September 2013
Intermediate to advanced
548 pages
12h 25m
English
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When Things Go Wrong
This section lists some common problems (and their solutions).
Stopping Erlang
Erlang can sometimes be difficult to stop. Here are a number of possible reasons:
-
The shell is not responding.
-
The Ctrl+C handler has been disabled.
-
Erlang has been started with the
-detachedflag, so you may not be aware that it is running. -
Erlang has been started with the
-heart Cmdoption. This option causes an OS monitor process to be set up that watches over the Erlang OS process. If the Erlang OS process dies, thenCmdis evaluated. OftenCmdwill simply restart the Erlang system. This is one of the tricks we use when making fault-tolerant nodes—if Erlang itself dies (which should never happen), it just gets restarted. The trick here is ...
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