Kafka自我学习2-Zookeeper cluster

Test enviroment : zoo1, zoo2, zoo3 cluster

1. Install zookeeper, package in kafka

[root@zoo1 ~]# pwd
/root
[root@zoo1 ~]# ls -l kafka_2.-1.1..tgz
-rw-r--r--.  root root  Mar  : kafka_2.-1.1..tgz
[root@zoo2 ~]# pwd
/root
[root@zoo2 ~]# scp 192.168.1.51:/root/kafka_2.-1.1..tgz .
[root@zoo2 ~]# tar -xvf kafka_2.-1.1..tgz
[root@zoo2 ~]# mv kafka_2.-1.1. kafka
[root@zoo2 ~]# yum -y install java-1.8.-openjdk.x86_64

2.Configure hosts files

[root@zoo2 ~]#  vim /etc/hosts
192.168.1.51    zoo1
192.168.1.52    zoo2
192.168.1.53    zoo3

3.Create uniq myid

[root@zoo2 ~]#  vim /tmp/zookeeper/myid

4.Update zookeeper configuration files

[root@zoo2 ~]#  vim /root/kafka/config/zookeeper.properties
dataDir=/tmp/zookeeper
clientPort=
maxClientCnxns=
tickTime=
initLimit=
syncLimit=
server.=zoo1::
server.=zoo2::
server.=zoo3::

5.Start zookeeper services on zoo1, zoo2, zoo3

[root@zoo2 ~]#  systemctl stop firewalld
[root@zoo2 ~]#  systemctl disable firewalld
[root@zoo2 ~]#  /root/kafka/bin/zookeeper-server-start.sh /root/kafka/config/zookeeper.properties 

6.Check Zookeeper running status

[root@zoo1 zookeeper]# ss -a -t |grep 192.168.1.51
ESTAB                    ::ffff:192.168.1.51:ciphire-serv           ::ffff:192.168.1.52:
ESTAB                    ::ffff:192.168.1.51:ciphire-serv           ::ffff:192.168.1.53:
ESTAB                    ::ffff:192.168.1.51:spcsdlobby             ::ffff:192.168.1.53:
ESTAB                    ::ffff:192.168.1.51:spcsdlobby             ::ffff:192.168.1.52:
[root@zoo1 zookeeper]# cat /etc/services |grep ciphire-ser
ciphire-serv    /tcp                # Ciphire Services
ciphire-serv    /udp                # Ciphire Services
[root@zoo1 zookeeper]# cat /etc/services |grep spcsd
spcsdlobby      /tcp                # SPCSDLOBBY
spcsdlobby      /udp                # SPCSDLOBBY

7.Repeat steps1-6 on zoo1, zoo2,zoo3

8.Check zookeeper cluster status by telnet server 2181 port

[root@zoo1 zookeeper]# telnet 192.168.1.51
Trying 192.168.1.51...
Connected to 192.168.1.51.
Escape character is '^]'.
conf
clientPort=
dataDir=/tmp/zookeeper/version-
dataLogDir=/tmp/zookeeper/version-
tickTime=
maxClientCnxns=
minSessionTimeout=
maxSessionTimeout=
serverId=
initLimit=
syncLimit=
electionAlg=
electionPort=
quorumPort=
peerType=
Connection closed by foreign host.
[root@zoo1 zookeeper]# telnet 192.168.1.52
Trying 192.168.1.52...
Connected to 192.168.1.52.
Escape character is '^]'.
conf
clientPort=
dataDir=/tmp/zookeeper/version-
dataLogDir=/tmp/zookeeper/version-
tickTime=
maxClientCnxns=
minSessionTimeout=
maxSessionTimeout=
serverId=
initLimit=
syncLimit=
electionAlg=
electionPort=
quorumPort=
peerType=
Connection closed by foreign host.
[root@zoo1 zookeeper]# telnet 192.168.1.53
Trying 192.168.1.53...
Connected to 192.168.1.53.
Escape character is '^]'.
conf
clientPort=
dataDir=/tmp/zookeeper/version-
dataLogDir=/tmp/zookeeper/version-
tickTime=
maxClientCnxns=
minSessionTimeout=
maxSessionTimeout=
serverId=
initLimit=
syncLimit=
electionAlg=
electionPort=
quorumPort=
peerType=
Connection closed by foreign host.

1 leader, 2 follower by default

[root@zoo1 zookeeper]# telnet 192.168.1.51
Trying 192.168.1.51...
Connected to 192.168.1.51.
Escape character is '^]'.
srvr
Zookeeper version: 3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
Latency min/avg/max: //
Received:
Sent:
Connections:
Outstanding:
Zxid: 0x100000000
Mode: leader
Node count:
Connection closed by foreign host.
[root@zoo1 zookeeper]# telnet 192.168.1.52
Trying 192.168.1.52...
Connected to 192.168.1.52.
Escape character is '^]'.
srvr
Zookeeper version: 3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
Latency min/avg/max: //
Received:
Sent:
Connections:
Outstanding:
Zxid: 0x1e5
Mode: follower
Node count:
Connection closed by foreign host.
[root@zoo1 zookeeper]# telnet 192.168.1.53
Trying 192.168.1.53...
Connected to 192.168.1.53.
Escape character is '^]'.
srvr
Zookeeper version: 3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
Latency min/avg/max: //
Received:
Sent:
Connections:
Outstanding:
Zxid: 0x100000000
Mode: follower
Node count:
Connection closed by foreign host.

Ctrl+c on zoo1, zoo3 change to leader auto(1 leader, 1 follower)

[root@zoo1 zookeeper]# telnet 192.168.1.51
Trying 192.168.1.51...
telnet: connect to address 192.168.1.51: Connection refused
[root@zoo1 zookeeper]# telnet 192.168.1.52
Trying 192.168.1.52...
Connected to 192.168.1.52.
Escape character is '^]'.
srvr
Zookeeper version: 3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
Latency min/avg/max: //
Received:
Sent:
Connections:
Outstanding:
Zxid: 0x100000000
Mode: follower
Node count:
Connection closed by foreign host.
[root@zoo1 zookeeper]# telnet 192.168.1.53
Trying 192.168.1.53...
Connected to 192.168.1.53.
Escape character is '^]'.
srvr
Zookeeper version: 3.4.-39d3a4f269333c922ed3db283be479f9deacaa0f, built on // : GMT
Latency min/avg/max: //
Received:
Sent:
Connections:
Outstanding:
Zxid: 0x200000000
Mode: leader
Node count:
Connection closed by foreign host.

ZooKeeper Commands: The Four Letter Words refer: http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_zkCommands