From 7231ee8eb29da0946792aef6ac155f9e31fb37ed Mon Sep 17 00:00:00 2001 From: Ben Murphy Date: Tue, 9 Aug 2016 15:45:25 +0100 Subject: disable ctrl-s block node feature (see: http://erlang.org/pipermail/erlang-patches/2010-March/000883.html) --- priv/templates/extended_bin | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'priv/templates') diff --git a/priv/templates/extended_bin b/priv/templates/extended_bin index ddecc8b..2630bbf 100755 --- a/priv/templates/extended_bin +++ b/priv/templates/extended_bin @@ -2,6 +2,17 @@ set -e +# http://erlang.org/doc/man/run_erl.html +# If defined, disables input and output flow control for the pty +# opend by run_erl. Useful if you want to remove any risk of accidentally +# blocking the flow control by using Ctrl-S (instead of Ctrl-D to detach), +# which can result in blocking of the entire Beam process, and in the case +# of running heart as supervisor even the heart process becomes blocked +# when writing log message to terminal, leaving the heart process unable +# to do its work. +RUN_ERL_DISABLE_FLOWCNTRL=${RUN_ERL_DISABLE_FLOWCNTRL:-true} +export $RUN_ERL_DISABLE_FLOWCNTRL + SCRIPT=$(readlink $0 || true) if [ -z $SCRIPT ]; then SCRIPT=$0 -- cgit v1.2.3 From 74b74a46de19f7630694646307cfd4dbd5552ea3 Mon Sep 17 00:00:00 2001 From: Ben Murphy Date: Tue, 9 Aug 2016 15:46:07 +0100 Subject: ensure an appropriate TERM var is set useful if deploying erlang nodes via capistrano when TERM is not set correctly attaching to the node will result in weirdness --- priv/templates/extended_bin | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'priv/templates') diff --git a/priv/templates/extended_bin b/priv/templates/extended_bin index 2630bbf..06c7242 100755 --- a/priv/templates/extended_bin +++ b/priv/templates/extended_bin @@ -13,6 +13,10 @@ set -e RUN_ERL_DISABLE_FLOWCNTRL=${RUN_ERL_DISABLE_FLOWCNTRL:-true} export $RUN_ERL_DISABLE_FLOWCNTRL +if [ "$TERM" = "dumb" -o -z "$TERM" ]; then + export TERM=screen +fi + SCRIPT=$(readlink $0 || true) if [ -z $SCRIPT ]; then SCRIPT=$0 -- cgit v1.2.3 From 26ccfa12364422109d44a0b49027fe48f929249c Mon Sep 17 00:00:00 2001 From: Ben Murphy Date: Tue, 9 Aug 2016 15:49:26 +0100 Subject: add commented out +Bi option +Bi disables the erlang break functionality --- priv/templates/vm_args | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'priv/templates') diff --git a/priv/templates/vm_args b/priv/templates/vm_args index 02841bd..f65c7dc 100644 --- a/priv/templates/vm_args +++ b/priv/templates/vm_args @@ -17,3 +17,14 @@ ## Tweak GC to run more often ##-env ERL_FULLSWEEP_AFTER 10 + +# +B [c | d | i] +# Option c makes Ctrl-C interrupt the current shell instead of invoking the emulator break +# handler. Option d (same as specifying +B without an extra option) disables the break handler. # Option i makes the emulator ignore any break signal. +# If option c is used with oldshell on Unix, Ctrl-C will restart the shell process rather than +# interrupt it. +# Disable the emulator break handler +# it easy to accidentally type ctrl-c when trying +# to reach for ctrl-d. ctrl-c on a live node can +# have very undesirable results +##+Bi -- cgit v1.2.3