文章目录
- OverView
- Topic主题命令行操作
- 重要参数
- 帮助文档
- 实操
- 生产者命令行操作
- 重要参数
- 帮助文档
- 实操
- 消费者命令行操作
- 重要参数
- 帮助文档
- 实操
OverView
Topic主题命令行操作
重要参数
| 参数 | 描述 |
|---|---|
--bootstrap-server | 连接Kafka Broker的主机名和端口号 |
--topic | 操作的主题名称 |
--create | 创建主题 |
--delete | 删除主题 |
--alter | 修改主题 |
--list | 查看所有主题 |
--describe | 查看主题详细描述 |
--partitions | 设置主题分区数 |
--replication-factor | 设置主题分区副本 |
--config | 更新系统默认的配置 |
这些参数是用于操作和管理Apache Kafka主题的命令行工具参数，通常用于kafka-topics.sh工具。以下是每个参数的描述：
-
--bootstrap-server：指定要连接的Kafka Broker的主机名和端口号，用于建立连接到Kafka集群的初始引导服务器。 -
--topic：指定操作的主题的名称，这是执行各种操作的目标主题。 -
--create：用于创建一个新的Kafka主题。在使用此参数时，需要提供主题名称和其他相关配置，例如分区数、副本因子等。 -
--delete：用于删除指定的Kafka主题。要谨慎使用此参数，因为删除主题将删除主题的所有数据和配置。 -
--alter：用于修改主题的配置，例如更改分区数、副本因子等。需要指定要修改的主题以及新的配置。 -
--list：列出Kafka集群中所有的主题名称。 -
--describe：查看指定主题的详细描述，包括主题的配置、分区信息、副本分配等。 -
--partitions：用于设置主题的分区数，通常与--create或--alter一起使用，以定义主题的分区数量。 -
--replication-factor：用于设置主题的分区副本因子，通常与--create或--alter一起使用，以定义主题的分区副本数量。 -
--config：用于更新系统默认的Kafka主题配置，可以设置不同的主题级别的配置参数。
这些参数是Kafka管理工具的一部分，用于在Kafka集群上执行各种管理任务，例如创建、删除、配置和查看主题。根据具体的任务，您可以使用这些参数中的一个或多个来执行相应的操作。
帮助文档
[root@localhost bin]# ./kafka-topics.sh
Create, delete, describe, or change a topic.
Option Description
------ -----------
--alter Alter the number of partitions and
replica assignment. Update the
configuration of an existing topic
via --alter is no longer supported
here (the kafka-configs CLI supports
altering topic configs with a --
bootstrap-server option).
--at-min-isr-partitions if set when describing topics, only
show partitions whose isr count is
equal to the configured minimum.
--bootstrap-server <String: server to REQUIRED: The Kafka server to connect
connect to> to.
--command-config <String: command Property file containing configs to be
config property file> passed to Admin Client. This is used
only with --bootstrap-server option
for describing and altering broker
configs.
--config <String: name=value> A topic configuration override for the
topic being created or altered. The
following is a list of valid
configurations:
cleanup.policy
compression.type
delete.retention.ms
file.delete.delay.ms
flush.messages
flush.ms
follower.replication.throttled.
replicas
index.interval.bytes
leader.replication.throttled.replicas
local.retention.bytes
local.retention.ms
max.compaction.lag.ms
max.message.bytes
message.downconversion.enable
message.format.version
message.timestamp.after.max.ms
message.timestamp.before.max.ms
message.timestamp.difference.max.ms
message.timestamp.type
min.cleanable.dirty.ratio
min.compaction.lag.ms
min.insync.replicas
preallocate
remote.storage.enable
retention.bytes
retention.ms
segment.bytes
segment.index.bytes
segment.jitter.ms
segment.ms
unclean.leader.election.enable
See the Kafka documentation for full
details on the topic configs. It is
supported only in combination with --
create if --bootstrap-server option
is used (the kafka-configs CLI
supports altering topic configs with
a --bootstrap-server option).
--create Create a new topic.
--delete Delete a topic
--delete-config <String: name> A topic configuration override to be
removed for an existing topic (see
the list of configurations under the
--config option). Not supported with
the --bootstrap-server option.
--describe List details for the given topics.
--exclude-internal exclude internal topics when running
list or describe command. The
internal topics will be listed by
default
--help Print usage information.
--if-exists if set when altering or deleting or
describing topics, the action will
only execute if the topic exists.
--if-not-exists if set when creating topics, the
action will only execute if the
topic does not already exist.
--list List all available topics.
--partitions <Integer: # of partitions> The number of partitions for the topic
being created or altered (WARNING:
If partitions are increased for a
topic that has a key, the partition
logic or ordering of the messages
will be affected). If not supplied
for create, defaults to the cluster
default.
--replica-assignment <String: A list of manual partition-to-broker
broker_id_for_part1_replica1 : assignments for the topic being
broker_id_for_part1_replica2 , created or altered.
broker_id_for_part2_replica1 :
broker_id_for_part2_replica2 , ...>
--replication-factor <Integer: The replication factor for each
replication factor> partition in the topic being
created. If not supplied, defaults
to the cluster default.
--topic <String: topic> The topic to create, alter, describe
or delete. It also accepts a regular
expression, except for --create
option. Put topic name in double
quotes and use the '\' prefix to
escape regular expression symbols; e.
g. "test\.topic".
--topic-id <String: topic-id> The topic-id to describe.This is used
only with --bootstrap-server option
for describing topics.
--topics-with-overrides if set when describing topics, only
show topics that have overridden
configs
--unavailable-partitions if set when describing topics, only
show partitions whose leader is not
available
--under-min-isr-partitions if set when describing topics, only
show partitions whose isr count is
less than the configured minimum.
--under-replicated-partitions if set when describing topics, only
show under replicated partitions
--version Display Kafka version.
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --list
[root@localhost bin]#
实操
[root@localhost bin]# 创建一个主题名为artisan的topic
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --create --replication-factor 3 --partitions 3 --topic artisan
Error while executing topic command : Replication factor: 3 larger than available brokers: 1.
[2023-10-25 15:11:52,489] ERROR org.apache.kafka.common.errors.InvalidReplicationFactorException: Replication factor: 3 larger than available brokers: 1.
(kafka.admin.TopicCommand$)
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]# 创建一个主题名为artisan的topic
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --create --replication-factor 1 --partitions 3 --topic artisan
Created topic artisan.
[root@localhost bin]#
[root@localhost bin]# 看当前服务器中的所有topic
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --list
artisan
[root@localhost bin]# 查看Topic的详情
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --describe --topic artisan
Topic: artisan TopicId: CQ8T4OtdR_aPJVYRTp9Jbg PartitionCount: 3 ReplicationFactor: 1 Configs:
Topic: artisan Partition: 0 Leader: 0 Replicas: 0 Isr: 0
Topic: artisan Partition: 1 Leader: 0 Replicas: 0 Isr: 0
Topic: artisan Partition: 2 Leader: 0 Replicas: 0 Isr: 0
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]# 修改分区数（注意：分区数只能增加，不能减少）
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --alter --topic artisan --partitions 4
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]# 再次查看Topic的详情
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --describe --topic artisan
Topic: artisan TopicId: CQ8T4OtdR_aPJVYRTp9Jbg PartitionCount: 4 ReplicationFactor: 1 Configs:
Topic: artisan Partition: 0 Leader: 0 Replicas: 0 Isr: 0
Topic: artisan Partition: 1 Leader: 0 Replicas: 0 Isr: 0
Topic: artisan Partition: 2 Leader: 0 Replicas: 0 Isr: 0
Topic: artisan Partition: 3 Leader: 0 Replicas: 0 Isr: 0
[root@localhost bin]# 删除artian主题
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --delete --topic artisan
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --list
[root@localhost bin]#
修改分区数（ 分区数只能增加，不能减少）
生产者命令行操作
重要参数
| 参数 | 描述 |
|---|---|
--bootstrap-server | 连接Kafka Broker的主机名和端口号 |
--topic | 操作的主题名称 |
帮助文档
# 查看帮助文档
[root@localhost bin]# ./kafka-console-producer.sh
Missing required option(s) [bootstrap-server]
Option Description
------ -----------
--batch-size <Integer: size> Number of messages to send in a single
batch if they are not being sent
synchronously. please note that this
option will be replaced if max-
partition-memory-bytes is also set
(default: 16384)
--bootstrap-server <String: server to REQUIRED unless --broker-list
connect to> (deprecated) is specified. The server
(s) to connect to. The broker list
string in the form HOST1:PORT1,HOST2:
PORT2.
--broker-list <String: broker-list> DEPRECATED, use --bootstrap-server
instead; ignored if --bootstrap-
server is specified. The broker
list string in the form HOST1:PORT1,
HOST2:PORT2.
--compression-codec [String: The compression codec: either 'none',
compression-codec] 'gzip', 'snappy', 'lz4', or 'zstd'.
If specified without value, then it
defaults to 'gzip'
--help Print usage information.
--line-reader <String: reader_class> The class name of the class to use for
reading lines from standard in. By
default each line is read as a
separate message. (default: kafka.
tools.
ConsoleProducer$LineMessageReader)
--max-block-ms <Long: max block on The max time that the producer will
send> block for during a send request.
(default: 60000)
--max-memory-bytes <Long: total memory The total memory used by the producer
in bytes> to buffer records waiting to be sent
to the server. This is the option to
control `buffer.memory` in producer
configs. (default: 33554432)
--max-partition-memory-bytes <Integer: The buffer size allocated for a
memory in bytes per partition> partition. When records are received
which are smaller than this size the
producer will attempt to
optimistically group them together
until this size is reached. This is
the option to control `batch.size`
in producer configs. (default: 16384)
--message-send-max-retries <Integer> Brokers can fail receiving the message
for multiple reasons, and being
unavailable transiently is just one
of them. This property specifies the
number of retries before the
producer give up and drop this
message. This is the option to
control `retries` in producer
configs. (default: 3)
--metadata-expiry-ms <Long: metadata The period of time in milliseconds
expiration interval> after which we force a refresh of
metadata even if we haven't seen any
leadership changes. This is the
option to control `metadata.max.age.
ms` in producer configs. (default:
300000)
--producer-property <String: A mechanism to pass user-defined
producer_prop> properties in the form key=value to
the producer.
--producer.config <String: config file> Producer config properties file. Note
that [producer-property] takes
precedence over this config.
--property <String: prop> A mechanism to pass user-defined
properties in the form key=value to
the message reader. This allows
custom configuration for a user-
defined message reader.
Default properties include:
parse.key=false
parse.headers=false
ignore.error=false
key.separator=\t
headers.delimiter=\t
headers.separator=,
headers.key.separator=:
null.marker= When set, any fields
(key, value and headers) equal to
this will be replaced by null
Default parsing pattern when:
parse.headers=true and parse.key=true:
"h1:v1,h2:v2...\tkey\tvalue"
parse.key=true:
"key\tvalue"
parse.headers=true:
"h1:v1,h2:v2...\tvalue"
--reader-config <String: config file> Config properties file for the message
reader. Note that [property] takes
precedence over this config.
--request-required-acks <String: The required `acks` of the producer
request required acks> requests (default: -1)
--request-timeout-ms <Integer: request The ack timeout of the producer
timeout ms> requests. Value must be non-negative
and non-zero. (default: 1500)
--retry-backoff-ms <Long> Before each retry, the producer
refreshes the metadata of relevant
topics. Since leader election takes
a bit of time, this property
specifies the amount of time that
the producer waits before refreshing
the metadata. This is the option to
control `retry.backoff.ms` in
producer configs. (default: 100)
--socket-buffer-size <Integer: size> The size of the tcp RECV size. This is
the option to control `send.buffer.
bytes` in producer configs.
(default: 102400)
--sync If set message send requests to the
brokers are synchronously, one at a
time as they arrive.
--timeout <Long: timeout_ms> If set and the producer is running in
asynchronous mode, this gives the
maximum amount of time a message
will queue awaiting sufficient batch
size. The value is given in ms. This
is the option to control `linger.ms`
in producer configs. (default: 1000)
--topic <String: topic> REQUIRED: The topic id to produce
messages to.
--version Display Kafka version.
实操
[root@localhost bin]# ./kafka-topics.sh --bootstrap-server 127.0.0.1:9092 --create --replication-factor 1 --partitions 3 --topic artisan
Created topic artisan.
[root@localhost bin]#
[root@localhost bin]#
[root@localhost bin]# ./kafka-console-producer.sh --bootstrap-server 127.0.0.1:9092 --topic artisan
>test
>artisan (在这之后启动consumer的消费，默认只能收到之后的消息)
>666
>
消费者命令行操作
重要参数
| 参数 | 描述 |
|---|---|
--bootstrap-server | 连接Kafka Broker的主机名和端口号 |
--topic | 操作的topic名称 |
--from-beginning | 从头开始消费 |
--group | 指定消费者组名称 |
帮助文档
# 查看帮助文档
[root@localhost bin]# ./kafka-console-consumer.sh
This tool helps to read data from Kafka topics and outputs it to standard output.
Option Description
------ -----------
--bootstrap-server <String: server to REQUIRED: The server(s) to connect to.
connect to>
--consumer-property <String: A mechanism to pass user-defined
consumer_prop> properties in the form key=value to
the consumer.
--consumer.config <String: config file> Consumer config properties file. Note
that [consumer-property] takes
precedence over this config.
--enable-systest-events Log lifecycle events of the consumer
in addition to logging consumed
messages. (This is specific for
system tests.)
--formatter <String: class> The name of a class to use for
formatting kafka messages for
display. (default: kafka.tools.
DefaultMessageFormatter)
--formatter-config <String: config Config properties file to initialize
file> the message formatter. Note that
[property] takes precedence over
this config.
--from-beginning If the consumer does not already have
an established offset to consume
from, start with the earliest
message present in the log rather
than the latest message.
--group <String: consumer group id> The consumer group id of the consumer.
--help Print usage information.
--include <String: Java regex (String)> Regular expression specifying list of
topics to include for consumption.
--isolation-level <String> Set to read_committed in order to
filter out transactional messages
which are not committed. Set to
read_uncommitted to read all
messages. (default: read_uncommitted)
--key-deserializer <String:
deserializer for key>
--max-messages <Integer: num_messages> The maximum number of messages to
consume before exiting. If not set,
consumption is continual.
--offset <String: consume offset> The offset to consume from (a non-
negative number), or 'earliest'
which means from beginning, or
'latest' which means from end
(default: latest)
--partition <Integer: partition> The partition to consume from.
Consumption starts from the end of
the partition unless '--offset' is
specified.
--property <String: prop> The properties to initialize the
message formatter. Default
properties include:
print.timestamp=true|false
print.key=true|false
print.offset=true|false
print.partition=true|false
print.headers=true|false
print.value=true|false
key.separator=<key.separator>
line.separator=<line.separator>
headers.separator=<line.separator>
null.literal=<null.literal>
key.deserializer=<key.deserializer>
value.deserializer=<value.
deserializer>
header.deserializer=<header.
deserializer>
Users can also pass in customized
properties for their formatter; more
specifically, users can pass in
properties keyed with 'key.
deserializer.', 'value.
deserializer.' and 'headers.
deserializer.' prefixes to configure
their deserializers.
--skip-message-on-error If there is an error when processing a
message, skip it instead of halt.
--timeout-ms <Integer: timeout_ms> If specified, exit if no message is
available for consumption for the
specified interval.
--topic <String: topic> The topic to consume on.
--value-deserializer <String:
deserializer for values>
--version Display Kafka version.
--whitelist <String: Java regex DEPRECATED, use --include instead;
(String)> ignored if --include specified.
Regular expression specifying list
of topics to include for consumption.
实操
[root@localhost bin]# ./kafka-console-consumer.sh --bootstrap-server 127.0.0.1:9092 --topic artisan
666
# 从头开始消费
[root@localhost bin]# ./kafka-console-consumer.sh --bootstrap-server 127.0.0.1:9092 --from-beginning --topic artisan
test
artisan
666
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