Hi,

I am getting the following error while connecting to kafka running in docker and port forwarded to localhost. I can shell into the docker and get topics etc. I’ve tested localhost:9092 using kafkacat and am able to list the topics etc.

00:52:17.966 [info]  Group member (some_group,coor=#PID<0.261.0>,cb=#PID<0.256.0>,generation=0):
failed to join group
reason: {:nxdomain,
 [
   {:kpro_connection, :connect, 4,
    [
      file: '/home/bw/deps/kafka_protocol/src/kpro_connection.erl',
      line: 208
    ]},
   {:kpro_connection, :init, 4,
    [
      file: '/home/bw/deps/kafka_protocol/src/kpro_connection.erl',
      line: 170
    ]},
   {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 240]}
 ]}

00:52:17.967 [info]  Group member (some_group,coor=#PID<0.261.0>,cb=#PID<0.256.0>,generation=0):
Leaving group, reason: :shutdown

Config is

producer: [                               
  module: {BroadwayKafka.Producer, [      
    hosts: [localhost: 9092],             
    group_id: "some_group",               
    topics: ["some_topic"],                    
    partition: 0,                         
  ]},                                     
  concurrency: 1                          
],                                        
processors: [                             
  default: [                              
    concurrency: 10                       
  ]                                       
]