Three-node kafka cluster configuration
Deploy zookeeper
1. Create a data directory
mkdir -p /data/zookeeper
2. Three servers create myid files and write 1 2 3 respectively
echo "1" > /data/zookeeper/myid
echo "2" > /data/zookeeper/myid
echo "3" > /data/zookeeper/myid
3. Configure hosts
vim /etc/hosts
192.168.44.180 node1
192.168.44.182 node2
192.168.44.184 node3
4. Configure the zookeeper configuration file
cp zoo_sample.cfg zoo.cfg
vim zoo.cfg
tickTime=2000
dataDir=/data/zookeeper/
clientPort=2181
initLimit=5
syncLimit=2
server.1=node1:2888:3888
server.2=node2:2888:3888
server.3=node3:2888:3888
5. Start zookeeper
bin/zkServer.sh start
View logs kafka1 kafka2 kafka3 is the host name of the server
tail -200f logs/zookeeper-root-server-kafka1.out
tail -200f logs/zookeeper-root-server-kafka2.out
tail -200f logs/zookeeper-root-server-kafka3.out
6. View zookeeper status
View the first
#依次启动时，第一台会先提示失败，启动第二天成功后，再次查看第一天会提示成功
[root@kafka1 bin]# ./zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.1-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Error contacting service. It is probably not running.
#启动第二天成功后再次查看
[root@kafka1 bin]# ./zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.1-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
Check out the second
[root@kafka2 bin]# ./zkServer.sh status
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.1-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: leader
Check out the third
[root@kafka3 bin]# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /root/apache-zookeeper-3.7.1-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
department kafka
1. Create a data directory
mkdir -p /data/kafka
2. The hosts file has been configured when configuring zookeeper
3. Configure kafka configuration file
server 1
#当前服务在集群的唯一标识
broker.id=0
#当前服务的ip和端口
listeners=PLAINTEXT://192.168.44.180:9092
#数据存储目录
log.dirs=/data/kafka/kafka-logs
#zookeeper地址
zookeeper.connect=node1:2181,node2:2181,node3:2181
server 2
#当前服务在集群的唯一标识
broker.id=1
#当前服务的ip和端口
listeners=PLAINTEXT://192.168.44.182:9092
#数据存储目录
log.dirs=/data/kafka/kafka-logs
#zookeeper地址
zookeeper.connect=node1:2181,node2:2181,node3:2181
server 3
#当前服务在集群的唯一标识
broker.id=2
#当前服务的ip和端口
listeners=PLAINTEXT://192.168.44.184:9092
#数据存储目录
log.dirs=/data/kafka/kafka-logs
#zookeeper地址
zookeeper.connect=node1:2181,node2:2181,node3:2181
4. Start kafka
bin/kafka-server-start.sh -daemon config/server.properties
View kafka command script
cd bin
ll
-rwxr-xr-x 1 root root 1423 2月 1 02:02 connect-distributed.sh
-rwxr-xr-x 1 root root 1396 2月 1 02:02 connect-mirror-maker.sh
-rwxr-xr-x 1 root root 1420 2月 1 02:02 connect-standalone.sh
-rwxr-xr-x 1 root root 861 2月 1 02:02 kafka-acls.sh
-rwxr-xr-x 1 root root 873 2月 1 02:02 kafka-broker-api-versions.sh
-rwxr-xr-x 1 root root 860 2月 1 02:02 kafka-cluster.sh
-rwxr-xr-x 1 root root 864 2月 1 02:02 kafka-configs.sh
-rwxr-xr-x 1 root root 945 2月 1 02:02 kafka-console-consumer.sh
-rwxr-xr-x 1 root root 944 2月 1 02:02 kafka-console-producer.sh
-rwxr-xr-x 1 root root 871 2月 1 02:02 kafka-consumer-groups.sh
-rwxr-xr-x 1 root root 948 2月 1 02:02 kafka-consumer-perf-test.sh
-rwxr-xr-x 1 root root 871 2月 1 02:02 kafka-delegation-tokens.sh
-rwxr-xr-x 1 root root 869 2月 1 02:02 kafka-delete-records.sh
-rwxr-xr-x 1 root root 866 2月 1 02:02 kafka-dump-log.sh
-rwxr-xr-x 1 root root 863 2月 1 02:02 kafka-features.sh
-rwxr-xr-x 1 root root 865 2月 1 02:02 kafka-get-offsets.sh
-rwxr-xr-x 1 root root 870 2月 1 02:02 kafka-leader-election.sh
-rwxr-xr-x 1 root root 863 2月 1 02:02 kafka-log-dirs.sh
-rwxr-xr-x 1 root root 881 2月 1 02:02 kafka-metadata-quorum.sh
-rwxr-xr-x 1 root root 873 2月 1 02:02 kafka-metadata-shell.sh
-rwxr-xr-x 1 root root 862 2月 1 02:02 kafka-mirror-maker.sh
-rwxr-xr-x 1 root root 959 2月 1 02:02 kafka-producer-perf-test.sh
-rwxr-xr-x 1 root root 874 2月 1 02:02 kafka-reassign-partitions.sh
-rwxr-xr-x 1 root root 874 2月 1 02:02 kafka-replica-verification.sh
-rwxr-xr-x 1 root root 10884 2月 1 02:02 kafka-run-class.sh
-rwxr-xr-x 1 root root 1376 2月 1 02:02 kafka-server-start.sh
-rwxr-xr-x 1 root root 1361 2月 1 02:02 kafka-server-stop.sh
-rwxr-xr-x 1 root root 860 2月 1 02:02 kafka-storage.sh
-rwxr-xr-x 1 root root 945 2月 1 02:02 kafka-streams-application-reset.sh
-rwxr-xr-x 1 root root 863 2月 1 02:02 kafka-topics.sh
-rwxr-xr-x 1 root root 879 2月 1 02:02 kafka-transactions.sh
-rwxr-xr-x 1 root root 958 2月 1 02:02 kafka-verifiable-consumer.sh
-rwxr-xr-x 1 root root 958 2月 1 02:02 kafka-verifiable-producer.sh
-rwxr-xr-x 1 root root 1714 2月 1 02:02 trogdor.sh
drwxr-xr-x 2 root root 4096 2月 1 02:02 windows
-rwxr-xr-x 1 root root 867 2月 1 02:02 zookeeper-security-migration.sh
-rwxr-xr-x 1 root root 1393 2月 1 02:02 zookeeper-server-start.sh
-rwxr-xr-x 1 root root 1366 2月 1 02:02 zookeeper-server-stop.sh
-rwxr-xr-x 1 root root 1019 2月 1 02:02 zookeeper-shell.sh
5. Operate topic
#操作topic的脚本
kafka-topics.sh
[root@kafka1 bin]# ./kafka-topics.sh --help
This tool helps to create, delete, describe, or change a topic.
Option Description
------ -----------
--alter Alter the number of partitions,
replica assignment, and/or
configuration for the topic.
--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.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.
--disable-rack-aware Disable rack aware replica assignment
--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.
Operation topic
#创建主题，名字叫做firstTopic ,分区1，副本3
[root@kafka1 bin]# ./kafka-topics.sh --bootstrap-server node1:9092 --topic firstTopic --create --partitions 1 --replication-factor 3
Created topic firstTopic.
#查看全部主题，此处两个是因为多创建了一个
[root@kafka1 bin]# ./kafka-topics.sh --bootstrap-server node1:9092 --list
firstTopic
first_topic
#查看主题详细信息
#topic名字 firstTopic
#PartitionCount: 1 分区数 1
#ReplicationFactor: 3 副本数 3
#Partition: 0 数据在0号分区，分区即把大文件切分成多份
#Leader: 0 数据主备，leader为主，分别存放集群不同服务器上。此处leader存放在broker.id=0的服务器上
#Replicas: 0,2,1 Isr: 0,2,1 副本存放在集群broker.id=0，1，2的主机，Isr显示集群运行正常的节点信息，节点运行不正常时会被从Isr中踢出
[root@kafka1 bin]# ./kafka-topics.sh --bootstrap-server node1:9092 --topic firstTopic --describe
Topic: firstTopic TopicId: HqizKYTWQ06Ed1_IF4B3Jw PartitionCount: 1 ReplicationFactor: 3 Configs:
Topic: firstTopic Partition: 0 Leader: 0 Replicas: 0,2,1 Isr: 0,2,1
#修改主题分区为3，分区数只能增加不能减少
[root@kafka1 bin]# ./kafka-topics.sh --bootstrap-server node1:9092 --topic firstTopic --alter --partitions 3
#再次查看主题详细信息
[root@kafka1 bin]# ./kafka-topics.sh --bootstrap-server node1:9092 --topic firstTopic --describe
Topic: firstTopic TopicId: HqizKYTWQ06Ed1_IF4B3Jw PartitionCount: 3 ReplicationFactor: 3 Configs:
Topic: firstTopic Partition: 0 Leader: 0 Replicas: 0,2,1 Isr: 0,2,1
Topic: firstTopic Partition: 1 Leader: 1 Replicas: 1,2,0 Isr: 1,2,0
Topic: firstTopic Partition: 2 Leader: 2 Replicas: 2,0,1 Isr: 2,0,1
6. Operation Producer
#生产者使用的脚本
kafka-console-producer.sh
[root@kafka1 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.
create producer
bin/kafka-console-producer.sh --bootstrap-server node1:9092 --topic firstTopic
7. Operating consumers
create consumer
bin/kafka-console-consumer.sh --bootstrap-server node1:9092 --topic firstTopic
#消费者默认从最新的数据开始消费，可以指定从头开始消费
bin/kafka-console-consumer.sh --bootstrap-server node1:9092 --topic firstTopic --from-beginning