Updated Kafka role for 0.10.x

roles/kafka/defaults/main.yml

@@ -1,7 +1,7 @@
 ---
 
 kafka_scala_version: 2.11
-kafka_version: 0.9.0.1
+kafka_version: 0.10.2.1
 
 kafka_install_dir: /opt/kafka
 kafka_config_dir: /opt/kafka/default/config
@@ -19,15 +19,14 @@ kafka_group: kafka
 kafka_port: 9092
 kafka_jmx_port: 9999
 kafka_message_max: 10000000
-kafka_replica_fetch_max_bytes: 15000000
 kafka_consumer_message_max: 16777216
-kafka_num_partitions: "{{ groups['kafka-nodes'] | length }}"
-kafka_replication_factor: "{{ groups['kafka-nodes'] | length }}"
+kafka_num_partitions: 3
+kafka_replication_factor: 3
 kafka_log_retention_hours: 168
-kafka_offsets_topic_num_partitions: 50
-kafka_offsets_topic_replication_factor: 3
-kafka_offsets_topic_segmant_bytes: 104857600
+kafka_num_network_threads: 8
 kafka_num_io_threads: 8
+kafka_num_replica_fetchers: 6
+kafka_zookeeper_connection_timeout: 6000
 kafka_heap: 1G
 
 repository_infrastructure: "{{ apache_mirror }}/kafka/{{ kafka_version }}"

roles/kafka/handlers/main.yml

@@ -1,6 +1,3 @@
 ---
 - name: restart kafka
   command: supervisorctl update kafka
-  # supervisorctl:
-  #   name=kafka
-  #   state=restarted

roles/kafka/tasks/main.yml

@@ -83,8 +83,6 @@
     src=consumer.properties.j2
     dest={{ kafka_config_dir }}/consumer.properties
     mode=0644
-  notify:
-    - restart kafka
   tags: kafka
 
 - name: copy supervisord config
@@ -114,5 +112,3 @@
     - "{{ kafka_data_dir }}"
     - "{{ kafka_log_dir }}"
   tags: kafka
-
-# - cron: name="clear old kafka app logs" job="find /opt/kafka/default/logs -mtime +7 -exec rm {} \; > /dev/null" minute="0"

roles/kafka/templates/consumer.properties.j2

@@ -28,5 +28,5 @@ group.id=test-consumer-group
 #consumer timeout
 #consumer.timeout.ms=5000
 
-# Need to increase this to play nice with message.max.bytes = 10000000
+# Need to increase this to play nice with broker message.max.bytes
 fetch.message.max.bytes={{ kafka_consumer_message_max }}

roles/kafka/templates/log4j.properties.j2

@@ -13,54 +13,66 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-log4j.rootLogger=INFO, stdout 
+log4j.rootLogger=INFO, stdout
 
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 log4j.appender.stdout.layout.ConversionPattern=[%d] %p %m (%c)%n
 
-log4j.appender.kafkaAppender=org.apache.log4j.RollingFileAppender
+log4j.appender.kafkaAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH
 log4j.appender.kafkaAppender.File={{ kafka_log_dir }}/server.log
 log4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout
 log4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
 log4j.appender.kafkaAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
 log4j.appender.kafkaAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
 
-log4j.appender.stateChangeAppender=org.apache.log4j.RollingFileAppender
+log4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH
 log4j.appender.stateChangeAppender.File={{ kafka_log_dir }}/state-change.log
 log4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout
 log4j.appender.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
 log4j.appender.stateChangeAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
 log4j.appender.stateChangeAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
 
-log4j.appender.requestAppender=org.apache.log4j.RollingFileAppender
+log4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.requestAppender.DatePattern='.'yyyy-MM-dd-HH
 log4j.appender.requestAppender.File={{ kafka_log_dir }}/kafka-request.log
 log4j.appender.requestAppender.layout=org.apache.log4j.PatternLayout
 log4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
 log4j.appender.requestAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
 log4j.appender.requestAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
 
-log4j.appender.cleanerAppender=org.apache.log4j.RollingFileAppender
+log4j.appender.cleanerAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH
 log4j.appender.cleanerAppender.File={{ kafka_log_dir }}/log-cleaner.log
 log4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout
 log4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
 log4j.appender.cleanerAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
 log4j.appender.cleanerAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
 
-log4j.appender.controllerAppender=org.apache.log4j.RollingFileAppender
+log4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH
 log4j.appender.controllerAppender.File={{ kafka_log_dir }}/controller.log
 log4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout
 log4j.appender.controllerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
 log4j.appender.controllerAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
-log4j.appender.controllerAppender.MaxFileSize=20MB
+log4j.appender.controllerAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
+
+log4j.appender.authorizerAppender=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.authorizerAppender.DatePattern='.'yyyy-MM-dd-HH
+log4j.appender.authorizerAppender.File={{ kafka_log_dir }}/kafka-authorizer.log
+log4j.appender.authorizerAppender.layout=org.apache.log4j.PatternLayout
+log4j.appender.authorizerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+log4j.appender.authorizerAppender.MaxBackupIndex={{ kafka_log_rolling_retention_count|default(5) }}
+log4j.appender.authorizerAppender.MaxFileSize={{ kafka_log_rolling_max_size|default('10MB') }}
 
 # Turn on all our debugging info
 #log4j.logger.kafka.producer.async.DefaultEventHandler=DEBUG, kafkaAppender
 #log4j.logger.kafka.client.ClientUtils=DEBUG, kafkaAppender
 #log4j.logger.kafka.perf=DEBUG, kafkaAppender
 #log4j.logger.kafka.perf.ProducerPerformance$ProducerThread=DEBUG, kafkaAppender
 #log4j.logger.org.I0Itec.zkclient.ZkClient=DEBUG
-
 log4j.logger.kafka=INFO, kafkaAppender
 
 log4j.logger.kafka.network.RequestChannel$=WARN, requestAppender
@@ -80,3 +92,7 @@ log4j.additivity.kafka.log.LogCleaner=false
 
 log4j.logger.state.change.logger=TRACE, stateChangeAppender
 log4j.additivity.state.change.logger=false
+
+#Change this to debug to get the actual audit log for authorizer.
+log4j.logger.kafka.authorizer.logger=WARN, authorizerAppender
+log4j.additivity.kafka.authorizer.logger=false

roles/kafka/templates/server.properties.j2

@@ -12,6 +12,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 # see kafka.server.KafkaConfig for additional details and defaults
 
 ############################# Server Basics #############################
@@ -21,47 +22,61 @@
 {%- if host == inventory_hostname -%}broker.id={{ loop.index }}{%- endif -%}
 {% endfor %}
 
-# The maximum message size the broker can receive (10mb as of 8/28/14)
-message.max.bytes={{ kafka_message_max }}
-replica.fetch.max.bytes={{ kafka_replica_fetch_max_bytes }}
-
-# Can delete topics in Kafka 0.8.2.0
+{% if kafka_inter_broker_protocol_version is defined and kafka_inter_broker_protocol_version %}
+# Specify which version of the inter-broker protocol will be used. This is 
+# typically bumped after all brokers were upgraded to a new version. Example 
+# of some valid values are: 0.8.0, 0.8.1, 0.8.1.1, 0.8.2, 0.8.2.0, 0.8.2.1, 
+# 0.9.0.0, 0.9.0.1, 0.10.1. Check ApiVersion for the full list.
+inter.broker.protocol.version={{ kafka_inter_broker_protocol_version }}
+{% endif %}
+
+{% if kafka_log_message_format_version is defined and kafka_log_message_format_version %}
+# Specify the message format version the broker will use to append messages to the 
+# logs. The value should be a valid ApiVersion. Some examples are: 0.8.2, 0.9.0.0, 
+# 0.10.0, 0.10.1, check ApiVersion for more details. By setting a particular message format 
+# version, the user is certifying that all the existing messages on disk are smaller 
+# or equal than the specified version. Setting this value incorrectly will cause 
+# consumers with older versions to break as they will receive messages with a format 
+# that they don't understand.
+log.message.format.version={{ kafka_log_message_format_version }}
+{% endif %}
+
+# The maximum message size the broker can receive
+message.max.bytes={{ kafka_message_max|default(1000012) }}
+
+# Switch to enable topic deletion or not, default value is false
 delete.topic.enable=true
 
 ############################# Socket Server Settings #############################
 
-# The port the socket server listens on
-port={{ kafka_port }}
-
-# Hostname the broker will bind to. If not set, the server will bind to all interfaces
-# host.name={{ inventory_hostname }}
+# The address the socket server listens on. It will get the value returned from
+# java.net.InetAddress.getCanonicalHostName() if not configured.
+#   FORMAT:
+#     listeners = security_protocol://host_name:port
+#   EXAMPLE:
+#     listeners = PLAINTEXT://your.host.name:9092
+#listeners=PLAINTEXT://{{ inventory_hostname }}:{{ kafka_port|default(9092) }}
 
-# Hostname the broker will advertise to producers and consumers. If not set, it uses the
-# value for "host.name" if configured.  Otherwise, it will use the value returned from
-# java.net.InetAddress.getCanonicalHostName().
-advertised.host.name={{ inventory_hostname }}
-
-# The port to publish to ZooKeeper for clients to use. If this is not set,
-# it will publish the same port that the broker binds to.
-advertised.port={{ kafka_port }}
+# Hostname and port the broker will advertise to producers and consumers. If not set,
+# it uses the value for "listeners" if configured.  Otherwise, it will use the value
+# returned from java.net.InetAddress.getCanonicalHostName().
+advertised.listeners=PLAINTEXT://{{ inventory_hostname }}:{{ kafka_port|default(9092) }}
 
 # The number of threads handling network requests
-# Apache Docs recommend setting to this 8 in production
-num.network.threads=8
+num.network.threads={{ kafka_num_network_threads|default(3) }}
 
 # The number of threads doing disk I/O
-num.io.threads={{ kafka_num_io_threads }}
+num.io.threads={{ kafka_num_io_threads|default(8) }}
 
 # The send buffer (SO_SNDBUF) used by the socket server
-socket.send.buffer.bytes=1048576
+socket.send.buffer.bytes=102400
 
 # The receive buffer (SO_RCVBUF) used by the socket server
-socket.receive.buffer.bytes=1048576
+socket.receive.buffer.bytes=102400
 
 # The maximum size of a request that the socket server will accept (protection against OOM)
 socket.request.max.bytes=104857600
 
-
 ############################# Log Basics #############################
 
 # A comma seperated list of directories under which to store log files
@@ -70,13 +85,18 @@ log.dirs={% for dir in kafka_data_log_dir %}{{dir}},{% endfor %}
 # The default number of log partitions per topic. More partitions allow greater
 # parallelism for consumption, but this will also result in more files across
 # the brokers.
-num.partitions={{ kafka_num_partitions }}
+num.partitions={{ kafka_num_partitions|default(1) }}
 
-# Add redundancy across brokers
-default.replication.factor={{ kafka_replication_factor }}
+# Default replication factors for automatically created topics
+default.replication.factor={{ kafka_replication_factor|default(1) }}
 
-# Increase IO between replication brokers
-num.replica.fetchers=4
+# The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
+# This value is recommended to be increased for installations with data dirs located in RAID array.
+num.recovery.threads.per.data.dir=1
+
+# Number of fetcher threads used to replicate messages from a source broker. Increasing this 
+# value can increase the degree of I/O parallelism in the follower broker.
+num.replica.fetchers={{ kafka_num_replica_fetchers|default(1) }}
 
 ############################# Log Flush Policy #############################
 
@@ -103,35 +123,18 @@ num.replica.fetchers=4
 # from the end of the log.
 
 # The minimum age of a log file to be eligible for deletion
-log.retention.hours={{ kafka_log_retention_hours }}
+log.retention.hours={{ kafka_log_retention_hours|default(168) }}
 
 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining
 # segments don't drop below log.retention.bytes.
 #log.retention.bytes=1073741824
 
 # The maximum size of a log segment file. When this size is reached a new log segment will be created.
-log.segment.bytes=536870912
+log.segment.bytes=1073741824
 
 # The interval at which log segments are checked to see if they can be deleted according
 # to the retention policies
-log.retention.check.interval.ms=60000
-
-# By default the log cleaner is disabled and the log retention policy will default to just delete segments after their retention expires.
-# If log.cleaner.enable=true is set the cleaner will be enabled and individual logs can then be marked for log compaction.
-# Always keep enabled now: https://issues.apache.org/jira/browse/KAFKA-3000
-log.cleaner.enable=true
-
-# The number of partitions for the offset commit topic (should not change after deployment)
-offsets.topic.num.partitions={{ kafka_offsets_topic_num_partitions|default(50) }}
-
-# The replication factor for the offsets topic (set higher to ensure availability). To ensure that the effective replication 
-# factor of the offsets topic is the configured value, the number of alive brokers has to be at least the replication factor 
-# at the time of the first request for the offsets topic. If not, either the offsets topic creation will fail or it will get 
-# a replication factor of min(alive brokers, configured replication factor)
-offsets.topic.replication.factor={{ kafka_offsets_topic_replication_factor|default(3) }}
-
-# The offsets topic segment bytes should be kept relatively small in order to facilitate faster log compaction and cache loads
-offsets.topic.segment.bytes={{ kafka_offsets_topic_segmant_bytes|default(104857600) }}
+log.retention.check.interval.ms=300000
 
 ############################# Zookeeper #############################
 
@@ -143,4 +146,4 @@ offsets.topic.segment.bytes={{ kafka_offsets_topic_segmant_bytes|default(1048576
 zookeeper.connect={% for host in zookeeper_host_list %}{{ host }}:{{ zookeeper_client_port|default(2181) }}{% if not loop.last %},{% endif %}{% endfor %}
 
 # Timeout in ms for connecting to zookeeper
-zookeeper.connection.timeout.ms=1000000
+zookeeper.connection.timeout.ms={{ kafka_zookeeper_connection_timeout|default(6000) }}