https://downloads.apache.org/kafka/3.5.1/kafka_2.13-3.5.1.tgz
d
kafka dependencies and zookeeper
kakka configuration file
broker.id=1 #每个 broker 在集群中的唯一标识,正整数。每个节点不一样
listeners=PLAINTEXT://192.168.74.70:9092 ##监听地址
num.network.threads=3 # 定义用于网络处理的线程数。
num.io.threads=8 #定义用于I/O操作的线程数。
socket.send.buffer.bytes=102400 #设置用于发送数据的套接字缓冲区大小。
socket.receive.buffer.bytes=102400 # 设置用于接收数据的套接字缓冲区大小。
socket.request.max.bytes=104857600 #指定单个请求的最大字节数。
log.dirs=/data/kafka #kakfa 用于保存数据的目录,所有的消息都会存储在该目录当中
num.partitions=3#设置创建新的 topic 默认分区数量,一般为集群的节点数
num.recovery.threads.per.data.dir=1 #
offsets.topic.replication.factor=1 #设置偏移量主题的复制因子为1。
transaction.state.log.replication.factor=1 #事务主题的复制因子(设置更高以确保可用性)。 内部主题创建将失败,直到群集大小满足此复制因素要求
transaction.state.log.min.isr=1#覆盖事务主题的min.insync.replicas配置
log.retention.hours=168#设置 kafka 中消息保留时间,
log.retention.check.interval.ms=300000
zookeeper.connect=192.168.74.70:2181,192.168.74.71:2181,192.168.74.72:2181 #设置Zookeeper服务器的连接地址。
zookeeper.connection.timeout.ms=18000 #设置与Zookeeper建立连接的超时时间。
group.initial.rebalance.delay.ms=0 #设置初始重新平衡延迟的毫秒数。
Start
/apps/kafka_2.13-3.5.1/bin/kafka-server-start.sh -daemon /apps/kafka_2.13-3.5.1/config/server.properties
Check the port
netstat -antp|grep 2181
Create topic
/apps/kafka_2.13-3.5.1/bin/kafka-topics.sh --create --topic magedu --bootstrap-server 192.168.74.70:9092 --partitions 3 --replication-factor 2
查看topic
root@ubuntu20:~# /apps/kafka_2.13-3.5.1/bin/kafka-topics.sh --bootstrap-server 192.168.74.70:9092 --list
magedu
Stop kafka
/apps/kafka_2.13-3.5.1/bin/kafka-server-stop.sh
Verify topic
status description: There are three partitions, namely 0, 1, and
2. PartitionCount: 3 represents 3 shards.
ReplicationFactor: 2 represents 2 replicas.
The leader of partition 0 is 1.
Replicas: represents the brokerid stored in the replica
Isr: 1,3 represents the live person is 1,3
root@ubuntu20:~# /apps/kafka_2.13-3.5.1/bin/kafka-topics.sh --describe --bootstrap-server 192.168.74.70:9092
Topic: magedu TopicId: H4nV6WulTU-y_S4J2pHfOA PartitionCount: 3 ReplicationFactor: 2 Configs:
Topic: magedu Partition: 0 Leader: 1 Replicas: 1,3 Isr: 1,3
Topic: magedu Partition: 1 Leader: 1 Replicas: 2,1 Isr: 1
Topic: magedu Partition: 2 Leader: 3 Replicas: 3,2 Isr: 3
There is no 2 in the above Isr. You can know that node 2 is missing. Check and find that kafka of node 2 has not been started. It
is normal after starting.
Topic: magedu TopicId: H4nV6WulTU-y_S4J2pHfOA PartitionCount: 3 ReplicationFactor: 2 Configs:
Topic: magedu Partition: 0 Leader: 1 Replicas: 1,3 Isr: 1,3
Topic: magedu Partition: 1 Leader: 1 Replicas: 2,1 Isr: 1,2
Topic: magedu Partition: 2 Leader: 3 Replicas: 3,2 Isr: 3,2
Specify the topic to view
/apps/kafka_2.13-3.5.1/bin/kafka-topics.sh --describe --bootstrap-server 192.168.74.70:9092 --topic luo
root@ubuntu20:~#ll /data/kafka/
Production data
/apps/kafka_2.13-3.5.1/bin/kafka-console-producer.sh --broker-list 192.168.74.71:9092,192.168.74.70:9092 --topic magedu
Consumption data
/apps/kafka_2.13-3.5.1/bin/kafka-console-consumer.sh --topic magedu --bootstrap-server 192.168.74.71:9092,192.168.74.70:9092 --from-beginning
--from- beginning consume from the beginning
View data through software
Create connection
Add kafka address configuration
Change to string type
Can view data
Summarize
A message is consumed once.
A message is consumed multiple times -> Data synchronization and distribution.
Most times, it is usually consumed once.
Kafka usually runs in a cluster to achieve high availability
topic (topic): logically group and save records (records and logs)
Kafka partition: In order to achieve high data availability, for example, the data of partition 0 is distributed to different kafka nodes. Each partition has one broker as the leader and one broker as the follower.
Sequential read
and write Sequential read
Monitor: Check
whether the port
curl url is 200
activemq
The port is the same as rabbitmq.
Install
wget https://mirrors.tuna.tsinghua.edu.cn/apache/activemq/5.18.2/apache-activemq-5.18.2-bin.tar.gz
cp apache-activemq-5.18.2- bin.tar.gz /apps/
cd /apps/
tar -xf apache-activemq-5.18.2-bin.tar.gz
ln -s apache-activemq-5.18.2 activemq
vi activemq.xml #No need to modify
cd...
./ bin/linux-x86-64/activemq start #Start
netstat -antp|grep 8161 Modify the address to 0.0.0.0
/usr/local/activemq/conf# vi jetty.xml
and visit
http://120.77.146.92:8161/admin/