It is typically used in conjunction with pmap_dump , which exports the current list of registered RPC programs to a file. If the portmapper service is restarted, all existing mappings are lost; pmap_set can then be used to read the exported file and restore the registry without requiring every individual RPC service to restart.
Before stopping the portmapper, save the current state. pmap_dump > rpc_registry.backup pmap_set download
In RPC environments, services must register their presence (including program number, version, and port) with a central directory service known as the portmapper. The pmap_set command provides a way to manually inject these mappings into that directory. It is typically used in conjunction with pmap_dump
The pmap_set utility is a specialized Linux command used to manage registered Remote Procedure Call (RPC) programs on a local host. While often confused with the more common pmap command (which reports a process's memory map), pmap_set is specifically designed for restoring port mappings to a running or rpcbind service. What is pmap_set? pmap_dump > rpc_registry
Older distributions may still use the portmap package. You can search for the specific file using your package manager's "provides" feature (e.g., yum provides */pmap_set ). Using pmap_set: Common Syntax