Help decipher an error

[Adriaan Tijsseling]

I have no luck starting up disco on a linux box. I get:

sudo -E disco master nodaemon
{error_logger,{{2009,9,16},{20,30,24}},"Protocol: ~p: register error:
~p~n",["inet_tcp",{{badmatch,{error,duplicate_name}},
[{inet_tcp_dist,listen,1},{net_kernel,start_protos,4},
{net_kernel,start_protos,3},{net_kernel,init_node,2},{net_kernel,init,
1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}]}
{error_logger,{{2009,9,16},{20,30,24}},crash_report,[[{initial_call,
{net_kernel,init,['Argument__1']}},{pid,<0.20.0>},{registered_name,[]},
{error_info,{exit,{error,badarg},[{gen_server,init_it,6},
{proc_lib,init_p_do_apply,3}]}},{ancestors,
[net_sup,kernel_sup,<0.8.0>]},{messages,[]},{links,
[#Port<0.84>,<0.17.0>]},{dictionary,[{longnames,false}]},
{trap_exit,true},{status,running},{heap_size,610},{stack_size,24},
{reductions,511}],[]]}
{error_logger,{{2009,9,16},{20,30,24}},supervisor_report,[{supervisor,
{local,net_sup}},{errorContext,start_error},{reason,
{'EXIT',nodistribution}},{offender,[{pid,undefined},{name,net_kernel},
{mfa,{net_kernel,start_link,[[disco_4444_master,shortnames]]}},
{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]}
{error_logger,{{2009,9,16},{20,30,24}},supervisor_report,[{supervisor,
{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},
{offender,[{pid,undefined},{name,net_sup},{mfa,
{erl_distribution,start_link,[]}},{restart_type,permanent},
{shutdown,infinity},{child_type,supervisor}]}]}
{error_logger,{{2009,9,16},{20,30,24}},std_info,[{application,kernel},
{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]}
{"Kernel pid
terminated",application_controller,"{application_start_failure,kernel,
{shutdown,{kernel,start,[normal,[]]}}}"}
Kernel pid terminated (application_controller)
({application_start_failure,kernel,{shutdown,{kernel,start,[normal,
[]]}}})
Failed to start disco master

What does the error mean?

[Gleb Peregud]

Hello

It means that you are trying Erlang node which has the same name as
one already running. Probably you have a disco master already running
(with the same erlang node name).

Best,
Gleb Peregud

[Adriaan Tijsseling]

There was no master running, but there was a epmd process running.
That doesn't get killed when shutting down a master. I killed it
manually then it I could start up the master.