Nicer templates #500
Nicer templates #500
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useful if deploying erlang nodes via capistrano when TERM is not set correctly attaching to the node will result in weirdness
+Bi disables the erlang break functionality
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What is |
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mkdir /tmp/pipes ctrl-s try and type some stuff (this doesn't work for me on osx. but it does on linux ubuntu) start crying ctrl-q q(). RUN_ERL_DISABLE_FLOWCNTRL=true run_erl /tmp/pipes /tmp/log erl& ctrl-s start typing. don't cry more information here: http://erlang.org/pipermail/erlang-patches/2010-March/000883.html |
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Ok, I'm fine with it being a new default but we should still allow it to be overridden. So something like: |
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Is this only for when you're using pipes? Pressing ctrl-c shouldn't stall a production node if you're using a remote shell to access it, it will interrupt the local handler only, not the one on the prod node. |
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I think is meant to handle CTRL+S not CTRL+C, but yes I think this only meant for attaching to a pipe, not remote console. |
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I think this makes sense since some times you need to |
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closing since #528 has been merged |
We run erlang in production and have noticed that it is quite easy to shoot yourself in the foot when accidentally typing ctrl-c or ctrl-s. Both of these shortcuts are easy to type if you are reaching for ctrl-a, ctrl-d or ctrl-r. ctrl-c by default will run the erlang emulator break handler that will pause the node. This can be destructive on a live system. ctrl-s will cause erlang to block flow control which has some very undesirable effects (see here: http://erlang.org/pipermail/erlang-patches/2010-March/000883.html)
The option to disable the break handler is commented out the vm_args file but you might want to make it the default.
I've also included a change to the script that will set the TERM variable to something sane. For example when deploying from capistrano this will be set to 'dumb' I think which causes problems when you attach to the node. However, it might be better to just hardcode TERM to a particular value. I'm not sure.