[erlang-questions] supervisor not restarting gen_server

Per Melin <>
Sun May 6 00:17:20 CEST 2012

On May 5, 2012, at 21:07 , Robert Virding wrote:

> A quick look seems to indicate that both a server and a supervisor, cowboy_listener_sup, crashed. It was another supervisor, cowboy_sup, which reports the death of cowboy_listener_sup. From where is your gene_server started?

Since cowboy_sup received an exit signal of 'killed' from cowboy_listener_sup, doesn't that imply that it was (explicitly) killed with exit(Pid, kill)?

>> I have a gen_server that seems to be crashing for some reason and the supservisor is not restarting it.  The child spec is one_for_one, permanent and the error log is below.  All i see is the crash report but no attempt at a restart.  Is there any way to figure out why the supervisor would not restart it?
>> 2012-05-02 14:54:28.776 [info] <0.889.0>@websocket_pubsubsrv:terminate:198 Shutting down pubsub server...
>> 2012-05-02 14:54:28.776 [error] <0.882.0> Supervisor cowboy_sup had child {cowboy_listener_sup,my_http_listener} started with cowboy_listener_sup:start_link(100, cowboy_tcp_transport, [{port,8000}], cowboy_http_protocol, [{dispatch,[{'_',[{[<<"multiplex">>,'...'],sockjs_cowboy_handler,{service,"/multiplex",sockjs_multiplex,...}},...]}]}]) at <0.909.0> exit with reason killed in context child_terminated
>> 2012-05-02 14:54:28.785 [error] <0.911.0> gen_server <0.911.0> terminated with reason: killed
>> 2012-05-02 14:54:28.788 [error] <0.911.0> CRASH REPORT Process <0.911.0> with 1 neighbours crashed with reason: {killed,[{gen_server,terminate,6},{proc_lib,init_p_do_apply,3}]}
>> Thanks
>> -AD
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