安装配置请看前文：
Linux系统安装ZooKeeper

开始搭建

cp多个zoo.cfg文件，分别命令为zoo1.cfg、zoo2.cfg、zoo3.cfg

zoo.cfg

#f 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
dataDir=/usr/local/apache-zookeeper-3.6.1/data-cluster/data1
dataLogDir=/usr/local/apache-zookeeper-3.6.1/log-cluster/log1
# the port at which the clients will connect
#
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

zoo2.cfg

#f 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
dataDir=/usr/local/apache-zookeeper-3.6.1/data-cluster/data2
dataLogDir=/usr/local/apache-zookeeper-3.6.1/log-cluster/log2
# the port at which the clients will connect
#
clientPort=2182
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

zoo3.cfg

#f 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
dataDir=/usr/local/apache-zookeeper-3.6.1/data-cluster/data3
dataLogDir=/usr/local/apache-zookeeper-3.6.1/log-cluster/log3
# the port at which the clients will connect
#
clientPort=2183
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1server.1=localhost:2287:3387
server.2=localhost:2288:3388
server.3=localhost:2289:3389

接着创建对应的data和log文件
在zk安装目录下，创建data-cluster文件夹，里面放data1，data2，data3

在zk安装目录下，创建log-cluster文件夹，同上

创建myid

在/usr/local/apache-zookeeper-3.6.1/data-cluster文件夹下有三个data文件，每个data文件夹里都创建myid文件，就叫myid没后缀，然后对应着文件夹的层次写1,2,3；

这里data2我之前多写了个2，写成了22，启动失败了，按理说只要3个myid不一致就可以了，不知道为什么会失败，然后改成2之后，又成功启动了！

到了这里理论上是可以的，注意杀8080端口的进程

开启启动：

./zkServer.sh start/usr/local/apache-zookeeper-3.6.1/conf/zoo1.cfg 

./zkServer.sh start/usr/local/apache-zookeeper-3.6.1/conf/zoo2.cfg 

./zkServer.sh start/usr/local/apache-zookeeper-3.6.1/conf/zoo3.cfg 

查看状态：

./zkServer.sh status /usr/local/apache-zookeeper-3.6.1/conf/zoo1.cfg 

./zkServer.sh status /usr/local/apache-zookeeper-3.6.1/conf/zoo2.cfg 

./zkServer.sh status /usr/local/apache-zookeeper-3.6.1/conf/zoo3.cfg 

Mode: follower，从节点模式

Mode: leader，主节点模式

可能随着后续的拓展，会有补充，欢迎收看，谢谢！

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