搭建 Pulsar 集群需要 3 个组件:ZooKeeper 集群、BookKeeper 集群和 broker 集群
		以下部署策略:
		192.168.1.46  (部署BookKeeper,部署broker)
		192.168.1.47  (部署BookKeeper,部署broker)
		192.168.1.48  (部署单个ZK,部署BookKeeper,部署broker)
		前期准备
		1)jdk1.8
		2)在各机器根下创建 data目录,下载apache-pulsar-2.4.2-bin.tar.gz拷到data目录下
		   chmod 777 apache-pulsar-2.4.2-bin.tar.gz
		   tar xvfz apache-pulsar-2.4.2-bin.tar.gz
		一 ZooKeeper 集群
		为了简单一台机器上部署单个ZK使用.
		1) 在data目录下创建 zookeeper和zookeeper/logs目录
		2) 修改 zookeeper.conf 文件
		      dataDir=/data/zookeeper
			  dataLogDir=/data/zookeeper/logs
			  server.3=192.168.1.48:2888:3888
		3)  执行命令 echo 3 > /data/zookeeper/zookeeper/myid
		4)  启动zk
		     /data/apache-pulsar-2.4.2$ PULSAR_EXTRA_OPTS="-Dstats_server_port=8001" bin/pulsar-daemon start zookeeper
				 (注意:因为ZK和broker部署在同一机器启动时要加上PULSAR_EXTRA_OPTS="-Dstats_server_port=8001" 改变端口,否则到后边在冲突)
		5) 初始化集群元数据
		    bin/pulsar initialize-cluster-metadata \
      --cluster pulsar-cluster-zk \
      --zookeeper 192.168.1.48:2181 \
      --configuration-store 192.168.1.48:2181 \
      --web-service-url http://192.168.1.48:8080 \
      --web-service-url-tls https://192.168.1.48:8443 \
      --broker-service-url pulsar://192.168.1.48:6650 \
      --broker-service-url-tls pulsar+ssl://192.168.1.48:6651
				
	 二  BookKeeper 集群
	      1)创建 /data/bookkeeper/目录
	      2)bookkeeper.conf 文件
	         advertisedAddress=HOSTNAMEIP  (根据机器IP填写)
			zkServers=192.168.1.48:2181
			journalDirectory=/data/bookkeeper/journal
			ledgerDirectories=/data/bookkeeper/ledgers
			3 执行初始化元数据命令;若出现提示,输入 Y,继续(只需在一个bookie节点执行一次)
				/data/apache-pulsar-2.4.2$ bin/bookkeeper shell metaformat
			4)启动  data/apache-pulsar-2.4.2$ bin/pulsar-daemon start bookie
			5)另两台机器根据以上操作分别启动
		三部署 broker集群
		    1 修改配置文件broker.conf 
				zookeeperServers=192.168.1.48:2181
				configurationStoreServers=192.168.1.48:2181
				advertisedAddress=HOSTNAME (根据机器IP填写)
				clusterName=pulsar-cluster-zk
			2 启动data/apache-pulsar-2.4.2$ bin/pulsar-daemon start broker
			3 另两台机器根据以上操作分别启动