Help setting up with multiple server

[NamekMaster]

I have three opensearch URL for different environment, for example, dev: https://dev.opensearch.com, uat: https://uat.opensearch.com, production: https://prd.opensearch.com, and I tried two ways to config the MCP server in Cursor, but they are both not working.

The first way I tried is configure three MCP server with different URL:

   "opensearch-prod": {
      "description": "",
      "type": "stdio",
      "command": "uvx",
      "args": ["opensearch-mcp-server-py"],
      "env": {
        "OPENSEARCH_URL": "https://prd.opensearch.com",
        "OPENSEARCH_NO_AUTH": "true"
      }
    },
    "opensearch-dev": {
      "description": "",
      "type": "stdio",
      "command": "uvx",
      "args": ["opensearch-mcp-server-py"],
      "env": {
        "OPENSEARCH_URL": "https://dev.opensearch.com",
        "OPENSEARCH_NO_AUTH": "true"
      }
    },
    "opensearch-uat": {
      "description": "",
      "type": "stdio",
      "command": "uvx",
      "args": ["opensearch-mcp-server-py"],
      "env": {
        "OPENSEARCH_URL": "https://uat.opensearch.com",
        "OPENSEARCH_NO_AUTH": "true"
      }
    },

Cursor started them successfully and got 8 tools for each MCP server. But when I ask Cursor to read logs from any environment, it got a connection error. It seems the MCP server always accesses the production URL because it launches first even if Cursor accesses the uat or dev. Accessing the production environment needs a VPN so it's unreachable. If I disable the opensearch-prd, and opensearch-dev, then accessing the opensearch-uat is successful.

After that I tried the second way to leverage the multi-mode. Here is my config.

"opensearch-mcp-server": {
      "command": "uvx",
      "args": [
        "opensearch-mcp-server-py",
        "--mode", "multi",
        "--config", "/Users/user/.cursor/opensearch_config.yml"
      ],
      "env": {}
    },

/Users/user/.cursor/opensearch_config.yml

version: "1.0"
description: "OpenSearch cluster configurations"

clusters:
  dev:
    opensearch_url: "https://dev.opensearch.com"
    opensearch_no_auth: true

  uat:
    opensearch_url: "https://uat.opensearch.com"
    opensearch_no_auth: true

  prod:
    opensearch_url: "https://prd.opensearch.com"
    opensearch_no_auth: true

When I ask Cursor to use it, I got an error.

I also tried to change opensearch_url to OPENSEARCH_URL but it still not working.

How can I correctly configure this MCP server with these three different url?

[rithin-pullela-aws]

Hi @NamekMaster
I am able to use the MCP server

My config:

version: "1.0"
description: "OpenSearch cluster configurations"

clusters:
  local:
    opensearch_url: "https://localhost:9200"
    opensearch_username: "admin"
    opensearch_password: "redacted"

  uat:
    opensearch_url: "redacted"
    opensearch_username: "redacted"
    opensearch_password: "redacted"

My MCP file with cursor:

{
  "mcpServers": {
    "opensearch-mcp-server": {
      "command": "uvx",
      "args": [
        "opensearch-mcp-server-py",
        "--mode", "multi",
      "--config", "/Users/rithinp/Documents/OS/OS-CDK/opensearch_config.yml"
      ],
      "env": {
        "OPENSEARCH_SSL_VERIFY": "false"
      }
    }
  }
}

[NamekMaster]

@rithin-pullela-aws Hi, looks like the only difference is I'm using opensearch_no_auth. I don't have a username and password and I also can't change the config of open search dashboard. Is there a problem when using opensearch_no_auth in multi mode ?

[rithin-pullela-aws]

Hi @NamekMaster, sorry missed this message. Yes, there was an issue with OpenSearch MCP server in no auth in multi mode. We fixed it in a recent PR. This will be released in the next version, scheduled this week