发表新帖
发表新帖

getaddrinfo: nodename nor servname provided, or not known

前端 未结
关注
13 1579
梦谈多话
梦谈多话 2020-12-02 12:14

I have a Ruby on Rails application that I am deploying on a computer running Mac OS X 10.6. The code where the problem arises is run by a delayed_job. The problem only occur

相关标签:
13条回答
  • 生来不讨喜
    2020-12-02 12:22

    To avoid this problem, we can bind to 127.0.0.1 instead of localhost:

    bin/rails server -b 127.0.0.1

    0 讨论(0)
  • 离开以前
    2020-12-02 12:23

    I got the error while trying to develop while disconnected to the Internet. However, the website I was working on needs to be able to talk to some other websites, so it choked when it couldn't do so. Connecting to the internet fixed the error.

    0 讨论(0)
  • 忘掉有多难
    2020-12-02 12:24

    I was seeing this error unrelated to rails. It turned out my test was trying to use a port that was too high (greater than 65535).

    This code will produce the error in question

    require 'socket'
Socket.getaddrinfo("127.0.0.1", "65536")
    0 讨论(0)
  • 礼貌的吻别
    2020-12-02 12:27

    If all of the above fails, try to convert to UNIX Line Endings, or do:

    brew install dos2unix
sudo dos2unix -c mac /private/etc/hosts

    Maybe the hosts encoding is wrong.

    hope this helps

    0 讨论(0)
  • 青春惊慌失措
    2020-12-02 12:29

    rest-client's RestClient needs the http: scheme when resolving the URL. It calls Net::HTTP for you, which doesn't want the http: part, but rest-client takes care of that.

    Is the URL the actual one you are attempting to reach? example.org is a valid domain used for testing and documentation and is reachable; I'd expect the "api" and "api_endpoint" parts to fail and see that when I try to reach them.

    require 'socket'

IPSocket.getaddress('example.org') # => "2620:0:2d0:200::10"
IPSocket.getaddress('api.example.org') # => 
# ~> -:7:in `getaddress': getaddrinfo: nodename nor servname provided, or not known (SocketError)
# ~>    from -:7:in `<main>'

    Here's what I get using Curl:

    greg-mbp-wireless:~ greg$ curl api.example.org/api_endpoint
curl: (6) Couldn't resolve host 'api.example.org'
greg-mbp-wireless:~ greg$ curl example.org/api_endpoint
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /api_endpoint was not found on this server.</p>
<hr>
<address>Apache Server at example.org Port 80</address>
</body></html>
greg-mbp-wireless:~ greg$ curl example.org
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
  <META http-equiv="Content-Type" content="text/html; charset=utf-8">
  <TITLE>Example Web Page</TITLE>
</HEAD> 
<body>  
<p>You have reached this web page by typing &quot;example.com&quot;,
&quot;example.net&quot;,&quot;example.org&quot
  or &quot;example.edu&quot; into your web browser.</p>
<p>These domain names are reserved for use in documentation and are not available 
  for registration. See <a href="http://www.rfc-editor.org/rfc/rfc2606.txt">RFC 
  2606</a>, Section 3.</p>
</BODY>
</HTML>
    0 讨论(0)
  • 暖寄归人
    2020-12-02 12:35

    I fixed this problem simply by closing and reopening the Terminal.

    0 讨论(0)
 看不清?
提交回复
热议问题