I am trying to deploy a Phoenix app using exrm and conform. Testing the release on local Ubuntu works. But when i run the same on server there is failure. I am not able to understand the exact cause.
{error_logger,{{2016,1,30},{7,45,44}},"Protocol: ~tp: register/listen error: ~tp~n",["inet_tcp",etimedout]} {error_logger,{{2016,1,30},{7,45,44}},crash_report,[[{initial_call,{net_kernel,init,['Argument__1']}},{pid,<0.22.0>},{registered_name,[]},{error_info,{exit,{error,badarg},[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,344}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,240}]}]}},{ancestors,[net_sup,kernel_sup,<0.10.0>]},{messages,[]},{links,[#Port<0.380>,<0.19.0>]},{dictionary,[{longnames,true}]},{trap_exit,true},{status,running},{heap_size,987},{stack_size,27},{reductions,842}],[]]} {error_logger,{{2016,1,30},{7,45,44}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{id,net_kernel},{mfargs,{net_kernel,start_link,[['app@127.0.0.1',longnames]]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]} {error_logger,{{2016,1,30},{7,45,44}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}},{offender,[{pid,undefined},{id,net_sup},{mfargs,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]} {error_logger,{{2016,1,30},{7,45,44}},crash_report,[[{initial_call,{application_master,init,['Argument__1','Argument__2','Argument__3','Argument__4']}},{pid,<0.9.0>},{registered_name,[]},{error_info,{exit,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}},{kernel,start,[normal,[]]}},[{application_master,init,4,[{file,"application_master.erl"},{line,134}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,240}]}]}},{ancestors,[<0.8.0>]},{messages,[{'EXIT',<0.10.0>,normal}]},{links,[<0.8.0>,<0.7.0>]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,376},{stack_size,27},{reductions,117}],[]]} {error_logger,{{2016,1,30},{7,45,44}},std_info,[{application,kernel},{exited,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}},{kernel,start,[normal,[]]}}},{type,permanent}]} {"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}},{kernel,start,[normal,[]]}}}"}
Crash dump is being written to: erl_crash.dump...Kernel pid terminated (application_controller) ({application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}},{k
The error reason is usually at the first line of error and crashdump:
{error_logger,{{2016,1,30},{7,45,44}},"Protocol: ~tp: register/listen error: ~tp~n",["inet_tcp",etimedout]}...
({application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,net_kernel,{'EXIT',nodistribution}}}}}...
During startup there was error while opening listen socket with timeout etimedout. This may be caused by couple of things:
iex starts your app with dev environment, while exrm uses prod.
Compare your dev and prod settings. Probably there are different ports defined. Try running your app with iex, but with prod environment.
MIX_ENV=prod iex -S mix phoenix.server
Remember that generated release has all the config values evaluated during creation and hardcoded.