch_index.test-simple-index" error: invalid character '<' looking for beginning of value
╷
│ Error: invalid character '<' looking for beginning of value

How can one reproduce the bug?

resource "opensearch_index" "test-simple-index" {
name = "terraform-test"
number_of_shards = "1"
number_of_replicas = "1"
mappings = <<EOF
{
"properties": {
"name": {
"type": "text"
}
}
}
EOF
}

What is the expected behavior?

terraform could apply the change and create the index.

What is your host/environment?

terraform version = "1.8.4"
opensearch version = "2.2.1"

Do you have any screenshots?

Do you have any additional context?

the logs are recorded:

2024-05-29T14:38:09.838+0300 [WARN] unexpected data: registry.terraform.io/opensearch-project/opensearch:stderr="{"@caller":"github.com/hashicorp/terraform-plugin-sdk/[email protected]/internal/logging/helper_schema.go:21","@Level":"trace","@message":"Calling downstream","@module":"sdk.helper_schema","@timestamp":"2024-05-29T14:38:09.838292+03:00"}"
2024-05-29T14:38:09.844+0300 [INFO] provider.terraform-provider-opensearch_v1.0.0: 2024/05/29 14:38:09 [INFO] Pinging url to determine version https://localhost with timeout 5s: timestamp="2024-05-29T14:38:09.844+0300"
2024-05-29T14:38:10.358+0300 [WARN] unexpected data: registry.terraform.io/opensearch-project/opensearch:stderr="{"@caller":"github.com/hashicorp/terraform-plugin-sdk/[email protected]/internal/logging/helper_schema.go:21","@Level":"trace","@message":"Called downstream","@module":"sdk.helper_schema","@timestamp":"2024-05-29T14:38:10.357307+03:00"}"
2024-05-29T14:38:10.367+0300 [DEBUG] State storage *statemgr.Filesystem declined to persist a state snapshot
2024-05-29T14:38:10.367+0300 [ERROR] vertex "opensearch_index.test-simple-index" error: invalid character '<' looking for beginning of value
╷
│ Error: invalid character '<' looking for beginning of value
│
│ with opensearch_index.test-simple-index,
│ on main.tf line 45, in resource "opensearch_index" "test-simple-index":
│ 45: resource "opensearch_index" "test-simple-index" {
│
╵
2024-05-29T14:38:10.376+0300 [DEBUG] provider.stdio: received EOF, stopping recv loop: err="rpc error: code = Unavailable desc = error reading from server: EOF"
2024-05-29T14:38:10.382+0300 [DEBUG] provider: plugin process exited: path=.terraform/providers/registry.terraform.io/opensearch-project/opensearch/1.0.0/linux_amd64/terraform-provider-opensearch_v1.0.0 pid=226663
2024-05-29T14:38:10.382+0300 [DEBUG] provider: plugin exited

[rblcoder]

The following code works for me

terraform {
  required_providers {
    opensearch = {
      source  = "opensearch-project/opensearch"
      version = "2.2.1"
    }
  }
}

provider "opensearch" {
  url         = "https://127.0.0.1:9200"
  healthcheck = "false"

  username = "admin"
  password = "myStrongPassword123@456"
  insecure = "true"

}

resource "opensearch_index" "test-simple-index" {
  name               = "terraform-test"
  number_of_shards   = "1"
  number_of_replicas = "1"
  mappings           = <<EOF
      {
      "properties": {
      "name": {
      "type": "text"
      }
      }
}
EOF
}

[Gromkins]

The plan was succeed but terraform apply again appear the error with invalid character '<'.

Terraform v1.8.4
opensearch v2.2.1

[rblcoder]

I am using the same terraform version and OpenSearch version 2.14.0

[Gromkins]

We're using self hosted open-search v 1.3.1 on cloud vm's. Could be this the reason?

[Gromkins]

I tested it via 2.7.0. the same. one thing was another that i try to deploy to http://localhost not HTTPS.

[Gromkins]

Tested via https:

It works.