| # 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. |
| kind: ConfigMap |
| metadata: |
| name: broker-config |
| namespace: kafka |
| apiVersion: v1 |
| data: |
| init.sh: |- |
| #!/bin/bash |
| set -e |
| set -x |
| cp /etc/kafka-configmap/log4j.properties /etc/kafka/ |
| |
| KAFKA_BROKER_ID=${HOSTNAME##*-} |
| SEDS=("s/#init#broker.id=#init#/broker.id=$KAFKA_BROKER_ID/") |
| LABELS="kafka-broker-id=$KAFKA_BROKER_ID" |
| ANNOTATIONS="" |
| |
| hash kubectl 2>/dev/null || { |
| SEDS+=("s/#init#broker.rack=#init#/#init#broker.rack=# kubectl not found in path/") |
| } && { |
| ZONE=$(kubectl get node "$NODE_NAME" -o=go-template='{{index .metadata.labels "failure-domain.beta.kubernetes.io/zone"}}') |
| if [ "x$ZONE" == "x<no value>" ]; then |
| SEDS+=("s/#init#broker.rack=#init#/#init#broker.rack=# zone label not found for node $NODE_NAME/") |
| else |
| SEDS+=("s/#init#broker.rack=#init#/broker.rack=$ZONE/") |
| LABELS="$LABELS kafka-broker-rack=$ZONE" |
| fi |
| OUTSIDE_HOST="" |
| while [ -z $OUTSIDE_HOST ]; do |
| echo "Waiting for end point..." |
| OUTSIDE_HOST=$(kubectl get svc outside-${KAFKA_BROKER_ID} --template="{{range .status.loadBalancer.ingress}}{{.ip}}{{end}}") |
| [ -z "$OUTSIDE_HOST" ] && sleep 10 |
| done |
| # OUTSIDE_HOST=$(kubectl get node "$NODE_NAME" -o jsonpath='{.status.addresses[?(@.type=="InternalIP")].address}') |
| OUTSIDE_PORT=3240${KAFKA_BROKER_ID} |
| SEDS+=("s|#init#advertised.listeners=OUTSIDE://#init#|advertised.listeners=OUTSIDE://${OUTSIDE_HOST}:${OUTSIDE_PORT}|") |
| ANNOTATIONS="$ANNOTATIONS kafka-listener-outside-host=$OUTSIDE_HOST kafka-listener-outside-port=$OUTSIDE_PORT" |
| |
| if [ ! -z "$LABELS" ]; then |
| kubectl -n $POD_NAMESPACE label pod $POD_NAME $LABELS || echo "Failed to label $POD_NAMESPACE.$POD_NAME - RBAC issue?" |
| fi |
| if [ ! -z "$ANNOTATIONS" ]; then |
| kubectl -n $POD_NAMESPACE annotate pod $POD_NAME $ANNOTATIONS || echo "Failed to annotate $POD_NAMESPACE.$POD_NAME - RBAC issue?" |
| fi |
| } |
| printf '%s\n' "${SEDS[@]}" | sed -f - /etc/kafka-configmap/server.properties > /etc/kafka/server.properties.tmp |
| [ $? -eq 0 ] && mv /etc/kafka/server.properties.tmp /etc/kafka/server.properties |
| |
| server.properties: |- |
| ############################# Log Basics ############################# |
| |
| # A comma seperated list of directories under which to store log files |
| # Overrides log.dir |
| log.dirs=/var/lib/kafka/data/topics |
| |
| # 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=12 |
| |
| default.replication.factor=3 |
| |
| min.insync.replicas=2 |
| |
| auto.create.topics.enable=false |
| |
| # 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 |
| |
| ############################# Server Basics ############################# |
| |
| # The id of the broker. This must be set to a unique integer for each broker. |
| #init#broker.id=#init# |
| |
| #init#broker.rack=#init# |
| |
| ############################# 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 |
| listeners=OUTSIDE://:9094,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 |
| #init#advertised.listeners=OUTSIDE://#init#,PLAINTEXT://: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 |
| listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL,OUTSIDE:PLAINTEXT |
| inter.broker.listener.name=PLAINTEXT |
| |
| # 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 |
| |
| ############################# 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 excessive 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. |
| |
| # https://cwiki.apache.org/confluence/display/KAFKA/KIP-186%3A+Increase+offsets+retention+default+to+7+days |
| offsets.retention.minutes=10080 |
| |
| # The minimum age of a log file to be eligible for deletion due to age |
| log.retention.hours=-1 |
| |
| # A size-based retention policy for logs. Segments are pruned from the log unless the remaining |
| # segments 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=zookeeper: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: |- |
| # 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 |
| |
| 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 |
