no resolver defined to resolve "name"

[esha-]

Hello! May be you can help me. I have some producer:

 local broker_list = {
    { host = "127.0.0.1", port = 9092 }
 }
local p = producer:new(broker_list)
local key = "key"
local mess = "hi"
local offset, err = p:send('test', key, mess)

I get responce: no resolver defined to resolve "esha" I searched about nginx resolver, but not solve my problem. In my /etc/resolv.conf: nameserver 127.0.1.1 In my /etc/hosts:

127.0.0.1   localhost
::1         localhost
27.0.1.1   esha

Where "esha" in error? If i have "localhost" in broker list ?

Now, i solve problem use "stub" in /producer.lua:

129     local config = brokers[leader]
130     
131     config.host = "127.0.0.1"
132     local bk = broker:new(config.host, config.port, self.socket_config)
133     self.producer_brokers[leader] = bk
134     
135     return bk

What would you recommend?

[doujiang24]

first, we request for the metadata through the kafka metadata api, and kafka return the host "esha", this is ok but nginx can not resolver "esha" that because nginx can only resolver a name from dns server ( yeah, even can not resolver from /etc/hosts)

the simple way is config host.name in config/server.properties to kafka server, may be:

host.name=127.0.0.1

this means we direct use ip instead http://kafka.apache.org/documentation.html#brokerconfigs

another may is to build a dns server can resolver "esha", and config reslover to it in nginx.conf

thanks for your feedback, I'll add a notice in README :)

[esha-]

Thanks=) Your answer is very useful for me! Also I found another way. I added in nginx.conf (http block): resolver 127.0.1.1; such as ip in my /etc/resolv.conf.

[doujiang24]

Consider it resolved.

[lanjingling]

i have a same problem,i am use this way: modify server.properties in kafka server, add:listeners=PLAINTEXT://kafkaip:9092

[takeoto]

Have the same problem with docker. And [resolver 127.0.0.11 valid=10s;] doesn't help.

# cat /etc/resolv.conf 
nameserver 127.0.0.11

But I can send messages directly from the container (host in extra_hosts [yml]). Does anyone know how to solve it?