Question

我一直在机器上的几台主机上收到此错误，例如：

require 'open-uri'
open('https://google.com').read


Net::OpenTimeout: execution expired
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:904:in `initialize'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:904:in `open'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:904:in `block in connect'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/timeout.rb:103:in `timeout'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:902:in `connect'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:887:in `do_start'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/net/http.rb:876:in `start'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:323:in `open_http'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:741:in `buffer_open'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:212:in `block in open_loop'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:210:in `catch'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:210:in `open_loop'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:151:in `open_uri'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:721:in `open'
    from /usr/local/opt/rbenv/versions/2.4.0/lib/ruby/2.4.0/open-uri.rb:35:in `open'
    from (irb):3
    from /usr/local/opt/rbenv/versions/2.4.0/bin/irb:11:in `<main>'

不会发生在

之类的其他人身上

open('https://twitter.com').read

Ruby 2.4.0来自rbenv和macOS 10.12.3。还测试了Ruby 2.0.0 - macOS上的系统版本。

当我curl或使用节点request时，我没有收到任何错误和预期结果。所以这不是被阻止的主机，我的IP也没有被阻止。

尝试重新安装Ruby，重启机器，问题仍然存在。

任何指针？

Answer 1

看起来这是Ruby如何解析DNS的问题。

添加了require 'resolv-replace'，现在它立即打开了连接。

来源： https://stackoverflow.com/a/27485369/116925 https://github.com/ruby/ruby/pull/597#issuecomment-40507119

Answer 2

我从Docker容器中的Rails应用程序收到错误，并且重新启动Docker服务解决了问题：

sudo service docker start

Answer 3

我遇到了这个问题的另一个原因。有一个网络，其中IPv6被宣布为可路由的，但不是。这导致尝试使用IPv6导致错误。

所以我不得不禁用IPv6。

对于Red Hat Enterprise Linux 7：

# cat /etc/sysctl.d/10-ipv6.conf 
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
# sysctl -p

require 'resolv-replace'也有帮助，但我想它只是解析为IPv4，所以我不想以这种方式限制应用程序。

Ruby Net :: OpenTimeout：执行过期

3 个答案: