Merge pull request #43 from Yolean/kafka-011-config-map

Use config map for broker configuration

10broker-config.yml

@@ -0,0 +1,239 @@
+kind: ConfigMap
+metadata:
+  name: broker-config
+  namespace: kafka
+apiVersion: v1
+data:
+  server.properties: |-
+    # Licensed to the Apache Software Foundation (ASF) under one or more
+    # contributor license agreements.  See the NOTICE file distributed with
+    # this work for additional information regarding copyright ownership.
+    # The ASF licenses this file to You under the Apache License, Version 2.0
+    # (the "License"); you may not use this file except in compliance with
+    # the License.  You may obtain a copy of the License at
+    #
+    #    http://www.apache.org/licenses/LICENSE-2.0
+    #
+    # Unless required by applicable law or agreed to in writing, software
+    # distributed under the License is distributed on an "AS IS" BASIS,
+    # 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 #############################
+
+    # The id of the broker. This must be set to a unique integer for each broker.
+    broker.id=0
+
+    # Switch to enable topic deletion or not, default value is false
+    #delete.topic.enable=true
+
+    ############################# Socket Server Settings #############################
+
+    # The address the socket server listens on. It will get the value returned from
+    # java.net.InetAddress.getCanonicalHostName() if not configured.
+    #   FORMAT:
+    #     listeners = listener_name://host_name:port
+    #   EXAMPLE:
+    #     listeners = PLAINTEXT://your.host.name:9092
+    #listeners=PLAINTEXT://:9092
+
+    # 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://your.host.name:9092
+
+    # Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details
+    #listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
+
+    # The number of threads that the server uses for receiving requests from the network and sending responses to the network
+    num.network.threads=3
+
+    # The number of threads that the server uses for processing requests, which may include disk I/O
+    num.io.threads=8
+
+    # The send buffer (SO_SNDBUF) used by the socket server
+    socket.send.buffer.bytes=102400
+
+    # The receive buffer (SO_RCVBUF) used by the socket server
+    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
+    log.dirs=/tmp/kafka-logs
+
+    # 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=1
+
+    # 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
+
+    ############################# Internal Topic Settings  #############################
+    # The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
+    # For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
+    offsets.topic.replication.factor=1
+    transaction.state.log.replication.factor=1
+    transaction.state.log.min.isr=1
+
+    ############################# Log Flush Policy #############################
+
+    # Messages are immediately written to the filesystem but by default we only fsync() to sync
+    # the OS cache lazily. The following configurations control the flush of data to disk.
+    # There are a few important trade-offs here:
+    #    1. Durability: Unflushed data may be lost if you are not using replication.
+    #    2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush.
+    #    3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks.
+    # The settings below allow one to configure the flush policy to flush data after a period of time or
+    # every N messages (or both). This can be done globally and overridden on a per-topic basis.
+
+    # The number of messages to accept before forcing a flush of data to disk
+    #log.flush.interval.messages=10000
+
+    # The maximum amount of time a message can sit in a log before we force a flush
+    #log.flush.interval.ms=1000
+
+    ############################# Log Retention Policy #############################
+
+    # The following configurations control the disposal of log segments. The policy can
+    # be set to delete segments after a period of time, or after a given size has accumulated.
+    # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
+    # from the end of the log.
+
+    # The minimum age of a log file to be eligible for deletion due to age
+    log.retention.hours=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. Functions independently of log.retention.hours.
+    #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=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=300000
+
+    ############################# Zookeeper #############################
+
+    # Zookeeper connection string (see zookeeper docs for details).
+    # This is a comma separated host:port pairs, each corresponding to a zk
+    # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002".
+    # You can also append an optional chroot string to the urls to specify the
+    # root directory for all kafka znodes.
+    zookeeper.connect=localhost:2181
+
+    # Timeout in ms for connecting to zookeeper
+    zookeeper.connection.timeout.ms=6000
+
+
+    ############################# Group Coordinator Settings #############################
+
+    # The following configuration specifies the time, in milliseconds, that the GroupCoordinator will delay the initial consumer rebalance.
+    # The rebalance will be further delayed by the value of group.initial.rebalance.delay.ms as new members join the group, up to a maximum of max.poll.interval.ms.
+    # The default value for this is 3 seconds.
+    # We override this to 0 here as it makes for a better out-of-the-box experience for development and testing.
+    # However, in production environments the default value of 3 seconds is more suitable as this will help to avoid unnecessary, and potentially expensive, rebalances during application startup.
+    group.initial.rebalance.delay.ms=0
+
+  log4j.properties: |-
+    # Licensed to the Apache Software Foundation (ASF) under one or more
+    # contributor license agreements.  See the NOTICE file distributed with
+    # this work for additional information regarding copyright ownership.
+    # The ASF licenses this file to You under the Apache License, Version 2.0
+    # (the "License"); you may not use this file except in compliance with
+    # the License.  You may obtain a copy of the License at
+    #
+    #    http://www.apache.org/licenses/LICENSE-2.0
+    #
+    # Unless required by applicable law or agreed to in writing, software
+    # distributed under the License is distributed on an "AS IS" BASIS,
+    # 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.
+
+    # Unspecified loggers and loggers with additivity=true output to server.log and stdout
+    # Note that INFO only applies to unspecified loggers, the log level of the child logger is used otherwise
+    log4j.rootLogger=INFO, stdout, kafkaAppender
+
+    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.DailyRollingFileAppender
+    log4j.appender.kafkaAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.kafkaAppender.File=${kafka.logs.dir}/server.log
+    log4j.appender.kafkaAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.kafkaAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.stateChangeAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.stateChangeAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.stateChangeAppender.File=${kafka.logs.dir}/state-change.log
+    log4j.appender.stateChangeAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.stateChangeAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.requestAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.requestAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.requestAppender.File=${kafka.logs.dir}/kafka-request.log
+    log4j.appender.requestAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.requestAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.cleanerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.cleanerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.cleanerAppender.File=${kafka.logs.dir}/log-cleaner.log
+    log4j.appender.cleanerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.cleanerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.controllerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.controllerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.controllerAppender.File=${kafka.logs.dir}/controller.log
+    log4j.appender.controllerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.controllerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    log4j.appender.authorizerAppender=org.apache.log4j.DailyRollingFileAppender
+    log4j.appender.authorizerAppender.DatePattern='.'yyyy-MM-dd-HH
+    log4j.appender.authorizerAppender.File=${kafka.logs.dir}/kafka-authorizer.log
+    log4j.appender.authorizerAppender.layout=org.apache.log4j.PatternLayout
+    log4j.appender.authorizerAppender.layout.ConversionPattern=[%d] %p %m (%c)%n
+
+    # Change the two lines below to adjust ZK client logging
+    log4j.logger.org.I0Itec.zkclient.ZkClient=INFO
+    log4j.logger.org.apache.zookeeper=INFO
+
+    # Change the two lines below to adjust the general broker logging level (output to server.log and stdout)
+    log4j.logger.kafka=INFO
+    log4j.logger.org.apache.kafka=INFO
+
+    # Change to DEBUG or TRACE to enable request logging
+    log4j.logger.kafka.request.logger=WARN, requestAppender
+    log4j.additivity.kafka.request.logger=false
+
+    # Uncomment the lines below and change log4j.logger.kafka.network.RequestChannel$ to TRACE for additional output
+    # related to the handling of requests
+    #log4j.logger.kafka.network.Processor=TRACE, requestAppender
+    #log4j.logger.kafka.server.KafkaApis=TRACE, requestAppender
+    #log4j.additivity.kafka.server.KafkaApis=false
+    log4j.logger.kafka.network.RequestChannel$=WARN, requestAppender
+    log4j.additivity.kafka.network.RequestChannel$=false
+
+    log4j.logger.kafka.controller=TRACE, controllerAppender
+    log4j.additivity.kafka.controller=false
+
+    log4j.logger.kafka.log.LogCleaner=INFO, cleanerAppender
+    log4j.additivity.kafka.log.LogCleaner=false
+
+    log4j.logger.state.change.logger=TRACE, stateChangeAppender
+    log4j.additivity.state.change.logger=false
+
+    # Change to DEBUG to enable audit log for the authorizer
+    log4j.logger.kafka.authorizer.logger=WARN, authorizerAppender
+    log4j.additivity.kafka.authorizer.logger=false

50kafka.yml

@@ -40,6 +40,7 @@ spec:
         - >
           ./bin/kafka-server-start.sh
           config/server.properties
+          --override zookeeper.connect=zookeeper:2181
           --override log.retention.hours=-1
           --override log.dirs=/var/lib/kafka/data/topics
           --override broker.id=${HOSTNAME##*-}
@@ -54,8 +55,14 @@ spec:
             - -c
             - 'echo "" | nc -w 1 127.0.0.1 9092'
         volumeMounts:
+        - name: config
+          mountPath: /opt/kafka/config
         - name: data
           mountPath: /var/lib/kafka/data
+      volumes:
+      - name: config
+        configMap:
+          name: broker-config
   volumeClaimTemplates:
   - metadata:
       name: data

update-kafka-image.sh

@@ -3,6 +3,8 @@
 IMAGE=$1
 [ -z "$IMAGE" ] && echo "First argument should be the image to set" && exit 1
 
+[[ $IMAGE != solsson/kafka:* ]] && echo "Should be the full image identifier" && exit 1
+
 for F in ./ test/ zookeeper/; do
   sed -i "s|image: solsson/kafka:.*|image: $IMAGE|" $F*.yml
 done