Hi,
Yes, this needs to be handled more elegantly. Can you please file a JIRA
here
https://issues.apache.org/jira/projects/KAFKA/issues
Thanks,
Harsha
On Mon, Apr 1, 2019, at 1:52 AM, jorg.heym...@gmail.com wrote:
> Hi,
>
> We have our brokers secured with these standard properties
>
> listeners=SSL://a.b.c:9030
> ssl.truststore.location=...
> ssl.truststore.password=...
> ssl.keystore.location=...
> ssl.keystore.password=...
> ssl.key.password=...
> ssl.client.auth=required
> ssl.enabled.protocols=TLSv1.2
>
> It's a bit surprising to see that when a (java) client attempts to
> connect without having SSL configured, so doing a PLAINTEXT connection
> instead, it does not get a TLS exception indicating that SSL is
> required. Somehow i would have expected a hard transport-level
> exception making it clear that non-SSL connections are not allowed,
> instead the client sees this (when debug logging is enabled)
>
> [main] INFO org.apache.kafka.common.utils.AppInfoParser - Kafka
> commitId : 21234bee31165527
> [main] DEBUG org.apache.kafka.clients.consumer.KafkaConsumer -
> [Consumer clientId=consumer-1, groupId=my-test-group] Kafka consumer
> initialized
> [main] DEBUG org.apache.kafka.clients.consumer.KafkaConsumer -
> [Consumer clientId=consumer-1, groupId=my-test-group] Subscribed to
> topic(s): events
> [main] DEBUG
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator -
> [Consumer clientId=consumer-1, groupId=my-test-group] Sending
> FindCoordinator request to broker a.b.c:9030 (id: -1 rack: null)
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Initiating connection to
> node a.b.c:9030 (id: -1 rack: null) using address /a.b.c
> [main] DEBUG org.apache.kafka.common.metrics.Metrics - Added sensor
> with name node--1.bytes-sent
> [main] DEBUG org.apache.kafka.common.metrics.Metrics - Added sensor
> with name node--1.bytes-received
> [main] DEBUG org.apache.kafka.common.metrics.Metrics - Added sensor
> with name node--1.latency
> [main] DEBUG org.apache.kafka.common.network.Selector - [Consumer
> clientId=consumer-1, groupId=my-test-group] Created socket with
> SO_RCVBUF = 65536, SO_SNDBUF = 131072, SO_TIMEOUT = 0 to node -1
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Completed connection to
> node -1. Fetching API versions.
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Initiating API versions
> fetch from node -1.
> [main] DEBUG org.apache.kafka.common.network.Selector - [Consumer
> clientId=consumer-1, groupId=my-test-group] Connection with /a.b.c
> disconnected
> java.io.EOFException
> at
> org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:119)
> at
> org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:381)
> at
> org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:342)
> at
> org.apache.kafka.common.network.Selector.attemptRead(Selector.java:609)
> at
> org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:541)
> at org.apache.kafka.common.network.Selector.poll(Selector.java:467)
> at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:535)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:265)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:236)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:215)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:231)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:316)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.updateAssignmentMetadataIfNeeded(KafkaConsumer.java:1214)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1179)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1164)
> at eu.europa.ec.han.TestConsumer.main(TestConsumer.java:22)
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Node -1 disconnected.
> [main] DEBUG
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient -
> [Consumer clientId=consumer-1, groupId=my-test-group] Cancelled request
> with header RequestHeader(apiKey=FIND_COORDINATOR, apiVersion=2,
> clientId=consumer-1, correlationId=0) due to node -1 being disconnected
> [main] DEBUG
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator -
> [Consumer clientId=consumer-1, groupId=my-test-group] Coordinator
> discovery failed, refreshing metadata
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Give up sending metadata
> request since no node is available
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Give up sending metadata
> request since no node is available
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Give up sending metadata
> request since no node is available
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Initialize connection to
> node a.b.c:9030 (id: -1 rack: null) for sending metadata request
> [main] DEBUG org.apache.kafka.clients.NetworkClient - [Consumer
> clientId=consumer-1, groupId=my-test-group] Initiating connection to
> node a.b.c:9030 (id: -1 rack: null) using address /a.b.c
>
>
