kafka的一个动态配置工具，可以通过命令行对系统进行动态配置，但并不是所有的配置项都支持的。
$ ./kafka-configs.bat
This tool helps to manipulate and describe entity config for a topic, client, user or broker
Option Description
------ -----------
--add-config <String> Key Value pairs of configs to add.
Square brackets can be used to group
values which contain commas: 'k1=v1,
k2=[v1,v2,v2],k3=v3'. The following
is a list of valid configurations:
For entity-type 'topics':
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
max.compaction.lag.ms
max.message.bytes
message.downconversion.enable
message.format.version
message.timestamp.difference.max.ms
message.timestamp.type
min.cleanable.dirty.ratio
min.compaction.lag.ms
min.insync.replicas
preallocate
retention.bytes
retention.ms
segment.bytes
segment.index.bytes
segment.jitter.ms
segment.ms
unclean.leader.election.enable
For entity-type 'brokers':
log.message.timestamp.type
ssl.client.auth
log.retention.ms
sasl.login.refresh.window.jitter
sasl.kerberos.ticket.renew.window.
factor
log.preallocate
log.index.size.max.bytes
sasl.login.refresh.window.factor
ssl.truststore.type
ssl.keymanager.algorithm
log.cleaner.io.buffer.load.factor
sasl.login.refresh.min.period.seconds
ssl.key.password
background.threads
log.retention.bytes
ssl.trustmanager.algorithm
log.segment.bytes
max.connections.per.ip.overrides
log.cleaner.delete.retention.ms
log.segment.delete.delay.ms
min.insync.replicas
ssl.keystore.location
ssl.cipher.suites
log.roll.jitter.ms
log.cleaner.backoff.ms
sasl.jaas.config
principal.builder.class
log.flush.interval.ms
log.cleaner.max.compaction.lag.ms
max.connections
log.cleaner.dedupe.buffer.size
log.flush.interval.messages
advertised.listeners
num.io.threads
listener.security.protocol.map
log.message.downconversion.enable
sasl.enabled.mechanisms
sasl.login.refresh.buffer.seconds
ssl.truststore.password
listeners
metric.reporters
ssl.protocol
sasl.kerberos.ticket.renew.jitter
ssl.keystore.password
sasl.mechanism.inter.broker.protocol
log.cleanup.policy
sasl.kerberos.principal.to.local.rules
sasl.kerberos.min.time.before.relogin
num.recovery.threads.per.data.dir
log.cleaner.io.max.bytes.per.second
log.roll.ms
ssl.endpoint.identification.algorithm
unclean.leader.election.enable
message.max.bytes
log.cleaner.threads
log.cleaner.io.buffer.size
max.connections.per.ip
sasl.kerberos.service.name
ssl.provider
follower.replication.throttled.rate
log.index.interval.bytes
log.cleaner.min.compaction.lag.ms
log.message.timestamp.difference.max.
ms
ssl.enabled.protocols
log.cleaner.min.cleanable.ratio
replica.alter.log.dirs.io.max.bytes.
per.second
ssl.keystore.type
ssl.secure.random.implementation
ssl.truststore.location
sasl.kerberos.kinit.cmd
leader.replication.throttled.rate
num.network.threads
compression.type
num.replica.fetchers
For entity-type 'users':
request_percentage
producer_byte_rate
SCRAM-SHA-256
SCRAM-SHA-512
consumer_byte_rate
For entity-type 'clients':
request_percentage
producer_byte_rate
consumer_byte_rate
Entity types 'users' and 'clients' may
be specified together to update
config for clients of a specific
user.
--alter Alter the configuration for the entity.
--bootstrap-server <String: server to The Kafka server to connect to. This
connect to> is required for describing and
altering broker configs.
--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.
--delete-config <String> config keys to remove 'k1,k2'
--describe List configs for the given entity.
--entity-default Default entity name for
clients/users/brokers (applies to
corresponding entity type in command
line)
--entity-name <String> Name of entity (topic name/client
id/user principal name/broker id)
--entity-type <String> Type of entity
(topics/clients/users/brokers)
--force Suppress console prompts
--help Print usage information.
--version Display Kafka version.
--zookeeper <String: urls> REQUIRED: The connection string for
the zookeeper connection in the form
host:port. Multiple URLS can be
given to allow fail-over.
网上找了一张图，翻译解释说明：
使用方法（例子）：
- 增加/编辑配置
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type topics –entity-name topicName –add-config ‘k1=v1, k2=v2, k3=v3′
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type brokers –entity-name 1 –add-config ‘retention.bytes=1024072′
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type brokers –entity-default –add-config ‘retention.bytes=1024072′
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type clients –entity-default –add-config ‘retention.bytes=1024072′
- 删除配置
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type topics –entity-name topicName –delete-config ‘k1,k2,k3’
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –alter –entity-type clients –entity-name clientId –delete-config ‘k1,k2,k3’
./kafka-configs.sh –bootstrap-server localhost:9092 –alter –entity-type brokers –entity-name $brokerId –delete-config ‘k1,k2,k3’
./kafka-configs.sh –bootstrap-server localhost:9092 –alter –entity-type brokers –entity-default –delete-config ‘k1,k2,k3’
- 列出配置项的描述信息
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –entity-type topics –entity-name topicName –describe
./kafka-configs.sh–bootstrap-server localhost:9092 –entity-type brokers –entity-name $brokerId –describe
./kafka-configs.sh –bootstrap-server localhost:9092 –entity-type brokers –entity-default –describe
./kafka-configs.sh –zookeeper localhost:2181/kafkacluster –entity-type users –entity-name user1 –entity-type clients –entity-name clientA –describe
