Home/ Questions/Is it okay to fix the socket.gaierror: [errno 8] nodename nor servname provided, or not known problem?
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Veda Singh
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Asked: 2022-05-18T17:41:34+00:00 In:

Is it okay to fix the socket.gaierror: [errno 8] nodename nor servname provided, or not known problem?

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The error

import socket
 socket.gethostbyname(socket.gethostname())
 
 Traceback (most recent call last):
  File "<pyshell#26>", line 1, in <module>
  socket.gethostbyname(socket.gethostname())
 gaierror: [Errno 8] nodename nor servname provided, or not known

occurred when I update the mac to macOS Sierra. I’ve tried to fix it for some days but have not resolved it yet. Can someone suggest a relevant solution to fix the socket.gaierror: [errno 8] nodename nor servname provided, or not known issue? Much appreciate your support.

errno 8
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2 Answers

  1. Best Answer
    Expert

    The cause:

    This error happens because you do not write the hostname in/etc/hosts in your program and you do also not determine the IP address of the host name for the local DNS configuration. 

    Solution:

    To solve this error, you can convert your code to:

    import socket
socket.gethostbyname("")

    Another solution, when you use the computer name determined in /etc/hosts which have

    127.0.0.1 ET02282-MAC.local
127.0.0.1 localhost

    and in your connection use “ET02282-MAC.local”, the error: ”[errno 8] nodename nor servname provided, or not known” will not exist.

    • 0

  2. There is an answer in OP’s comments based another query,, which requires that you edit /etc/hosts i.e. echo 127.0.0.1 $HOSTNAME >> /etc/hosts.

    Alternativ, you could use socket.gethostbyname('localhost') assuming localhost is what your need is and it is defined within your /etc/hosts.

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