Revert "Revert "Test and doc for PR12771 krb5 + cyrus-sasl + kerberized kafka""

This reverts commit c298c633a7.

.gitmodules

@@ -186,3 +186,4 @@
 [submodule "contrib/cyrus-sasl"]
 	path = contrib/cyrus-sasl
 	url = https://github.com/cyrusimap/cyrus-sasl
+	branch = cyrus-sasl-2.1

cmake/find/rdkafka.cmake

@@ -14,10 +14,10 @@ if (NOT ENABLE_RDKAFKA)
     return()
 endif()
 
-if (NOT ARCH_ARM AND USE_LIBGSASL)
+if (NOT ARCH_ARM)
     option (USE_INTERNAL_RDKAFKA_LIBRARY "Set to FALSE to use system librdkafka instead of the bundled" ${NOT_UNBUNDLED})
 elseif(USE_INTERNAL_RDKAFKA_LIBRARY)
-    message (${RECONFIGURE_MESSAGE_LEVEL} "Can't use internal librdkafka with ARCH_ARM=${ARCH_ARM} AND USE_LIBGSASL=${USE_LIBGSASL}")
+    message (${RECONFIGURE_MESSAGE_LEVEL} "Can't use internal librdkafka with ARCH_ARM=${ARCH_ARM}")
 endif ()
 
 if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/cppkafka/CMakeLists.txt")

contrib/cyrus-sasl

@@ -1 +1 @@
-Subproject commit 6054630889fd1cd8d0659573d69badcee1e23a00
+Subproject commit 9995bf9d8e14f58934d9313ac64f13780d6dd3c9

docker/images.json

@@ -133,6 +133,10 @@
         "name": "yandex/clickhouse-postgresql-java-client",
         "dependent": []
     },
+    "docker/test/integration/kerberos_kdc": {
+        "name": "yandex/clickhouse-kerberos-kdc",
+        "dependent": []
+    },
     "docker/test/base": {
          "name": "yandex/clickhouse-test-base",
          "dependent": [

docker/test/integration/base/Dockerfile

@@ -16,7 +16,8 @@ RUN apt-get update \
         odbc-postgresql \
         sqlite3 \
         curl \
-        tar
+        tar \
+        krb5-user
 RUN rm -rf \
         /var/lib/apt/lists/* \
         /var/cache/debconf \

docker/test/integration/kerberos_kdc/Dockerfile

@@ -0,0 +1,15 @@
+# docker build -t yandex/clickhouse-kerberos-kdc .
+
+FROM centos:6.6
+# old OS to make is faster and smaller
+
+RUN yum install -y krb5-server krb5-libs krb5-auth-dialog krb5-workstation
+
+EXPOSE 88 749
+
+RUN touch /config.sh
+# should be overwritten e.g. via docker_compose volumes
+#   volumes: /some_path/my_kerberos_config.sh:/config.sh:ro
+
+
+ENTRYPOINT ["/bin/bash", "/config.sh"]

docker/test/integration/runner/compose/docker_compose_kerberized_kafka.yml

@@ -0,0 +1,59 @@
+version: '2.3'
+
+services:
+  kafka_kerberized_zookeeper:
+    image: confluentinc/cp-zookeeper:5.2.0
+    # restart: always
+    hostname: kafka_kerberized_zookeeper
+    environment:
+        ZOOKEEPER_SERVER_ID: 1
+        ZOOKEEPER_CLIENT_PORT: 2181
+        ZOOKEEPER_SERVERS: "kafka_kerberized_zookeeper:2888:3888"
+        KAFKA_OPTS: "-Djava.security.auth.login.config=/etc/kafka/secrets/zookeeper_jaas.conf -Djava.security.krb5.conf=/etc/kafka/secrets/krb.conf -Dzookeeper.authProvider.1=org.apache.zookeeper.server.auth.SASLAuthenticationProvider -Dsun.security.krb5.debug=true"
+    volumes:
+        - ${KERBERIZED_KAFKA_DIR}/secrets:/etc/kafka/secrets
+        - /dev/urandom:/dev/random
+    depends_on:
+        - kafka_kerberos
+    security_opt:
+        - label:disable
+
+  kerberized_kafka1:
+    image: confluentinc/cp-kafka:5.2.0
+    # restart: always
+    hostname: kerberized_kafka1
+    ports:
+        - "9092:9092"
+        - "9093:9093"
+    environment:
+        KAFKA_LISTENERS: OUTSIDE://:19092,UNSECURED_OUTSIDE://:19093,UNSECURED_INSIDE://:9093
+        KAFKA_ADVERTISED_LISTENERS: OUTSIDE://kerberized_kafka1:19092,UNSECURED_OUTSIDE://kerberized_kafka1:19093,UNSECURED_INSIDE://localhost:9093
+        # KAFKA_LISTENERS: INSIDE://kerberized_kafka1:9092,OUTSIDE://kerberized_kafka1:19092
+        # KAFKA_ADVERTISED_LISTENERS: INSIDE://localhost:9092,OUTSIDE://kerberized_kafka1:19092
+        KAFKA_SASL_MECHANISM_INTER_BROKER_PROTOCOL: GSSAPI
+        KAFKA_SASL_ENABLED_MECHANISMS: GSSAPI
+        KAFKA_SASL_KERBEROS_SERVICE_NAME: kafka
+        KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: OUTSIDE:SASL_PLAINTEXT,UNSECURED_OUTSIDE:PLAINTEXT,UNSECURED_INSIDE:PLAINTEXT,
+        KAFKA_INTER_BROKER_LISTENER_NAME: OUTSIDE
+        KAFKA_BROKER_ID: 1
+        KAFKA_ZOOKEEPER_CONNECT: "kafka_kerberized_zookeeper:2181"
+        KAFKA_LOG4J_LOGGERS: "kafka.controller=INFO,kafka.producer.async.DefaultEventHandler=INFO,state.change.logger=INFO"
+        KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
+        KAFKA_OPTS: "-Djava.security.auth.login.config=/etc/kafka/secrets/broker_jaas.conf -Djava.security.krb5.conf=/etc/kafka/secrets/krb.conf -Dsun.security.krb5.debug=true"
+    volumes:
+        - ${KERBERIZED_KAFKA_DIR}/secrets:/etc/kafka/secrets
+        - /dev/urandom:/dev/random
+    depends_on:
+        - kafka_kerberized_zookeeper
+        - kafka_kerberos
+    security_opt:
+        - label:disable
+
+  kafka_kerberos:
+    image: yandex/clickhouse-kerberos-kdc:${DOCKER_KERBEROS_KDC_TAG}
+    hostname: kafka_kerberos
+    volumes:
+        - ${KERBERIZED_KAFKA_DIR}/secrets:/tmp/keytab
+        - ${KERBERIZED_KAFKA_DIR}/../../kerberos_image_config.sh:/config.sh
+        - /dev/urandom:/dev/random
+    ports: [88, 749]

docker/test/integration/runner/dockerd-entrypoint.sh

@@ -27,6 +27,7 @@ export DOCKER_MYSQL_JAVA_CLIENT_TAG=${DOCKER_MYSQL_JAVA_CLIENT_TAG:=latest}
 export DOCKER_MYSQL_JS_CLIENT_TAG=${DOCKER_MYSQL_JS_CLIENT_TAG:=latest}
 export DOCKER_MYSQL_PHP_CLIENT_TAG=${DOCKER_MYSQL_PHP_CLIENT_TAG:=latest}
 export DOCKER_POSTGRESQL_JAVA_CLIENT_TAG=${DOCKER_POSTGRESQL_JAVA_CLIENT_TAG:=latest}
+export DOCKER_KERBEROS_KDC_TAG=${DOCKER_KERBEROS_KDC_TAG:=latest}
 
 cd /ClickHouse/tests/integration
 exec "$@"

docs/en/engines/table-engines/integrations/kafka.md

@@ -165,6 +165,22 @@ Similar to GraphiteMergeTree, the Kafka engine supports extended configuration u
 
 For a list of possible configuration options, see the [librdkafka configuration reference](https://github.com/edenhill/librdkafka/blob/master/CONFIGURATION.md). Use the underscore (`_`) instead of a dot in the ClickHouse configuration. For example, `check.crcs=true` will be `<check_crcs>true</check_crcs>`.
 
+### Kerberos support {#kafka-kerberos-support}
+
+To deal with Kerberos-aware Kafka, add `security_protocol` child element with `sasl_plaintext` value. It is enough if Kerberos ticket-granting ticket is obtained and cached by OS facilities.
+ClickHouse is able to maintain Kerberos credentials using a keytab file. Consider `sasl_kerberos_service_name`, `sasl_kerberos_keytab`, `sasl_kerberos_principal` and `sasl.kerberos.kinit.cmd` child elements.
+
+Example:
+
+``` xml
+  <!-- Kerberos-aware Kafka -->
+  <kafka>
+    <security_protocol>SASL_PLAINTEXT</security_protocol>
+	<sasl_kerberos_keytab>/home/kafkauser/kafkauser.keytab</sasl_kerberos_keytab>
+	<sasl_kerberos_principal>kafkauser/kafkahost@EXAMPLE.COM</sasl_kerberos_principal>
+  </kafka>
+```
+
 ## Virtual Columns {#virtual-columns}
 
 -   `_topic` — Kafka topic.

tests/integration/helpers/cluster.py

@@ -45,7 +45,6 @@ def _create_env_file(path, variables, fname=DEFAULT_ENV_NAME):
             f.write("=".join([var, value]) + "\n")
     return full_path
 
-
 def subprocess_check_call(args):
     # Uncomment for debugging
     # print('run:', ' ' . join(args))
@@ -125,6 +124,7 @@ class ClickHouseCluster:
         self.base_zookeeper_cmd = None
         self.base_mysql_cmd = []
         self.base_kafka_cmd = []
+        self.base_kerberized_kafka_cmd = []
         self.base_rabbitmq_cmd = []
         self.base_cassandra_cmd = []
         self.pre_zookeeper_commands = []
@@ -133,6 +133,7 @@ class ClickHouseCluster:
         self.with_mysql = False
         self.with_postgres = False
         self.with_kafka = False
+        self.with_kerberized_kafka = False
         self.with_rabbitmq = False
         self.with_odbc_drivers = False
         self.with_hdfs = False
@@ -169,7 +170,7 @@ class ClickHouseCluster:
 
     def add_instance(self, name, base_config_dir=None, main_configs=None, user_configs=None, dictionaries=None,
                      macros=None,
-                     with_zookeeper=False, with_mysql=False, with_kafka=False, with_rabbitmq=False,
+                     with_zookeeper=False, with_mysql=False, with_kafka=False, with_kerberized_kafka=False, with_rabbitmq=False,
                      clickhouse_path_dir=None,
                      with_odbc_drivers=False, with_postgres=False, with_hdfs=False, with_mongo=False,
                      with_redis=False, with_minio=False, with_cassandra=False,
@@ -207,6 +208,7 @@ class ClickHouseCluster:
             zookeeper_config_path=self.zookeeper_config_path,
             with_mysql=with_mysql,
             with_kafka=with_kafka,
+            with_kerberized_kafka=with_kerberized_kafka,
             with_rabbitmq=with_rabbitmq,
             with_mongo=with_mongo,
             with_redis=with_redis,
@@ -290,6 +292,13 @@ class ClickHouseCluster:
                                    p.join(docker_compose_yml_dir, 'docker_compose_kafka.yml')]
             cmds.append(self.base_kafka_cmd)
 
+        if with_kerberized_kafka and not self.with_kerberized_kafka:
+            self.with_kerberized_kafka = True
+            self.base_cmd.extend(['--file', p.join(docker_compose_yml_dir, 'docker_compose_kerberized_kafka.yml')])
+            self.base_kerberized_kafka_cmd = ['docker-compose', '--project-directory', self.base_dir, '--project-name',
+                                   self.project_name, '--file', p.join(docker_compose_yml_dir, 'docker_compose_kerberized_kafka.yml')]
+            cmds.append(self.base_kerberized_kafka_cmd)
+
         if with_rabbitmq and not self.with_rabbitmq:
             self.with_rabbitmq = True
             self.base_cmd.extend(['--file', p.join(docker_compose_yml_dir, 'docker_compose_rabbitmq.yml')])
@@ -608,6 +617,11 @@ class ClickHouseCluster:
                 self.kafka_docker_id = self.get_instance_docker_id('kafka1')
                 self.wait_schema_registry_to_start(120)
 
+            if self.with_kerberized_kafka and self.base_kerberized_kafka_cmd:
+                env = os.environ.copy()
+                env['KERBERIZED_KAFKA_DIR'] = instance.path + '/'
+                subprocess.check_call(self.base_kerberized_kafka_cmd + common_opts + ['--renew-anon-volumes'], env=env)
+                self.kerberized_kafka_docker_id = self.get_instance_docker_id('kerberized_kafka1')
             if self.with_rabbitmq and self.base_rabbitmq_cmd:
                 subprocess_check_call(self.base_rabbitmq_cmd + common_opts + ['--renew-anon-volumes'])
                 self.rabbitmq_docker_id = self.get_instance_docker_id('rabbitmq1')
@@ -788,9 +802,12 @@ services:
             - {instance_config_dir}:/etc/clickhouse-server/
             - {db_dir}:/var/lib/clickhouse/
             - {logs_dir}:/var/log/clickhouse-server/
+            - /etc/passwd:/etc/passwd:ro
             {binary_volume}
             {odbc_bridge_volume}
             {odbc_ini_path}
+            {keytab_path}
+            {krb5_conf}
         entrypoint: {entrypoint_cmd}
         tmpfs: {tmpfs}
         cap_add:
@@ -820,7 +837,7 @@ class ClickHouseInstance:
     def __init__(
             self, cluster, base_path, name, base_config_dir, custom_main_configs, custom_user_configs,
             custom_dictionaries,
-            macros, with_zookeeper, zookeeper_config_path, with_mysql, with_kafka, with_rabbitmq, with_mongo,
+            macros, with_zookeeper, zookeeper_config_path, with_mysql, with_kafka, with_kerberized_kafka, with_rabbitmq, with_mongo,
             with_redis, with_minio,
             with_cassandra, server_bin_path, odbc_bridge_bin_path, clickhouse_path_dir, with_odbc_drivers,
             hostname=None, env_variables=None,
@@ -839,6 +856,7 @@ class ClickHouseInstance:
         self.custom_user_config_paths = [p.abspath(p.join(base_path, c)) for c in custom_user_configs]
         self.custom_dictionaries_paths = [p.abspath(p.join(base_path, c)) for c in custom_dictionaries]
         self.clickhouse_path_dir = p.abspath(p.join(base_path, clickhouse_path_dir)) if clickhouse_path_dir else None
+        self.kerberos_secrets_dir = p.abspath(p.join(base_path, 'secrets'))
         self.macros = macros if macros is not None else {}
         self.with_zookeeper = with_zookeeper
         self.zookeeper_config_path = zookeeper_config_path
@@ -848,6 +866,7 @@ class ClickHouseInstance:
 
         self.with_mysql = with_mysql
         self.with_kafka = with_kafka
+        self.with_kerberized_kafka = with_kerberized_kafka
         self.with_rabbitmq = with_rabbitmq
         self.with_mongo = with_mongo
         self.with_redis = with_redis
@@ -863,6 +882,13 @@ class ClickHouseInstance:
         else:
             self.odbc_ini_path = ""
 
+        if with_kerberized_kafka:
+            self.keytab_path = '- ' + os.path.dirname(self.docker_compose_path) + "/secrets:/tmp/keytab"
+            self.krb5_conf = '- ' + os.path.dirname(self.docker_compose_path) + "/secrets/krb.conf:/etc/krb5.conf:ro"
+        else:
+            self.keytab_path = ""
+            self.krb5_conf = ""
+
         self.docker_client = None
         self.ip_address = None
         self.client = None
@@ -1192,6 +1218,9 @@ class ClickHouseInstance:
         if self.with_zookeeper:
             shutil.copy(self.zookeeper_config_path, conf_d_dir)
 
+        if self.with_kerberized_kafka:
+            shutil.copytree(self.kerberos_secrets_dir, p.abspath(p.join(self.path, 'secrets')))
+
         # Copy config.d configs
         print "Copy custom test config files {} to {}".format(self.custom_main_config_paths, self.config_d_dir)
         for path in self.custom_main_config_paths:
@@ -1227,6 +1256,9 @@ class ClickHouseInstance:
             depends_on.append("kafka1")
             depends_on.append("schema-registry")
 
+        if self.with_kerberized_kafka:
+            depends_on.append("kerberized_kafka1")
+
         if self.with_rabbitmq:
             depends_on.append("rabbitmq1")
 
@@ -1290,6 +1322,8 @@ class ClickHouseInstance:
                 user=os.getuid(),
                 env_file=env_file,
                 odbc_ini_path=odbc_ini_path,
+                keytab_path=self.keytab_path,
+                krb5_conf=self.krb5_conf,
                 entrypoint_cmd=entrypoint_cmd,
                 networks=networks,
                 app_net=app_net,

tests/integration/runner

@@ -156,6 +156,8 @@ if __name__ == "__main__":
                 env_tags += "-e {}={} ".format("DOCKER_POSTGRESQL_JAVA_CLIENT_TAG", tag)
             elif image == "yandex/clickhouse-integration-test":
                 env_tags += "-e {}={}".format("DOCKER_BASE_TAG", tag)
+            elif image == "yandex/clickhouse-kerberos-kdc":
+                env_tags += "-e {}={}".format("DOCKER_KERBEROS_KDC_TAG", tag)
             else:
                 logging.info("Unknown image {}".format(image))
 

tests/integration/test_storage_kerberized_kafka/configs/kafka.xml

@@ -0,0 +1,26 @@
+<yandex>
+    <kafka>
+        <auto_offset_reset>earliest</auto_offset_reset>
+        <!-- Debugging of possible issues, like:
+             - https://github.com/edenhill/librdkafka/issues/2077
+             - https://github.com/edenhill/librdkafka/issues/1778
+             - #5615
+
+             XXX: for now this messages will appears in stderr.
+        -->
+				<security_protocol>SASL_PLAINTEXT</security_protocol>
+				<sasl_mechanism>GSSAPI</sasl_mechanism>
+				<sasl_kerberos_service_name>kafka</sasl_kerberos_service_name>
+				<sasl_kerberos_keytab>/tmp/keytab/clickhouse.keytab</sasl_kerberos_keytab>
+				<sasl_kerberos_principal>kafkauser/instance@TEST.CLICKHOUSE.TECH</sasl_kerberos_principal>
+				<debug>security</debug>
+				<api_version_request>false</api_version_request>
+    </kafka>
+
+    <kafka_consumer_hang>
+        <!-- default: 3000 -->
+        <heartbeat_interval_ms>300</heartbeat_interval_ms>
+        <!-- default: 10000 -->
+        <session_timeout_ms>6000</session_timeout_ms>
+    </kafka_consumer_hang>
+</yandex>

tests/integration/test_storage_kerberized_kafka/configs/log_conf.xml

@@ -0,0 +1,11 @@
+<yandex>
+    <logger>
+        <level>trace</level>
+        <log>/var/log/clickhouse-server/log.log</log>
+        <errorlog>/var/log/clickhouse-server/log.err.log</errorlog>
+        <size>1000M</size>
+        <count>10</count>
+        <stderr>/var/log/clickhouse-server/stderr.log</stderr>
+        <stdout>/var/log/clickhouse-server/stdout.log</stdout>
+    </logger>
+</yandex>

tests/integration/test_storage_kerberized_kafka/kerberos_image_config.sh

@@ -0,0 +1,132 @@
+#!/bin/bash
+
+
+set -x # trace
+
+: "${REALM:=TEST.CLICKHOUSE.TECH}"
+: "${DOMAIN_REALM:=test.clickhouse.tech}"
+: "${KERB_MASTER_KEY:=masterkey}"
+: "${KERB_ADMIN_USER:=admin}"
+: "${KERB_ADMIN_PASS:=admin}"
+
+create_config() {
+  : "${KDC_ADDRESS:=$(hostname -f)}"
+
+  cat>/etc/krb5.conf<<EOF
+[logging]
+ default = FILE:/var/log/kerberos/krb5libs.log
+ kdc = FILE:/var/log/kerberos/krb5kdc.log
+ admin_server = FILE:/var/log/kerberos/kadmind.log
+
+[libdefaults]
+ default_realm = $REALM
+ dns_lookup_realm = false
+ dns_lookup_kdc = false
+ ticket_lifetime = 15s
+ renew_lifetime = 15s
+ forwardable = true
+ # WARNING: We use weaker key types to simplify testing as stronger key types
+ # require the enhanced security JCE policy file to be installed. You should
+ # NOT run with this configuration in production or any real environment. You
+ # have been warned.
+ default_tkt_enctypes = des-cbc-md5 des-cbc-crc des3-cbc-sha1
+ default_tgs_enctypes = des-cbc-md5 des-cbc-crc des3-cbc-sha1
+ permitted_enctypes = des-cbc-md5 des-cbc-crc des3-cbc-sha1
+
+[realms]
+ $REALM = {
+  kdc = $KDC_ADDRESS
+  admin_server = $KDC_ADDRESS
+ }
+
+[domain_realm]
+ .$DOMAIN_REALM = $REALM
+ $DOMAIN_REALM = $REALM
+EOF
+
+cat>/var/kerberos/krb5kdc/kdc.conf<<EOF
+[kdcdefaults]
+ kdc_ports = 88
+ kdc_tcp_ports = 88
+
+[realms]
+ $REALM = {
+  acl_file = /var/kerberos/krb5kdc/kadm5.acl
+  dict_file = /usr/share/dict/words
+  admin_keytab = /var/kerberos/krb5kdc/kadm5.keytab
+  # WARNING: We use weaker key types to simplify testing as stronger key types
+  # require the enhanced security JCE policy file to be installed. You should
+  # NOT run with this configuration in production or any real environment. You
+  # have been warned.
+  master_key_type = des3-hmac-sha1
+  supported_enctypes = arcfour-hmac:normal des3-hmac-sha1:normal des-cbc-crc:normal des:normal des:v4 des:norealm des:onlyrealm des:afs3
+  default_principal_flags = +preauth
+ }
+EOF
+}
+
+create_db() {
+  /usr/sbin/kdb5_util -P $KERB_MASTER_KEY -r $REALM create -s
+}
+
+start_kdc() {
+  mkdir -p /var/log/kerberos
+
+  /etc/rc.d/init.d/krb5kdc start
+  /etc/rc.d/init.d/kadmin start
+
+  chkconfig krb5kdc on
+  chkconfig kadmin on
+}
+
+restart_kdc() {
+  /etc/rc.d/init.d/krb5kdc restart
+  /etc/rc.d/init.d/kadmin restart
+}
+
+create_admin_user() {
+  kadmin.local -q "addprinc -pw $KERB_ADMIN_PASS $KERB_ADMIN_USER/admin"
+  echo "*/admin@$REALM *" > /var/kerberos/krb5kdc/kadm5.acl
+}
+
+create_keytabs() {
+
+  kadmin.local -q "addprinc -randkey zookeeper/kafka_kerberized_zookeeper@${REALM}"
+  kadmin.local -q "ktadd -norandkey -k /tmp/keytab/kafka_kerberized_zookeeper.keytab zookeeper/kafka_kerberized_zookeeper@${REALM}"
+
+  kadmin.local -q "addprinc -randkey kafka/kerberized_kafka1@${REALM}"
+  kadmin.local -q "ktadd -norandkey -k /tmp/keytab/kerberized_kafka.keytab kafka/kerberized_kafka1@${REALM}"
+
+  kadmin.local -q "addprinc -randkey zkclient@${REALM}"
+  kadmin.local -q "ktadd -norandkey -k /tmp/keytab/zkclient.keytab zkclient@${REALM}"
+
+
+  kadmin.local -q "addprinc -randkey kafkauser/instance@${REALM}"
+  kadmin.local -q "ktadd -norandkey -k /tmp/keytab/clickhouse.keytab kafkauser/instance@${REALM}"
+
+  chmod g+r /tmp/keytab/clickhouse.keytab
+
+}
+
+main() {
+
+  if [ ! -f /kerberos_initialized ]; then
+    create_config
+    create_db
+    create_admin_user
+    start_kdc
+
+    touch /kerberos_initialized
+  fi
+
+  if [ ! -f /var/kerberos/krb5kdc/principal ]; then
+    while true; do sleep 1000; done
+  else
+    start_kdc
+		create_keytabs
+    tail -F /var/log/kerberos/krb5kdc.log
+  fi
+
+}
+
+[[ "$0" == "${BASH_SOURCE[0]}" ]] && main "$@"

tests/integration/test_storage_kerberized_kafka/secrets/broker_jaas.conf

@@ -0,0 +1,14 @@
+KafkaServer {
+    com.sun.security.auth.module.Krb5LoginModule required
+    useKeyTab=true
+    storeKey=true
+    keyTab="/etc/kafka/secrets/kerberized_kafka.keytab"
+    principal="kafka/kerberized_kafka1@TEST.CLICKHOUSE.TECH";
+};
+Client {
+    com.sun.security.auth.module.Krb5LoginModule required
+    useKeyTab=true
+    storeKey=true
+    keyTab="/etc/kafka/secrets/zkclient.keytab"
+    principal="zkclient@TEST.CLICKHOUSE.TECH";
+};

tests/integration/test_storage_kerberized_kafka/secrets/krb.conf

@@ -0,0 +1,22 @@
+[logging]
+ default = FILE:/var/log/kerberos/krb5libs.log
+ kdc = FILE:/var/log/kerberos/krb5kdc.log
+ admin_server = FILE:/var/log/kerberos/kadmind.log
+
+[libdefaults]
+ default_realm = TEST.CLICKHOUSE.TECH
+ dns_lookup_realm = false
+ dns_lookup_kdc = false
+ ticket_lifetime = 15s
+ renew_lifetime = 15s
+ forwardable = true
+
+[realms]
+ TEST.CLICKHOUSE.TECH = {
+  kdc = kafka_kerberos
+  admin_server = kafka_kerberos
+ }
+
+[domain_realm]
+ .TEST.CLICKHOUSE.TECH = TEST.CLICKHOUSE.TECH
+ TEST.CLICKHOUSE.TECH = TEST.CLICKHOUSE.TECH

tests/integration/test_storage_kerberized_kafka/secrets/zookeeper_jaas.conf

@@ -0,0 +1,14 @@
+Server {
+    com.sun.security.auth.module.Krb5LoginModule required
+    useKeyTab=true
+    storeKey=true
+    keyTab="/etc/kafka/secrets/kafka_kerberized_zookeeper.keytab"
+    principal="zookeeper/kafka_kerberized_zookeeper@TEST.CLICKHOUSE.TECH";
+};
+Client {
+    com.sun.security.auth.module.Krb5LoginModule required
+    useKeyTab=true
+    storeKey=true
+    keyTab="/etc/kafka/secrets/zkclient.keytab"
+    principal="zkclient@TEST.CLICKHOUSE.TECH";
+};

tests/integration/test_storage_kerberized_kafka/test.py

@@ -0,0 +1,146 @@
+import os.path as p
+import random
+import threading
+import time
+import pytest
+
+from helpers.cluster import ClickHouseCluster
+from helpers.test_tools import TSV
+from helpers.client import QueryRuntimeException
+from helpers.network import PartitionManager
+
+import json
+import subprocess
+import kafka.errors
+from kafka import KafkaAdminClient, KafkaProducer, KafkaConsumer, BrokerConnection
+from kafka.admin import NewTopic
+from kafka.protocol.admin import DescribeGroupsResponse_v1, DescribeGroupsRequest_v1
+from kafka.protocol.group import MemberAssignment
+import socket
+
+cluster = ClickHouseCluster(__file__)
+instance = cluster.add_instance('instance',
+                                main_configs=['configs/kafka.xml', 'configs/log_conf.xml' ],
+                                with_kerberized_kafka=True,
+                                clickhouse_path_dir="clickhouse_path"
+                                )
+kafka_id = ''    # instance.cluster.kafka_docker_id
+
+# Helpers
+
+def check_kafka_is_available():
+
+    # plaintext
+    p = subprocess.Popen(('docker',
+                          'exec',
+                          '-i',
+                          kafka_id,
+                          '/usr/bin/kafka-broker-api-versions',
+                          '--bootstrap-server',
+                          'localhost:9093'),
+                         stdout=subprocess.PIPE)
+    p.communicate()
+    return p.returncode == 0
+
+
+def wait_kafka_is_available(max_retries=50):
+    retries = 0
+    while True:
+        if check_kafka_is_available():
+            break
+        else:
+            retries += 1
+            if retries > max_retries:
+                raise "Kafka is not available"
+            print("Waiting for Kafka to start up")
+            time.sleep(1)
+
+
+def kafka_produce(topic, messages, timestamp=None):
+    producer = KafkaProducer(bootstrap_servers="localhost:9093")
+    for message in messages:
+        producer.send(topic=topic, value=message, timestamp_ms=timestamp)
+        producer.flush()
+    print ("Produced {} messages for topic {}".format(len(messages), topic))
+
+
+
+# Fixtures
+
+@pytest.fixture(scope="module")
+def kafka_cluster():
+    try:
+        global kafka_id
+        cluster.start()
+        kafka_id = instance.cluster.kerberized_kafka_docker_id
+        print("kafka_id is {}".format(kafka_id))
+        yield cluster
+
+    finally:
+        cluster.shutdown()
+
+
+@pytest.fixture(autouse=True)
+def kafka_setup_teardown():
+    instance.query('DROP DATABASE IF EXISTS test; CREATE DATABASE test;')
+    wait_kafka_is_available()
+    print("kafka is available - running test")
+    yield  # run test
+
+# Tests
+
+@pytest.mark.timeout(180)  # wait to build containers
+def test_kafka_json_as_string(kafka_cluster):
+    kafka_produce('kafka_json_as_string', ['{"t": 123, "e": {"x": "woof"} }', '', '{"t": 124, "e": {"x": "test"} }', '{"F1":"V1","F2":{"F21":"V21","F22":{},"F23":"V23","F24":"2019-12-24T16:28:04"},"F3":"V3"}'])
+
+    instance.query('''
+        CREATE TABLE test.kafka (field String)
+            ENGINE = Kafka
+            SETTINGS kafka_broker_list = 'kerberized_kafka1:19092',
+                     kafka_topic_list = 'kafka_json_as_string',
+                     kafka_group_name = 'kafka_json_as_string',
+                     kafka_format = 'JSONAsString',
+                     kafka_flush_interval_ms=1000;
+        ''')
+
+    result = instance.query('SELECT * FROM test.kafka;')
+    expected = '''\
+{"t": 123, "e": {"x": "woof"} }
+{"t": 124, "e": {"x": "test"} }
+{"F1":"V1","F2":{"F21":"V21","F22":{},"F23":"V23","F24":"2019-12-24T16:28:04"},"F3":"V3"}
+'''
+    assert TSV(result) == TSV(expected)
+    assert instance.contains_in_log("Parsing of message (topic: kafka_json_as_string, partition: 0, offset: 1) return no rows")
+
+def test_kafka_json_as_string_no_kdc(kafka_cluster):
+    kafka_produce('kafka_json_as_string_no_kdc', ['{"t": 123, "e": {"x": "woof"} }', '', '{"t": 124, "e": {"x": "test"} }', '{"F1":"V1","F2":{"F21":"V21","F22":{},"F23":"V23","F24":"2019-12-24T16:28:04"},"F3":"V3"}'])
+
+    kafka_cluster.pause_container('kafka_kerberos')
+    time.sleep(45)   # wait for ticket expiration
+
+    instance.query('''
+        CREATE TABLE test.kafka_no_kdc (field String)
+            ENGINE = Kafka
+            SETTINGS kafka_broker_list = 'kerberized_kafka1:19092',
+                     kafka_topic_list = 'kafka_json_as_string_no_kdc',
+                     kafka_group_name = 'kafka_json_as_string_no_kdc',
+                     kafka_format = 'JSONAsString',
+                     kafka_flush_interval_ms=1000;
+        ''')
+
+    result = instance.query('SELECT * FROM test.kafka_no_kdc;')
+    expected = ''
+
+    kafka_cluster.unpause_container('kafka_kerberos')
+
+
+    assert TSV(result) == TSV(expected)
+    assert instance.contains_in_log("StorageKafka (kafka_no_kdc): Nothing to commit")
+    assert instance.contains_in_log("Ticket expired")
+    assert instance.contains_in_log("Kerberos ticket refresh failed")
+
+
+if __name__ == '__main__':
+    cluster.start()
+    raw_input("Cluster created, press any key to destroy...")
+    cluster.shutdown()