[BUG] Unable to login on Opensearch Dashboard after changing the default admin password

[noginahalchetan]

What is the bug?
Changed the default admin password in OPENSEARCH_INITIAL_ADMIN_PASSWORD in opensearch. However, I am unable to login into Opensearch Dashboard with the new password. It throws error as invalid username or password

How can one reproduce the bug?
Steps to reproduce the behavior:

• Have a cluster with the admin password set to non default at the time of deployment
• Login into opensearch dashboard with the non default password

What is the expected behavior?
Should be able to login into opensearch dashboard with the new password

What is your host/environment?

• OS: Kubernetes Cluster
• Version 2.18.0

Do you have any screenshots?

Do you have any additional context?
Add any other context about the problem.

[cwperks]

[Triage] @noginahalchetan How are you running OpenSearch? Is this a fresh cluster or one with pre-existing data? This env variable must be setting prior to running the install_demo_configuration.sh script which overwrites the hash value in internal_users.yml. If any changes are made to the yaml files, they must be sourced using the securityadmin tool