Create subjects automatically from Schema Registry - Subject not found - apache-kafka

Question

I have Schema Registry container http://registry-server:8081
ProducerConfig:
bootstrap.servers : [PLAINTEXT://kafka-server:9092]
value.serializer : class org.apache.kafka.common.serialization.ByteArraySerializer
and a Standalone service that acts as a producer and has its property set as below
Producer
"schema.registry.url", "http://registry-server:8081"
"bootstrap.servers", "http://kafka-server:9092
"value.converter.value.subject.name.strategy", true
"auto.register.schemas", false
"value.serializer", DelegatingSerialzer.class
KafkaAvroSerializerConfig
value.subject.name.strategy = class io.confluent.kafka.serializers.subject.TopicNameStrategy
key.subject.name.strategy = class io.confluent.kafka.serializers.subject.TopicNameStrategy
But when the Standalone service attempt to send a request to schema registry, something like below
http://registry-server:8081/subjects/topicName-value?deleted=false
I constantly receive Subject Not Found error.
Is it because auto.register.schemas is set to false in the Producer from standalone service and that's why it is failing to create subjects ?
How can I auto register schema and auto create Subject from the Schema Registry service ?
btw, kafka, schema-registery and standalone-app are containers

Answer 1

Is it because auto.register.schemas is set to false in the Producer from standalone service and that's why it is failing to create subjects ?
Probably
auto register schema and auto create Subject from the Schema Registry service ?
You can't. The registry needs to have external POST HTTP requests sent to it to create schemas for subjects. You cannot create subject without any schema.
The registry itself doesn't start with any schema, usually only your client applications do, so there is nothing it can (auto) register itself.