How to convert remote pid to node name?

Question

When deciding one client parameter structure to one OTP gen_server, is it necessary to insert both Pid and Node name into the parameter structure?

Given one remote pid, is it possible to convert pid to node name? I mean full node name, like "emacs@yus-iMac.local".

Does this answer your question? [How do I found out which node an erlang process is running on?](https://stackoverflow.com/questions/7083980/how-do-i-found-out-which-node-an-erlang-process-is-running-on) — 2240, Oct 30 '20 at 13:24

score 5 · Answer 1 · answered May 23 '12 at 19:08

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Calling node(Pid) will return the name of the node on which Pid resides.

answered May 23 '12 at 19:08

rvirding

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score 4 · Accepted Answer · edited May 23 '17 at 12:31

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Can someone explain the structure of a Pid in Erlang?

How do I found out which node an erlang process is running on?

edited May 23 '17 at 12:31

Community

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answered May 21 '12 at 10:28

Sergey Miryanov

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On the otp gen_server side, if just receiving remote pid, the server doesn't know the node name. In addition, for writing load balance between nodes, erlang:nodes() return a group of nodes' name, so I need to convert pid to node name. – Chen Yu May 21 '12 at 11:10
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erlang:node (Pid) returns atom that is node name. – Sergey Miryanov May 21 '12 at 11:37

How to convert remote pid to node name?

2 Answers2