Schema Registry failed to start with confluence version 5.0.0

[rahulbhanushali]

I'm trying to run the confluent OSS platform locally following the instructions as described here: https://docs.confluent.io/current/quickstart/cos-quickstart.html#cos-quickstart

However on executing bin/confluent start schema registry fails to start. Here's the output of the command:

current dir: /var/folders/c8/q06dsl7s3jz0lqc6xvcpnqnm0000gp/T/
This CLI is intended for development only, not for production
https://docs.confluent.io/current/cli/index.html

Using CONFLUENT_CURRENT:
zookeeper is already running. Try restarting if needed
Starting kafka
kafka is [UP]
Starting schema-registry
\Schema Registry failed to start
schema-registry is [DOWN]
Cannot start Kafka Rest, Kafka Server is not running. Check your deployment

Logs of the schema registry are as below:

io.confluent.common.config.ConfigException: No supported Kafka endpoints are configured. Either kafkastore.bootstrap.servers must have at least one endpoint matching kafkastore.security.protocol or broker endpoints loaded from ZooKeeper must have at least one endpoint matching kafkastore.security.protocol.
    at io.confluent.kafka.schemaregistry.rest.SchemaRegistryConfig.endpointsToBootstrapServers(SchemaRegistryConfig.java:630)
    at io.confluent.kafka.schemaregistry.rest.SchemaRegistryConfig.bootstrapBrokers(SchemaRegistryConfig.java:570)
    at io.confluent.kafka.schemaregistry.storage.KafkaStore.<init>(KafkaStore.java:101)
    at io.confluent.kafka.schemaregistry.storage.KafkaSchemaRegistry.<init>(KafkaSchemaRegistry.java:139)
    at io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication.setupResources(SchemaRegistryRestApplication.java:59)
    at io.confluent.kafka.schemaregistry.rest.SchemaRegistryRestApplication.setupResources(SchemaRegistryRestApplication.java:41)
    at io.confluent.rest.Application.createServer(Application.java:169)
    at io.confluent.kafka.schemaregistry.rest.SchemaRegistryMain.main(SchemaRegistryMain.java:43)

Looking at the SchemaRegistry values displayed in the logs. Looks like the issue is with the kafkastore.bootstrap.servers = [] setting.

[rahulbhanushali]

The issue was with the etc/schema-registry/schema-registry.properties file. The line kafkastore.bootstrap.servers=PLAINTEXT://localhost:9092 was commented.

[OneCricketeer]

Looks like you already had zookeeper running.

But the issue can also be solved with this condition

broker endpoints loaded from ZooKeeper must have at least one endpoint matching kafkastore.security.protocol

[rahulbhanushali]

I doubt on that, from what I recall there was no zookeeper running. Also, I had tried the same setup on another machine and was facing the same problem.

However, the issue seems to have been resolved in the latest tar. Hence closing this.

[kemathur]

Same issue

[OneCricketeer]

@kemathur You're going to have to be more specific.

For example, the more information the better, e.g. OS version, Java version, Confluent & Kafka version. Property files. Commands used. Logs.

Please open a new issue including all of the above

[lucasscottiks]

Using CONFLUENT_CURRENT: /tmp/confluent.9YQRvpqd

For me helped just remove this directory "confluent.9YQRvpqd"

for now

[alecsolter]

@lucasscottiks by removing this directory you will lose all the topics you've created through the Control Center. There should be another way...

[punitgupta87]

I killed the processes , properly stopped ksql servert , kafka and stopped zookeeper but after all this when I try to restart ksql server I get the same error. I can delete all the data by : rm -rf /tmp/conf* but this will delete all the data and topics . Some file is getting corrupted here, please help .