[Samba] rpc_pipe_open_ncalrpc: connect(/run/samba/ncalrpc/EPMAPPER) failed: No such file or directory

Achim Gottinger achim at ag-web.biz
Mon Oct 2 15:25:26 UTC 2023

Am 01.10.2023 um 07:41 schrieb Michael Tokarev via samba:
> This question has already been asked in the past, but there was
> no answer.
> The above message is logged quite often in /var/log/samba/log.samba-dcerpcd.
> This is a stand-alone anonymous read-only server.
> Is it something to worry about?  It smells like samba isn't working
> properly.
> If yes, how can I fix it?
> If no, how can I stop samba from logging un-interesting messages?
> What dcerpcd is used for to begin with?  I don't remember it running
> before (but iirc it is a new thing in 4.16).
> Thanks,
> /mjt

I see this EPMAPPER error in my logs excatly once.

[2023/09/29 09:30:16,  0] ../../source3/rpc_server/rpc_host.c:2981(main)
  samba-dcerpcd version 4.18.6-Debian started.
  Copyright Andrew Tridgell and the Samba Team 1992-2023
[2023/09/29 09:30:16.791210,  1] ../../source3/rpc_client/cli_pipe.c:3014(rpc_pipe_open_ncalrpc)
  rpc_pipe_open_ncalrpc: connect(/run/samba/ncalrpc/EPMAPPER) failed: Verbindungsaufbau abgelehnt
[2023/09/29 09:30:17.184124,  1] ../../source3/rpc_server/rpc_host.c:1778(rpc_worker_exited)
  rpc_worker_exited: No worker with PID 1699406

At the same time there are a few errors reported in rpc_spoolss.

[2023/09/29 09:29:58,  0] ../../source3/rpc_server/spoolss/srv_spoolss_util.c:57(winreg_printer_binding_handle)
  winreg_printer_binding_handle: Could not connect to winreg pipe: NT_STATUS_CONNECTION_DISCONNECTED
[2023/09/29 09:31:30,  0] ../../source3/rpc_server/rpc_worker.c:1125(rpc_worker_main)

Not sure if they are related I see the spoolss errors at different times without the EPMAPPER error.

OS is bookworm and there is no socket /run/samba/ncalrpc/EPMAPPER here. Only the one at /run/samba/ncalrpc/np/epmapper.


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