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- # 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.
- #
- # This configuration file is intended for use in KRaft mode, where
- # Apache ZooKeeper is not present. See config/kraft/README.md for details.
- #
- ############################# Server Basics #############################
- # The role of this server. Setting this puts us in KRaft mode
- process.roles=broker,controller
- # The node id associated with this instance's roles
- node.id=2
- # The connect string for the controller quorum
- controller.quorum.voters=1@kafka-node-1:19092,2@kafka-node-2:19092,3@kafka-node-3:19092
- ############################# 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,CONTROLLER://:19092
- inter.broker.listener.name=PLAINTEXT
- # 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://localhost:9092
- # Listener, host name, and port for the controller to advertise to the brokers. If
- # this server is a controller, this listener must be configured.
- controller.listener.names=CONTROLLER
- # 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=CONTROLLER:PLAINTEXT,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 separated list of directories under which to store log files
- log.dirs=/tmp/kraft-combined-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 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.
- # 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 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
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