[KAFKA-8381] SSL factory for inter-broker listener is broken

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: security
• Assignee: Rajini Sivaram
• Reporter: Rajini Sivaram
• Reviewer: Manikumar
• Created: 17/May/19 16:36
• Updated: 20/Mar/20 15:38
• Resolved: 20/May/19 16:02

Description

From a system test failure:

[2019-05-17 15:48:12,453] ERROR [KafkaServer id=1] Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
org.apache.kafka.common.KafkaException: org.apache.kafka.common.config.ConfigException: Invalid value javax.net.ssl.SSLHandshakeException: General SSLEngine problem for configuration A client SSLEngine created with the provided settings can't connect to a server SSLEngine created with those settings.
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:162)
        at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:146)
        at org.apache.kafka.common.network.ChannelBuilders.serverChannelBuilder(ChannelBuilders.java:85)
        at kafka.network.Processor.<init>(SocketServer.scala:747)
        at kafka.network.SocketServer.newProcessor(SocketServer.scala:388)
        at kafka.network.SocketServer.$anonfun$addDataPlaneProcessors$1(SocketServer.scala:282)
        at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:158)
        at kafka.network.SocketServer.addDataPlaneProcessors(SocketServer.scala:281)
        at kafka.network.SocketServer.$anonfun$createDataPlaneAcceptorsAndProcessors$1(SocketServer.scala:244)
        at kafka.network.SocketServer.$anonfun$createDataPlaneAcceptorsAndProcessors$1$adapted(SocketServer.scala:241)
        at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)
        at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)
        at kafka.network.SocketServer.createDataPlaneAcceptorsAndProcessors(SocketServer.scala:241)
        at kafka.network.SocketServer.startup(SocketServer.scala:120)
        at kafka.server.KafkaServer.startup(KafkaServer.scala:293)

Looks like the changes under https://github.com/apache/kafka/commit/0494cd329f3aaed94b3b46de0abe495f80faaedd added validation for inter-broker SSL factory with hostname verification enabled and `localhost` as the hostname. As a result, integration tests pass, but system tests fail.

Issue Links

• links to: GitHub Pull Request #6757