| # 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 |
| |
| # The node id associated with this instance's roles |
| node.id=2 |
| |
| # The connect string for the controller quorum |
| controller.quorum.voters=1@localhost:9093 |
| |
| ############################# Socket Server Settings ############################# |
| |
| # The address the socket server listens on. If not configured, the host name will be equal to the value of |
| # java.net.InetAddress.getCanonicalHostName(), with PLAINTEXT listener name, and port 9092. |
| # FORMAT: |
| # listeners = listener_name://host_name:port |
| # EXAMPLE: |
| # listeners = PLAINTEXT://your.host.name:9092 |
| listeners=PLAINTEXT://localhost:9092 |
| |
| # Name of listener used for communication between brokers. |
| inter.broker.listener.name=PLAINTEXT |
| |
| # Listener name, hostname and port the broker will advertise to clients. |
| # If not set, it uses the value for "listeners". |
| advertised.listeners=PLAINTEXT://localhost:9092 |
| |
| # A comma-separated list of the names of the listeners used by the controller. |
| # This is required if running in KRaft mode. On a node with `process.roles=broker`, only the first listed listener will be used by the broker. |
| 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-broker-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 |