Kafka自我学习3-Scalable

1.After created the zookeeper cluster, we found all broker cluster topic can be find in zoo1, zoo2, zoo3.

[root@zoo1 zookeeper]# /root/kafka/bin/kafka-topics.sh  --describe --zookeeper zoo1:2181
Topic:my-replicated-topic    PartitionCount:1    ReplicationFactor:3    Configs:
    Topic: my-replicated-topic    Partition: 0    Leader: 1    Replicas: 2,0,1    Isr: 1
Topic:test    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test    Partition: 0    Leader: 1    Replicas: 1    Isr: 1
Topic:test123    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test123    Partition: 0    Leader: 1    Replicas: 1    Isr: 1
[root@zoo1 zookeeper]# /root/kafka/bin/kafka-topics.sh  --describe --zookeeper zoo2:2181
Topic:my-replicated-topic    PartitionCount:1    ReplicationFactor:3    Configs:
    Topic: my-replicated-topic    Partition: 0    Leader: 1    Replicas: 2,0,1    Isr: 1
Topic:test    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test    Partition: 0    Leader: 1    Replicas: 1    Isr: 1
Topic:test123    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test123    Partition: 0    Leader: 1    Replicas: 1    Isr: 1
[root@zoo1 zookeeper]# /root/kafka/bin/kafka-topics.sh  --describe --zookeeper zoo3:2181
Topic:my-replicated-topic    PartitionCount:1    ReplicationFactor:3    Configs:
    Topic: my-replicated-topic    Partition: 0    Leader: 1    Replicas: 2,0,1    Isr: 1
Topic:test    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test    Partition: 0    Leader: 1    Replicas: 1    Isr: 1
Topic:test123    PartitionCount:1    ReplicationFactor:1    Configs:
    Topic: test123    Partition: 0    Leader: 1    Replicas: 1    Isr: 1

2.Even we shutdown the zoo or any leader of zookeeper cluster, we can see the topic still can be access on other zoo server

3.Zookeeper-shell

[root@zoo1 zookeeper]# /root/kafka/bin/zookeeper-shell.sh zoo1:2181
Connecting to zoo1:2181
Welcome to ZooKeeper!
JLine support is disabled

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
help
ZooKeeper -server host:port cmd args
    stat path [watch]
    set path data [version]
    ls path [watch]
    delquota [-n|-b] path
    ls2 path [watch]
    setAcl path acl
    setquota -n|-b val path
    history 
    redo cmdno
    printwatches on|off
    delete path [version]
    sync path
    listquota path
    rmr path
    get path [watch]
    create [-s] [-e] path data acl
    addauth scheme auth
    quit 
    getAcl path
    close 
    connect host:port

 4.