Previous behavior: A dedicated user named "db_user" was not uniformly created or utilized across all sites, and recovery scripts or CLI executions did not default to using "db_user" for logging into VMs.

New Behavior: A new user named "db_user" is created across all sites. Recovery scripts are modified to use "db_user" as the default user for signing in to each VM. CLI executions will now use "db_user" as the default user. For "db_user", the password is set, and PEM file-based authentication is enabled on all VMs across all sites.