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Resource Manager Contact

The resource manager contact string is used by the GRAM Client to connect to, authenticate to, and request service from a GRAM resource manager. The simplest contact string is just a host name, but additional fields may be present in the name to qualify the TCP port number it is listening on, the service name (for example, to choose a specific scheduler), and the subject name (security identity) of the resource manager.

For those resource manager contacts which omit the port, service or subject field the following defaults are used:

port = 2119 (assigned by IANA)
service = jobmanager
subject = subject based on hostname

The following contain all of the acceptable formats of a GRAM Resource Manager Contact:

Note: Any of the above forms may be preceded by an optional "<b>https</b><b>://</b>".