If you are not using nodemanager to startup the servers:
- Create a file named boot.properties at $domain_home/security/boot.properties with the following content
username=<USERNAME> password=<PASSWORD>
- Start the server now and it will automatically pickup the username/password from this file. The server will also encrypt the file.
- Reference
If you are using nodemanager to startup the servers:
- You need to enroll the server to the nodemanager and the boot.properties file will be automatically created at $domain_home/servers/server_name/data/nodemanager/
- Reference