Is there anyway to increase the ssh timeout in capistrano, or even
better to have some form of keep-alive like the ServerAliveInterval/
ServerAliveCountMax settings in the openssh client config?
I'm deploying to EC2, and I've noticed that capistrano will die half
way through a deploy pretty reliably with a ECONNRESET. This mostly
happens during ec2 peak hours, so I think something in their routers
must be removing idle connections. The problem is, my connection
isn't really idle - during my deployment I serially execute the
restart of my servers so that we don't have any downtime. As a
result, by the time it gets to the last server, its been sitting idle
for a while, and I think the connection is dead, though cap doesn't
seem to know it till it tries to write to it. This happens when I do
other long lived tasks that don't have any output. Here is the stack
trace I see when my deploy dies:
usr/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.2/lib/net/ssh/
buffered_io.rb:64:in `recv': Connection reset by peer - recvfrom(2)
(Errno::ECONNRESET)
from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.2/lib/net/ssh/
buffered_io.rb:64:in `fill'
from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.2/lib/net/ssh/
connection/session.rb:200:in `postprocess'
from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.2/lib/net/ssh/
connection/session.rb:196:in `each'
from /usr/local/lib/ruby/gems/1.8/gems/net-ssh-2.0.2/lib/net/ssh/
connection/session.rb:196:in `postprocess'
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/lib/
capistrano/processable.rb:31:in `process_iteration'
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/lib/
capistrano/processable.rb:43:in `ensure_each_session'
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/lib/
capistrano/processable.rb:41:in `each'
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/lib/
capistrano/processable.rb:41:in `ensure_each_session'
... 67 levels...
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/lib/
capistrano/cli/execute.rb:14:in `execute'
from /usr/local/lib/ruby/gems/1.8/gems/capistrano-2.4.0/bin/cap:4
from /usr/local/bin/cap:19:in `load'
from /usr/local/bin/cap:19
Any help appreciated, thanks,
Matt
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