| # 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={broker_id} | |
| ############################# Socket Server Settings ############################# | |
| listeners={transport}://{host}:{port} | |
| security.inter.broker.protocol={transport} | |
| {sasl_config} | |
| ssl.keystore.location={ssl_dir}/kafka.server.keystore.jks | |
| ssl.keystore.password=foobar | |
| ssl.key.password=foobar | |
| ssl.truststore.location={ssl_dir}/kafka.server.truststore.jks | |
| ssl.truststore.password=foobar | |
| authorizer.class.name=kafka.security.auth.SimpleAclAuthorizer | |
| allow.everyone.if.no.acl.found=true | |
| # The port the socket server listens on | |
| #port=9092 | |
| # Hostname the broker will bind to. If not set, the server will bind to all interfaces | |
| #host.name=localhost | |
| # 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=<hostname routable by clients> | |
| # 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=<port accessible by clients> | |
| # The number of threads handling network requests | |
| num.network.threads=3 | |
| # The number of threads doing 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_dir}/data | |
| # 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={partitions} | |
| default.replication.factor={replicas} | |
| ## Short Replica Lag -- Drops failed brokers out of ISR | |
| replica.lag.time.max.ms=1000 | |
| replica.socket.timeout.ms=1000 | |
| ############################# 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 | |
| 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. | |
| #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 | |
| # 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. | |
| log.cleaner.enable=false | |
| # tune down offset topics to reduce setup time in tests | |
| offsets.commit.timeout.ms=500 | |
| offsets.topic.num.partitions=2 | |
| offsets.topic.replication.factor=1 | |
| # Allow shorter session timeouts for tests | |
| group.min.session.timeout.ms=1000 | |
| ############################# 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={zk_host}:{zk_port}/{zk_chroot} | |
| # Timeout in ms for connecting to zookeeper | |
| zookeeper.connection.timeout.ms=30000 | |
| # We want to expire kafka broker sessions quickly when brokers die b/c we restart them quickly | |
| zookeeper.session.timeout.ms=500 | |