Cassandra Integrated Auth for JMX

[Cyril Scetbon]

Hey guys,

I’ve followed 
https://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/secureJmxAuthentication.html
 to setup JMX with Cassandra’s internal auth using Cassandra 3.11.3

However I still can connect to JMX without authenticating. You can see in the 
following attempts that authentication is set up :

cassandra@ 2a1d064ce844 / $ cqlsh -u cassandra -p cassandra
Connected to MyCluster at 127.0.0.1:9042.
[cqlsh 5.0.1 | Cassandra 3.11.3 | CQL spec 3.4.4 | Native protocol v4]
Use HELP for help.
cassandra@cqlsh>

cassandra@ 2a1d064ce844 / $ cqlsh -u cassandra -p cassandra2
Connection error: ('Unable to connect to any servers', {'127.0.0.1': 
AuthenticationFailed('Failed to authenticate to 127.0.0.1: Error from server: 
code=0100 [Bad credentials] message="Provided username cassandra and/or 
password are incorrect"',)})

Here is my whole JVM's configuration :

-Xloggc:/var/log/cassandra/gc.log, -XX:+UseThreadPriorities, 
-XX:ThreadPriorityPolicy=42, -XX:+HeapDumpOnOutOfMemoryError, -Xss256k, 
-XX:StringTableSize=1000003, -XX:+AlwaysPreTouch, -XX:-UseBiasedLocking, 
-XX:+UseTLAB, -XX:+ResizeTLAB, -Djava.net.preferIPv4Stack=true, -Xms128M, 
-Xmx128M, -XX:+UseG1GC, -XX:G1RSetUpdatingPauseTimePercent=5, 
-XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintHeapAtGC, 
-XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, 
-XX:+PrintPromotionFailure, 
-javaagent:/usr/local/share/jolokia-agent.jar=host=0.0.0.0,executor=fixed, 
-javaagent:/usr/local/share/prometheus-agent.jar=1234:/etc/cassandra/prometheus.yaml,
 -XX:+PrintCommandLineFlags, -Xloggc:/var/lib/cassandra/log/gc.log, 
-XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=10, -XX:GCLogFileSize=10M, 
-Dcassandra.migration_task_wait_in_seconds=1, -Dcassandra.ring_delay_ms=30000, 
-XX:CompileCommandFile=/etc/cassandra/hotspot_compiler, 
-javaagent:/usr/share/cassandra/lib/jamm-0.3.0.jar, 
-Dcassandra.jmx.remote.port=7199, -Dcom.sun.management.jmxremote.rmi.port=7199, 
-Djava.library.path=/usr/share/cassandra/lib/sigar-bin, 
-Dcom.sun.management.jmxremote.authenticate=true, 
-Dcassandra.jmx.remote.login.config=CassandraLogin, 
-Djava.security.auth.login.config=/etc/cassandra/cassandra-jaas.config, 
-Dcassandra.jmx.authorizer=org.apache.cassandra.auth.jmx.AuthorizationProxy, 
-Dcom.sun.management.jmxremote, -Dcom.sun.management.jmxremote.ssl=false, 
-Dcom.sun.management.jmxremote.local.only=false, 
-Dcassandra.jmx.remote.port=7199, -Dcom.sun.management.jmxremote.rmi.port=7199, 
-Djava.rmi.server.hostname= 2a1d064ce844, 
-Dcassandra.libjemalloc=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1, 
-XX:OnOutOfMemoryError=kill -9 %p, -Dlogback.configurationFile=logback.xml, 
-Dcassandra.logdir=/var/log/cassandra, 
-Dcassandra.storagedir=/var/lib/cassandra, -Dcassandra-foreground=yes

But I still can query JMX without authenticating :

echo '{"mbean": "org.apache.cassandra.db:type=StorageService", "attribute": 
"OperationMode", "type": "read"}' | http -a cassandra:cassandra POST 
http://localhost:8778/jolokia/
HTTP/1.1 200 OK
Cache-control: no-cache
Content-type: text/plain; charset=utf-8
Date: Sun, 16 Dec 2018 05:15:36 GMT
Expires: Sun, 16 Dec 2018 04:15:36 GMT
Pragma: no-cache
Transfer-encoding: chunked

{
    "request": {
        "attribute": "OperationMode",
        "mbean": "org.apache.cassandra.db:type=StorageService",
        "type": "read"
    },
    "status": 200,
    "timestamp": 1544937336,
    "value": "NORMAL"
}


I also have to add that I had to change permissions on the file 
$JAVA_HOME/lib/management/jmxremote.password which is weird as it should not be 
used in that case, but Cassandra was complaining before I did it.

Is there anything I'm missing ?

Thanks
—
Cyril Scetbon