Failed to start mqtt:ws listener on ::1:8083 - {{shutdown,^M
{failed_to_start_child,^M
ranch_acceptors_sup,badarg}},^M
{child,undefined,^M
{ranch_listener_sup,^M
'mqtt:ws:8083'},^M
{ranch_listener_sup,^M
start_link,^M
['mqtt:ws:8083',ranch_tcp,^M
#{connection_type =>^M
supervisor,^M
max_connections => 102400,^M
num_acceptors => 4,^M
socket_opts =>^M
[{ip,"::1"},^M
{port,8083},^M
{backlog,1024},^M
{send_timeout,15000},^M
{send_timeout_close,^M
true},^M
{nodelay,true}]},^M
cowboy_clear,^M
#{connection_type =>^M
supervisor,^M
env =>^M
#{dispatch =>^M
[{'_',[],^M
[{[<<"mqtt">>],^M
[],^M
emqx_ws_connection,^M
[{deflate_options,^M
[]},^M
{tcp_options,^M
[{backlog,1024},^M
{send_timeout,^M
15000},^M
{send_timeout_close,^M
true},^M
{nodelay,^M
true}]},^M
{acceptors,4},^M
{mqtt_path,^M
"/mqtt"},^M
{max_connections,^M
102400},^M
{max_conn_rate,^M
1000},^M
{active_n,100},^M
{zone,external},^M
{verify_protocol_header,^M
true},^M
{access_rules,^M
[{allow,^M
all}]}]}]}]},^M
proxy_header => false}]},^M
permanent,infinity,^M
supervisor,^M
[ranch_listener_sup]}}^M
配置端口的地方 你配置完整IP 或者把IP给去掉。 备注：4.0.2已经退市不再维护了
对于8083端口
1、不配置IP，启动emqx后默认还是ipv4的地址，样式0.0.0.0:8083
2、配置完整的Ip地址，还是报错，报错信息和上面展示几乎一致