我已经在openshift上托管了服务器端("Node js"和"Express js")代码，从一个星期开始，我就收到了此错误.如何克服呢? [英] I had hosted my server side (`Node js` and `Express js`) code on openshift, from one week I'm getting this error. How to overcome this?

问题描述

在网站上，几乎所有API都显示此错误

In the website it is showing this error for almost all APIs

Failed to load resource: the server responded with a status of 502 (Proxy Error)

XMLHttpRequest cannot load. No 'Access-Control-Allow-Origin' header is present on the
requested resource. Origin is therefore not allowed access. The response had
HTTP status code 503.

注意::CORS已使用npm安装，但仍然出现上述错误.

NOTE:CORS has been already installed using npm but still getting the above error.

有时会收到此错误

Failed to load resource: net::ERR_INCOMPLETE_CHUNKED_ENCODING

使用rhc tail命令检查的日志位于日志下方

When checked log using rhc tail command got below log

C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/ssh/ruby_comp
at.rb:20:in `select': closed stream (IOError)
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/ruby_compat.rb:20:in `io_select'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/transport/packet_stream.rb:75:in `available_for_read?'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/transport/packet_stream.rb:87:in `next_packet'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/transport/session.rb:193:in `block in poll_message'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/transport/session.rb:188:in `loop'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/transport/session.rb:188:in `poll_message'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:513:in `dispatch_incoming_packets'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:237:in `ev_preprocess'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/event_loop.rb:95:in `each'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/event_loop.rb:95:in `ev_preprocess'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/event_loop.rb:27:in `process'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:216:in `process'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:178:in `block in loop'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:178:in `loop'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh/connection/session.rb:178:in `loop'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/ssh_helpe
rs.rb:198:in `block in ssh_ruby'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/net-ssh-4.0.0.beta3/lib/net/
ssh.rb:245:in `start'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/ssh_helpe
rs.rb:173:in `ssh_ruby'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/commands/
tail.rb:40:in `tail'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/commands/
tail.rb:21:in `run'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/commands.
rb:294:in `execute'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/commands.
rb:285:in `block (3 levels) in to_commander'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/commander-4.2.1/lib/commande
r/command.rb:180:in `call'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/commander-4.2.1/lib/commande
r/command.rb:180:in `call'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/commander-4.2.1/lib/commande
r/command.rb:155:in `run'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/commander-4.2.1/lib/commande
r/runner.rb:421:in `run_active_command'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/command_r
unner.rb:72:in `run!'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/commander-4.2.1/lib/commande
r/delegates.rb:8:in `run!'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/lib/rhc/cli.rb:37
:in `start'
    from C:/Ruby21-x64/lib/ruby/gems/2.1.0/gems/rhc-1.38.7/bin/rhc:20:in `<t
op (required)>'
    from C:/Ruby21-x64/bin/rhc:23:in `load'
    from C:/Ruby21-x64/bin/rhc:23:in `<main>'

我在哪里做错了?

推荐答案

我觉得您安装了错误的Ruby版本.我认为只有1.86至2.0版本有效.卸载Ruby，然后重新安装早期版本.

I have a feeling you have installed the wrong Ruby version. I think only version 1.86 thru 2.0 works. Uninstall Ruby and reinstall earlier version.

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