我有一个使用net :: ssh gem的ruby脚本。
它是一个简单的脚本,用于将跳转服务器隧道传送到目标框。该框仅对跳出服务器可见。这是脚本:
require 'net/ssh/proxy/command'
require "net/ssh"
class TestTunnel
def initialize
proxy = Net::SSH::Proxy::Command.new('ssh admin@10.10.10.10 nc %h %p 2>/dev/null')
p "proxy gotten"
Net::SSH.start("host1", "admin", :password => "admin", :proxy => proxy) do |ssh|
hostname = ssh.exec!("hostname")
p "In #{hostname}"
end
end
end
b=TestTunnel.new
问题是脚本在ruby中运行但不在jruby中运行。我的框架运行jruby所以我需要使用jruby。
我的解决方案是从我的jruby脚本调用bash脚本来设置隧道并在那里运行命令,但我宁愿在jruby中完成所有操作。
以下是我得到的错误:
~/src/main/ruby$ jruby --1.9 scripts/test_tunnel.rb
"proxy gotten"
IO::EAGAINWaitReadable: Resource temporarily unavailable - errno backtraces disabled; run with -Xerrno.backtrace=true to enable
当我在ruby中跑步时:
~/src/main/ruby$ ruby scripts/test_tunnel.rb
"proxy gotten"
"In vz-int-api02\n"
~/src/main/ruby$
当我使用-Xerrno.backtrace = true运行时,我可以看到jruby是1.7.9,我可以看到它使用ruby 1.9:
~/src/main/ruby$ jruby -Xerrno.backtrace=true --1.9 scripts/test_tunnel.rb
"proxy gotten"
IO::EAGAINWaitReadable: Resource temporarily unavailable -
read_nonblock at org/jruby/RubyIO.java:2856
recv at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/proxy/command.rb:75
fill at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/buffered_io.rb:65
next_packet at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/packet_stream.rb:88
poll_message at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/session.rb:183
loop at org/jruby/RubyKernel.java:1519
poll_message at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/session.rb:178
wait at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/session.rb:215
loop at org/jruby/RubyKernel.java:1519
wait at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/session.rb:213
initialize at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh/transport/session.rb:87
start at /usr/local/jruby-1.7.9/lib/ruby/gems/shared/gems/net-ssh-2.9.2/lib/net/ssh.rb:207
initialize at scripts/test_tunnel.rb:8
(root) at scripts/test_tunnel.rb:15
~/src/main/ruby$ jruby -Xerrno.backtrace=true --1.9 --version
jruby 1.7.9 (1.9.3p392) 2013-12-06 87b108a on Java HotSpot(TM) 64-Bit Server VM 1.8.0_72-b15 +indy [linux-amd64]
~/src/main/ruby$
有没有办法让它像jruby一样在jruby中运行,或者我是从jruby中调用bash脚本的唯一方法吗?
A
答案 0 :(得分:2)
这听起来很像net-ssh中的this bug,它在net-ssh 3.0.2中得到修复。
关闭该问题的提交消息是“错误修正:代理命令正在使用非阻塞io api错误地导致罕见的IO :: EAGAIN错误”,这听起来就像你得到的那样。