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Kafka client code does not currently support obtaining a password from the user

Kafka client code does not currently support obtaining a password from the user

Expert Contributor

I'm getting below error message while trying to produce data from kafka topic in the kerberized HDP cluster.

Error:

DEBUG [Producer clientId=console-producer] Kafka producer has been closed (org.apache.kafka.clients.producer.KafkaProducer)
org.apache.kafka.common.KafkaException: Failed to construct kafka producer
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
Caused by: org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner authentication information from the user

Stack:

 

HDP 3.1.0
Kafka 1.0.0.3.1
$KAFKA_HOME="/usr/hdp/3.1.0.0-78/kafka"
$BROKER_LIST="<broker-list>"
$ZK_HOSTS="<zk-host-list>:2181/kafka"
$export KAFKA_OPTS="-Djava.security.auth.login.config=/home/<user>/jaas.conf -Djava.security.krb5.conf=/etc/krb5.conf -Djavax.security.auth.useSubjectCredsOnly=true -Dsun.security.krb5.debug=true"
$export KAFKA_CLIENT_KERBEROS_PARAMS="-Djava.security.auth.login.config=/home/<user>/jaas.conf -Dsun.security.krb5.debug=true" 

 

$cat jaas.conf

---using user keytab & principal for authentication and disabled useTicketCache---

 

KafkaClient {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/<user>/user.keytab"
storeKey=true
useTicketCache=false
serviceName="kafka"
principal="user@domain.COM";
};
Client {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/<user>/user.keytab"
storeKey=true
useTicketCache=false
serviceName="zookeeper"
principal="user@domain.COM";
};

 

$cat client.properties

 

security.protocol=SASL_PLAINTEXT
sasl.mechanism=GSSAPI
sasl.kerberos.service.name=kafka

 

$klist

 

~]$ klist
klist: No credentials cache found (filename: /tmp/krb5cc_121852)

 

$kafka-console-producer.sh

 

$KAFKA_HOME/bin/kafka-console-producer.sh --broker-list <broker-list>:9092 --topic testtopic --producer.config /home/<user>/client.properties

 

full error log:

[2019-11-23 10:05:45,614] DEBUG Added sensor with name bufferpool-wait-time (org.apache.kafka.common.metrics.Metrics)
[2019-11-23 10:05:45,617] DEBUG Added sensor with name buffer-exhausted-records (org.apache.kafka.common.metrics.Metrics)
[2019-11-23 10:05:45,620] DEBUG Updated cluster metadata version 1 to Cluster(id = null, nodes = [sl975iaehdp0401.visa.com:9092 (id: -1 rack: null)], partitions = [], controller = null) (org.apache.kafka.clients.Metadata)
[2019-11-23 10:05:45,637] INFO [Producer clientId=console-producer] Closing the Kafka producer with timeoutMillis = 0 ms. (org.apache.kafka.clients.producer.KafkaProducer)
[2019-11-23 10:05:45,638] DEBUG [Producer clientId=console-producer] Kafka producer has been closed (org.apache.kafka.clients.producer.KafkaProducer)
org.apache.kafka.common.KafkaException: Failed to construct kafka producer
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:304)
at kafka.tools.ConsoleProducer$.main(ConsoleProducer.scala:45)
at kafka.tools.ConsoleProducer.main(ConsoleProducer.scala)
Caused by: org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner authentication information from the user
at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:153)
at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:140)
at org.apache.kafka.common.network.ChannelBuilders.clientChannelBuilder(ChannelBuilders.java:65)
at org.apache.kafka.clients.ClientUtils.createChannelBuilder(ClientUtils.java:88)
at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:414)
... 3 more
Caused by: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner authentication information from the user
at com.sun.security.auth.module.Krb5LoginModule.promptForPass(Krb5LoginModule.java:940)
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:760)
at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
at org.apache.kafka.common.security.authenticator.AbstractLogin.login(AbstractLogin.java:60)
at org.apache.kafka.common.security.kerberos.KerberosLogin.login(KerberosLogin.java:103)
at org.apache.kafka.common.security.authenticator.LoginManager.<init>(LoginManager.java:65)
at org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:125)
at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:142)
... 7 more

 

Could you please help on this.

Thank you.

6 REPLIES 6

Re: Kafka client code does not currently support obtaining a password from the user

Rising Star

@sampathkumar_ma 

 

Could you please check if the user running the command has permissions to get a valid ticket from: "/home/<user>/user.keytab"

 

Also, add "debug=true" in the jaas file to get more details:

 

KafkaClient {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/<user>/user.keytab"
storeKey=true
debug=true
useTicketCache=false
serviceName="kafka"
principal="user@domain.COM";
};

 

Re: Kafka client code does not currently support obtaining a password from the user

Expert Contributor

Hi @ManuelCalvo ,

 

Yes, keytab has right permission to get the valid ticket. I tried taking the ticket manually & it works fine.

 

What I observed here was environment variable KAFKA_OPTS was ignored by kafka clients.The console producer/consumer should work with the KAFKA_OPTS environment variable that is expected to have priority over the system variables;

 

 I exported KAFKA_OPTS pointing to the JAAS file and Kerberos client configuration file, but it's not working!!!!!

Kafka-version : 2.0.0.3

 

export KAFKA_OPTS="-Djava.security.auth.login.config=/home/<user>/jaas.conf -Djava.security.krb5.conf=/etc/krb5.conf"

 

error: 

Caused by: org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner  authentication information from the user
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:153)

If I pass SASL parameters as below in the client.properties, I'm able to produce/consume data from Topics without any issue.

 

$KAFKA_HOME/bin/kafka-console-producer.sh --broker-list $BROKER_LIST --topic testtopic --producer.config /home/<user>/client.properties
$cat client.properties
security.protocol=SASL_PLAINTEXT
sasl.mechanism=GSSAPI
#sasl.kerberos.service.name=kafka
sasl.jaas.config=com.sun.security.auth.module.Krb5LoginModule required \
useKeyTab=true \
storeKey=true \
keyTab="/home/<user>/<user>.keytab" \
useTicketCache=false \
serviceName="kafka" \
principal="user@domain.COM";

 

 Any idea why export KAFKA_OPTS is not working here?

Thank you

Re: Kafka client code does not currently support obtaining a password from the user

Rising Star

@sampathkumar_ma 

 

export KAFA_OPTS should work in this case. Could you please add "debug=true" to the jaas file:

 

KafkaClient {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/<user>/user.keytab"
storeKey=true
debug=true
useTicketCache=false
serviceName="kafka"
principal="user@domain.COM";
};

 

Share the complete output, we should see something similar to:

Debug is  true storeKey false useTicketCache true useKeyTab false doNotPrompt false ticketCache is null isInitiator true KeyTab is null refreshKrb5Config is false principal is null tryFirstPass is false useFirstPass is false storePass is false clearPass is false
Acquire TGT from Cache
Principal is kafka/host@EXAMPLE.COM
Commit Succeeded 

Also along with that you can enable DEBUG under: 

/etc/kafka/conf/tools-log4j.properties

 

Change WARN to DEBUG and run the client and share the details.

 

 

 

Re: Kafka client code does not currently support obtaining a password from the user

Expert Contributor

@ManuelCalvo 

Changed WARN to DEBUG and ran the kafka producer. Please find the details below:

jaas.conf

 

KafkaClient {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/user.keytab"
storeKey=true
useTicketCache=false
debug=true
serviceName="kafka"
principal="user@domain.COM";
};
Client {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=true
keyTab="/home/<user>/user.keytab"
storeKey=true
useTicketCache=false
debug=true
serviceName="zookeeper"
principal="user@domain.COM";
};

 

client.propertis

 

security.protocol=SASL_PLAINTEXT
sasl.kerberos.service.name=kafka

 

kafka-producer:

 

[<user>@server ~]$export KAFKA_OPTS="-Djava.security.auth.login.config=/home/<user>/jaas.conf -Djava.security.krb5.conf=/etc/krb5.conf -Dsun.security.krb5.debug=true"
[<user>@server ~]$ $KAFKA_HOME/bin/kafka-console-producer.sh --broker-list $BROKER_LIST --producer.config /home/<user>/client.properties --topic testtopic

 

full error log:

 

[<user>@server ~]$ $KAFKA_HOME/bin/kafka-console-producer.sh --broker-list $BROKER_LIST --producer.config /home/<user>/client.properties --topic testtopic
[2019-11-30 12:52:57,917] INFO Registered kafka:type=kafka.Log4jController MBean (kafka.utils.Log4jControllerRegistration$)
[2019-11-30 12:52:57,977] INFO ProducerConfig values:
        acks = 1
        batch.size = 16384
        bootstrap.servers = [server1:9092, server2:9092, server3:9092, server4:9092]
        buffer.memory = 33554432
        client.id = console-producer
        compression.type = none
        connections.max.idle.ms = 540000
        enable.idempotence = false
        interceptor.classes = []
        key.serializer = class org.apache.kafka.common.serialization.ByteArraySerializer
        linger.ms = 1000
        max.block.ms = 60000
        max.in.flight.requests.per.connection = 5
        max.request.size = 1048576
        metadata.max.age.ms = 300000
        metric.reporters = []
        metrics.num.samples = 2
        metrics.recording.level = INFO
        metrics.sample.window.ms = 30000
        partitioner.class = class org.apache.kafka.clients.producer.internals.DefaultPartitioner
        receive.buffer.bytes = 32768
        reconnect.backoff.max.ms = 1000
        reconnect.backoff.ms = 50
        request.timeout.ms = 1500
        retries = 3
        retry.backoff.ms = 100
        sasl.client.callback.handler.class = null
        sasl.jaas.config = null
        sasl.kerberos.kinit.cmd = /usr/bin/kinit
        sasl.kerberos.min.time.before.relogin = 60000
        sasl.kerberos.service.name = kafka
        sasl.kerberos.ticket.renew.jitter = 0.05
        sasl.kerberos.ticket.renew.window.factor = 0.8
        sasl.login.callback.handler.class = null
        sasl.login.class = null
        sasl.login.refresh.buffer.seconds = 300
        sasl.login.refresh.min.period.seconds = 60
        sasl.login.refresh.window.factor = 0.8
        sasl.login.refresh.window.jitter = 0.05
        sasl.mechanism = GSSAPI
        security.protocol = SASL_PLAINTEXT
        send.buffer.bytes = 102400
        ssl.cipher.suites = null
        ssl.enabled.protocols = [TLSv1.2, TLSv1.1, TLSv1]
        ssl.endpoint.identification.algorithm = https
        ssl.key.password = null
        ssl.keymanager.algorithm = SunX509
        ssl.keystore.location = null
        ssl.keystore.password = null
        ssl.keystore.type = JKS
        ssl.protocol = TLS
        ssl.provider = null
        ssl.secure.random.implementation = null
        ssl.trustmanager.algorithm = PKIX
        ssl.truststore.location = null
        ssl.truststore.password = null
        ssl.truststore.type = JKS
        transaction.timeout.ms = 60000
        transactional.id = null
        value.serializer = class org.apache.kafka.common.serialization.ByteArraySerializer
 (org.apache.kafka.clients.producer.ProducerConfig)
[2019-11-30 12:52:57,997] DEBUG Added sensor with name bufferpool-wait-time (org.apache.kafka.common.metrics.Metrics)
[2019-11-30 12:52:58,000] DEBUG Added sensor with name buffer-exhausted-records (org.apache.kafka.common.metrics.Metrics)
[2019-11-30 12:52:58,191] DEBUG Updated cluster metadata version 1 to Cluster(id = null, nodes = [server1:9092 (id: -2 rack: null), server2:9092 (id: -1 rack: null), server3:9092 (id: -4 rack: null), server4:9092 (id: -3 rack: null)], partitions = [], controller = null) (org.apache.kafka.clients.Metadata)
[2019-11-30 12:52:58,210] INFO [Producer clientId=console-producer] Closing the Kafka producer with timeoutMillis = 0 ms. (org.apache.kafka.clients.producer.KafkaProducer)
[2019-11-30 12:52:58,211] DEBUG [Producer clientId=console-producer] Kafka producer has been closed (org.apache.kafka.clients.producer.KafkaProducer)
org.apache.kafka.common.KafkaException: Failed to construct kafka producer
        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:457)
        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:304)
        at kafka.tools.ConsoleProducer$.main(ConsoleProducer.scala:45)
        at kafka.tools.ConsoleProducer.main(ConsoleProducer.scala)
Caused by: org.apache.kafka.common.KafkaException: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner  authentication information from the user
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:153)
        at org.apache.kafka.common.network.ChannelBuilders.create(ChannelBuilders.java:140)
        at org.apache.kafka.common.network.ChannelBuilders.clientChannelBuilder(ChannelBuilders.java:65)
        at org.apache.kafka.clients.ClientUtils.createChannelBuilder(ClientUtils.java:88)
        at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:414)
        ... 3 more
Caused by: javax.security.auth.login.LoginException: Could not login: the client is being asked for a password, but the Kafka client code does not currently support obtaining a password from the user. not available to garner  authentication information from the user
        at com.sun.security.auth.module.Krb5LoginModule.promptForPass(Krb5LoginModule.java:940)
        at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:760)
        at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
        at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
        at org.apache.kafka.common.security.authenticator.AbstractLogin.login(AbstractLogin.java:60)
        at org.apache.kafka.common.security.kerberos.KerberosLogin.login(KerberosLogin.java:103)
        at org.apache.kafka.common.security.authenticator.LoginManager.<init>(LoginManager.java:65)
        at org.apache.kafka.common.security.authenticator.LoginManager.acquireLoginManager(LoginManager.java:125)
        at org.apache.kafka.common.network.SaslChannelBuilder.configure(SaslChannelBuilder.java:142)
        ... 7 more
[<user>@server ~]$

 

 

Re: Kafka client code does not currently support obtaining a password from the user

New Contributor

I am facing the same issue. Did any of you get this working ?

 

Re: Kafka client code does not currently support obtaining a password from the user

Rising Star

From jaas file I see that the debug=true was added, on the other hand, the debug is not showing up in the producer output, which means that the jaas file provided is not picker up properly.

 

If you check the kafka-console-producer.sh you'll notice below lines:

 

# check if kafka_jaas.conf in config , only enable client_kerberos_params in secure mode.
KAFKA_HOME="$(dirname $(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd ))"
KAFKA_JAAS_CONF=$KAFKA_HOME/config/kafka_jaas.conf
if [ -f $KAFKA_JAAS_CONF ]; then
    export KAFKA_CLIENT_KERBEROS_PARAMS="-Djava.security.auth.login.config=$KAFKA_HOME/config/kafka_client_jaas.conf"
fi

Try editing kafka_client_jaas.conf  or also you can try to export using KAFKA_CLIENT_KERBEROS_PARAMS and see if that helps.

 

Regards,

Manuel.