zookeeper伪集群搭建

1、解压zookeeper

tar -zxvf -C /opt/app/zk1

2、复制到伪集群的另外两个节点

cd /opt/app
cp -R  zk1/zookeeper-3.6.2   ./zk2
cp -R  zk1/zookeeper-3.6.2   ./zk3

3、新建数据存储文件夹

mkdir -p zk1/zookeeper-3.6.2/data
mkdir -p zk2/zookeeper-3.6.2/data
mkdir -p zk3/zookeeper-3.6.2/data

4、修改启动配置文件

vim zk1/zookeeper-3.6.2/conf/zoo_sample.cfg
zk2和zk3同理，修改dataDir、dataLogDir和clientPort
增加(前面的端口是zookeeper服务之间通信的端口。后面的端口是zookeeper与其他应用程序通信的端口。伪分布式需要防止冲突)
server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

  # The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/opt/app/zk1/zookeeper-3.6.2/data   
dataLogDir=/opt/app/zk1/zookeeper-3.6.2/logs
# the port at which the clients will connect
clientPort=2181
server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/opt/app/zk2/zookeeper-3.6.2/data   
dataLogDir=/opt/app/zk2/zookeeper-3.6.2/logs
# the port at which the clients will connect
clientPort=2182
server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/opt/app/zk3/zookeeper-3.6.2/data   
dataLogDir=/opt/app/zk3/zookeeper-3.6.2/logs
# the port at which the clients will connect
clientPort=2183
server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

5、增加在data文件夹下增加myid文件，并添加server的值，按照zoo.cnf的文件配置，myid的内容为1、2、3

echo "1" > /opt/app/zk1/zookeeper-3.6.2/data/myid
echo "2" > /opt/app/zk2/zookeeper-3.6.2/data/myid
echo "3" > /opt/app/zk3/zookeeper-3.6.2/data/myid

6、创建一个启动脚本

/opt/app/zk1/zookeeper-3.6.2/bin/zkServer.sh start /opt/app/zk1/zookeeper-3.6.2/conf/zoo_sample.cfg
/opt/app/zk2/zookeeper-3.6.2/bin/zkServer.sh start /opt/app/zk2/zookeeper-3.6.2/conf/zoo_sample.cfg
/opt/app/zk3/zookeeper-3.6.2/bin/zkServer.sh start /opt/app/zk3/zookeeper-3.6.2/conf/zoo_sample.cfg

/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk1/zookeeper-3.6.2/conf/zoo_sample.cfg
Starting zookeeper ... already running as process 4860.
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk2/zookeeper-3.6.2/conf/zoo_sample.cfg
Starting zookeeper ... STARTED
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk3/zookeeper-3.6.2/conf/zoo_sample.cfg
Starting zookeeper ... STARTED

查看状态的脚本

/opt/app/zk1/zookeeper-3.6.2/bin/zkServer.sh status //opt/app/zk1/zookeeper-3.6.2/conf/zoo_sample.cfg
/opt/app/zk2/zookeeper-3.6.2/bin/zkServer.sh status //opt/app/zk2/zookeeper-3.6.2/conf/zoo_sample.cfg
/opt/app/zk3/zookeeper-3.6.2/bin/zkServer.sh status //opt/app/zk3/zookeeper-3.6.2/conf/zoo_sample.cfg

/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk1/zookeeper-3.6.2/conf/zoo_sample.cfg
Client port found: 2181. Client address: localhost. Client SSL: false.
Mode: follower
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk2/zookeeper-3.6.2/conf/zoo_sample.cfg
Client port found: 2182. Client address: localhost. Client SSL: false.
Mode: leader
/usr/bin/java
ZooKeeper JMX enabled by default
Using config: //opt/app/zk3/zookeeper-3.6.2/conf/zoo_sample.cfg
Client port found: 2183. Client address: localhost. Client SSL: false.
Mode: follower