# Schema Registry Setup works from when app runs in local but fails when app is deployed to docker **URL:** \ **Category:** Schema Registry\ **Created:** [12 March 2023 06:16 UTC](https://forum.confluent.io/t/schema-registry-setup-works-from-when-app-runs-in-local-but-fails-when-app-is-deployed-to-docker/7394 "2023-03-12T06:16:12Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![mrdj](https://avatars.discourse-cdn.com/v4/letter/m/5f9b8f/32.png) [@mrdj](https://forum.confluent.io/u/mrdj)\ **Post date:** [12 March 2023 06:16 UTC](https://forum.confluent.io/t/schema-registry-setup-works-from-when-app-runs-in-local-but-fails-when-app-is-deployed-to-docker/7394/1 "2023-03-12T06:16:12Z")
I created a `kafka` service in docker which internally uses three images. Below are the images confluentinc/cp-zookeeper:latest confluentinc/cp-kafka:latest confluentinc/cp-schema-registry:latest My docker-compose.yml file looks like below ```auto --- version: '3.8' networks: learning: name: learning driver: bridge external: true services: zookeeper: image: confluentinc/cp-zookeeper:latest container_name: zookeeper hostname: zookeeper ports: - "2181:2181" networks: - learning environment: ZOOKEEPER_CLIENT_PORT: 2181 ZOOKEEPER_TICK_TIME: 2000 tmpfs: - "/datalog" broker: image: confluentinc/cp-kafka:latest container_name: broker hostname: broker networks: - learning ports: - "9092:9092" depends_on: - zookeeper environment: KAFKA_BROKER_ID: 1 KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://host.docker.internal:9092 KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true" KAFKA_NUM_PARTITIONS: 1 KAFKA_LOG_RETENTION_HOURS: 168 KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1 KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1 schema-registry: image: confluentinc/cp-schema-registry:latest container_name: schema-registry hostname: schema-registry networks: - learning depends_on: - broker ports: - "8081:8081" environment: SCHEMA_REGISTRY_HOST_NAME: schema-registry SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: PLAINTEXT://host.docker.internal:9092 kafka: producer: bootstrap-servers: host.docker.internal:9092 key-serializer: org.apache.kafka.common.serialization.StringSerializer value-serializer: io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer client-id: proto-topics compression-type: snappy properties: schema: registry: url: host.docker.internal:8081 ``` I have created an application that uses `kafka` service for messaging and uses `io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer` for value-serializer. Below are the configurations in `application.yml` in local, docker environments of spring-boot project where `local.yml` implies a producer application on local machine connecting to kafka service running in docker and `docker.yml` implies a producer application on docker container connecting to kafka service running in another container on docker (connected using an external network-bridge). local.yml ```auto kafka: producer: bootstrap-servers: host.docker.internal:9092 key-serializer: org.apache.kafka.common.serialization.StringSerializer value-serializer: io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer client-id: learning compression-type: snappy properties: schema: registry: url: http://localhost:8081 ``` docker.yml ```auto kafka: producer: bootstrap-servers: host.docker.internal:9092 key-serializer: org.apache.kafka.common.serialization.StringSerializer value-serializer: io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer client-id: learning compression-type: snappy properties: schema: registry: url: host.docker.internal:8081 ``` When application runs from local (using `local.yml` properties), am able to successfully produce messages to kafka, however when I do same from docker container (using `docker.yml` properties), I am getting below exception. And am unable to understand what change I should do to fix this issue ```auto learning | org.apache.kafka.common.KafkaException: Failed to construct kafka producer learning | at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:439) learning | at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:290) learning | at org.springframework.kafka.core.DefaultKafkaProducerFactory.createRawProducer(DefaultKafkaProducerFactory.java:843) learning | at org.springframework.kafka.core.DefaultKafkaProducerFactory.createKafkaProducer(DefaultKafkaProducerFactory.java:694) learning | at org.springframework.kafka.core.DefaultKafkaProducerFactory.doCreateProducer(DefaultKafkaProducerFactory.java:664) learning | at org.springframework.kafka.core.DefaultKafkaProducerFactory.createProducer(DefaultKafkaProducerFactory.java:639) learning | at org.springframework.kafka.core.DefaultKafkaProducerFactory.createProducer(DefaultKafkaProducerFactory.java:633) learning | at org.springframework.kafka.core.KafkaTemplate.getTheProducer(KafkaTemplate.java:754) learning | at org.springframework.kafka.core.KafkaTemplate.doSend(KafkaTemplate.java:638) learning | at org.springframework.kafka.core.KafkaTemplate.send(KafkaTemplate.java:409) learning | at learning.services.KafkaProducerService.sendMessage(KafkaProducerService.java:23) learning | at learning.services.LearningProcessor.lambda$updateLearnings$3(LearningProcessor.java:89) learning | at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:714) learning | at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) learning | at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1705) learning | at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1692) learning | at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) learning | at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020) learning | at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656) learning | at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594) learning | at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183) learning | Caused by: java.lang.ExceptionInInitializerError learning | at io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializer.configure(KafkaProtobufSerializer.java:68) learning | at org.apache.kafka.clients.producer.KafkaProducer.(KafkaProducer.java:375) learning | ... 20 more learning | Caused by: org.apache.kafka.common.config.ConfigException: Invalid value io.confluent.kafka.serializers.context.NullContextNameStrategy for configuration context.name.strategy: Class io.confluent.kafka.serializers.context.NullContextNameStrategy could not be found. learning | at org.apache.kafka.common.config.ConfigDef.parseType(ConfigDef.java:744) learning | at org.apache.kafka.common.config.ConfigDef$ConfigKey.(ConfigDef.java:1146) learning | at org.apache.kafka.common.config.ConfigDef.define(ConfigDef.java:152) learning | at org.apache.kafka.common.config.ConfigDef.define(ConfigDef.java:172) learning | at org.apache.kafka.common.config.ConfigDef.define(ConfigDef.java:211) learning | at org.apache.kafka.common.config.ConfigDef.define(ConfigDef.java:373) learning | at org.apache.kafka.common.config.ConfigDef.define(ConfigDef.java:386) learning | at io.confluent.kafka.serializers.AbstractKafkaSchemaSerDeConfig.baseConfigDef(AbstractKafkaSchemaSerDeConfig.java:277) learning | at io.confluent.kafka.serializers.protobuf.KafkaProtobufSerializerConfig.(KafkaProtobufSerializerConfig.java:47) learning | ... 22 more ``` Below are the dependencies in maven pom.xml ```auto 3.21.12 1.4 7.3.1 ``` Can you please advice?