IBM Streams 4.2.1

Resource identifiers

A resource identifier uniquely identifies a resource in a domain or instance. For example, if you use the IBM® Streams resource manager, it can be a host name or IP address.

All IBM Streams resources in a domain must be able to resolve the host names for all other IBM Streams resources in the domain.

The networking configuration of the IBM Streams resources that you want to use in your domains determines how you must identify these hosts to IBM Streams.

If the hosts have host names that are correctly registered in your domain name system (DNS) or /etc/hosts file, you can use their host names to identify the hosts to IBM Streams. Cluster and server hosts typically fall into this category. You can specify short host names or fully qualified domain names.

If the hosts do not have host names that are registered in your DNS or /etc/hosts file, you must use IP addresses to identify the hosts. You cannot use a host's loopback address (127.*.*.*).

Important: If you use the host's dynamically assigned IP address in a domain, unpredictable results can occur when the host's IP address changes or the address is reassigned.