Kafka coredump created for topic list command on Kafka broker

[raz08]

Description

Tried to list kafka topics from the Kafka broker by exec into one of the broker pod. Got error with address bind exception and created coredump.

$kubectl exec -ti kafka-0-wmdcv -n kafka -- sh
#/opt/kafka/bin/kafka-topics.sh --bootstrap-server=kafka-headless.kafka.svc.cluster.local:29092 --list

`

Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(Unknown Source)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(Unknown Source)
Caused by: java.net.BindException: Address already in use
at java.base/sun.nio.ch.Net.bind0(Native Method)
at java.base/sun.nio.ch.Net.bind(Unknown Source)
at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(Unknown Source)
at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
at java.base/sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
at jdk.httpserver/sun.net.httpserver.ServerImpl.(Unknown Source)
at jdk.httpserver/sun.net.httpserver.HttpServerImpl.(Unknown Source)
at jdk.httpserver/sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(Unknown Source)
at jdk.httpserver/com.sun.net.httpserver.HttpServer.create(Unknown Source)
at io.prometheus.jmx.shaded.io.prometheus.client.exporter.HTTPServer.(HTTPServer.java:176)
at io.prometheus.jmx.shaded.io.prometheus.jmx.JavaAgent.premain(JavaAgent.java:31)
... 6 more
*** java.lang.instrument ASSERTION FAILED ***: "result" with message agent load/premain call failed at ../src/java.instrument/share/native/libinstrument/JPLISAgent.c line: 422
FATAL ERROR in native method: processing of -javaagent failed, processJavaStart failed
Aborted (core dumped)
`

Expected Behavior

For any wrong command given by user there should not be any coredumps or crash

Actual Behavior

Coredump created for wrong or unknown command or addressbind exception

Affected Version

Please provide the version number where this issue was encountered.

Steps to Reproduce

1. First step
2. Second step
3. etc.

Checklist

• I have read the contributing guidelines
• I have verified this does not duplicate an existing issue

[bartam1]

Hello!
You need to unset the KAFKA_OPTS env variable first.
Please try this: #unset KAFKA_OPTS