failed on starting emqx in docker container

[kK]

Environment

• OS: Linux localhost.localdomain 3.10.0-1127.13.1.el7.x86_64 #1 SMP Tue Jun 23 15:46:38 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
• Erlang/OTP:
• EMQ: 4.2.2(using docker image emqx/emqx:4.2.2)

Description

I started an emqx container using docker-compose, with compose file:

version: '3.8'

services:
  emqx:
    image: emqx/emqx:4.2.2
    privileged: true
    volumes:
      - type: bind
        source: ./emqx.conf
        target: /opt/emqx/etc/emqx.conf
      - type: bind
        source: ./emqx_auth_redis.conf
        target: /opt/emqx/etc/plugins/emqx_auth_redis.conf
      - type: bind
        source: ./certs
        target: /certs
    restart: always
    container_name: probe-emqx
    network_mode: host
    environment:
      - WAIT_FOR_ERLANG=30

and the container crashed finally, with ouput as following:

node.max_ports=1048576
listener.tcp.external.acceptors=64
listener.ssl.external.acceptors=32
node.process_limit=2097152
node.max_ets_tables=2097152
listener.ws.external.acceptors=16
EMQ X Broker 4.2.2 failed to start within 30 seconds,
see the output of '/opt/emqx/bin/emqx console' for more information.
If you want to wait longer, set the environment variable
WAIT_FOR_ERLANG to the number of seconds to wait.

=====
===== LOGGING STARTED Tue Nov 10 08:43:53 UTC 2020
=====
Exec: /opt/emqx/erts-10.7.2.1/bin/erlexec -boot /opt/emqx/releases/4.2.2/emqx -mode embedded -boot_var ERTS_LIB_DIR /opt/emqx/erts-10.7.2.1/../lib -mnesia dir "/opt/emqx/data/mnesia/localhost.localdomain@127.0.0.1" -config /opt/emqx/data/configs/app.2020.11.10.08.43.53.config -args_file /opt/emqx/data/configs/vm.2020.11.10.08.43.53.args -vm_args /opt/emqx/data/configs/vm.2020.11.10.08.43.53.args -start_epmd false -epmd_module ekka_epmd -proto_dist ekka -- console
Root: /opt/emqx
/opt/emqx
{"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,[]]}}}"}
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}}}}},{ker

Crash dump is being written to: log/crash.dump...done
['2020-11-10T08:44:43Z']:emqx exit abnormally

but the same compose file and the mounted files(emqx.conf and emqx_auth_redis.conf and certs) on my mac works fine(with docker desktop). Are there anything misconfigured please?

[JianBo He]

Hi @kk71 It seems that your node name localhost.localdomain is illegal. The . is not allowed in the name.

You can try to specific a Node name with EMQX_NODE__NAME environment

[kK]

Hi @kk71 It seems that your node name localhost.localdomain is illegal. The . is not allowed in the name.

You can try to specific a Node name with EMQX_NODE__NAME environment

Finally I found out that the problem is caused by the network mode. I used 'host' to startup the container and it turns out failed but, when I use bridge mode, it's OK(and I haven't see any logs about port occupation etc.)