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The default Heimdall server username is “admin” and the password is EITHER:

  • heimdall“; or
  • In AWS and similar environments, the AWS instance ID.

If the password is not set to “heimdall” please see the server log (/var/log/heimdallserver.out.log or /opt/heimdall/log/heimdall.log) and look for a line such as:

2016-12-11 20:10:32,516 5153 [INFO] [http-nio-8087-exec-1] Initializing access control, user=admin, password=i-0aa1234a1a1a12abc


The default username and password for a server can be controlled explicitly by creating a file /etc/heimdall.conf prior to the server being first run, and add the lines:

  • hduser=<username>
  • hdpassword=<password>

When the http query “” returns a value, this value is used as the default password if no configuration is set in the /etc/heimdall.conf.  This will happen in AWS instances, and some other cloud environments.  This value can be obtained with:

echo `curl -s`

In the event the passwords need to be deleted from a current configuration, the following steps can be used to delete the configured accounts:

  1.  Open the file $heimdallhome/config/heimdall.conf (the default install directory is /opt/heimdall/)
  2. Remove the json array values for the “address” variable, i.e. replace:




Once saved, if all accounts are removed, then the default admin account will be re-initialized once the Heimdall server is restarted.