我有一个使用net::ssh-gem的ruby脚本。
这是一个简单的脚本,可以通过一个跳转服务器到一个目标框。该框仅对跳转服务器可见。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
问题是这个脚本在ruby中运行,而不是在jruby中运行。我的框架运行在jruby上,所以我需要将它与jruby一起使用。
我的解决方案是从jruby脚本中调用bash脚本来设置隧道并在那里运行命令,但我宁愿在jruby中完成所有工作。
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中运行时:
~/src/main/ruby$ ruby scripts/test_tunnel.rb
"proxy gotten"
"In vz-int-api02n"
~/src/main/ruby$
当我使用-Xerno.backtrace=true运行时,我可以看到jruby是1.7.9,并且我可以看到它使用的是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$
有没有办法让它像在ruby中那样在jruby中运行,或者我的解决方案是从jruby内部调用bash脚本吗?
这听起来很像netssh 3.0.2中修复的netssh中的这个错误。
关闭问题t的提交消息是"Bugfix:proxy命令错误地使用了非阻塞io-api,导致了罕见的io::EAGAIN错误",这听起来正是你所得到的。