OpenSearch 2.12.0 onwards, the OpenSearch Security Plugin a change that requires an initial password for 'admin' user.

[aborroy]

Since you are using "latest" tag for OpenSearch Docker Images, running this sample today fails (2.13.0 is picked as current version)

You may add an environment variable like the following one to opensearch containers:

      - OPENSEARCH_INITIAL_ADMIN_PASSWORD=Sease.io.2024

Note that this requires also to update the Postman Collection with Basic Auth credentials

Or you may disable security plugin in opensearch containers by adding following line:

    - DISABLE_SECURITY_PLUGIN=true

Also disabling security is required for OpenSearch Dashboard container adding this environment variable:

      DISABLE_SECURITY_DASHBOARDS_PLUGIN: true

And changing protocol from https to http for OPENSEARCH_HOSTS

Thanks for this awesome tutorial!