Centos7 启动Zookeeper 提示缺失:org.apache.zookeeper.server.quorum.QuorumPeerMain

Centos7 搭建Zookeeper集群 一般步骤：

第一步：zookeeper 下载地址
https://www-eu.apache.org/dist/zookeeper/stable/

第二步：解压zookeeper
tar -xzvf zookeeper-3.5.6.tar.gz

第三步：配置zookeeper 全局环境变量
vi /etc/profile

在文件中添加如下内容：
export ZOOKEEPER_HOME=/usr/local/zookeeper/apache-zookeeper-3.5.6
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$ZOOKEEPER_HOME/bin:$PATH

第四步：修改zookeeper 配置文件
cp /usr/local/zookeeper/apache-zookeeper-3.5.6/conf/zoo_sample.cfg /usr/local/zookeeper/apache-zookeeper-3.5.6/conf/zoo.cfg

vi /usr/local/zookeeper/apache-zookeeper-3.5.6/conf/zoo.cfg

编辑内容如下：
# 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=/usr/local/zookeeper/data/data
dataLogDir=/uar/local/zookeeper/data/logs
# 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=1
server.1=elk-server:2888:3888
server.2=node1:2888:3888

相关说明：
dataDir: zookeeper 数据存储地址
dataLogDir: zookeeper 日志文件存储地址

第五步：复制elk-server节点上的zookeeper-3.5.6文件夹至node1 节点上
scp /usr/local/zookeeper/apache-zookeeper-3.5.6 node1:/usr/local/zookeeper/apache-zookeeper-3.5.6

第六步：分别编辑elk-server 和node1 的myid
elk-server 虚拟机：
在dataDir=/usr/local/zookeeper/data/data目录下创建空文件
touch /usr/local/zookeeper/data/data/myid  
echo 1 > /usr/local/zookeeper/data/data/myid  

node1 虚拟机：
在dataDir=/usr/local/zookeeper/data/data目录下创建空文件
touch /usr/local/zookeeper/data/data/myid  
echo 2 > /usr/local/zookeeper/data/data/myid

第七步：zookeeper 日志文件修改
编辑/usr/local/zookeeper/apache-zookeeper-3.5.6/conf/zkEnv.sh 文件
vi /usr/local/zookeeper/apache-zookeeper-3.5.6/conf/zkEnv.sh

修改如下内容：
if [ "x${ZOO_LOG_DIR}" = "x" ]
then
    # 服务运行日志输出路径
    ZOO_LOG_DIR="/uar/local/zookeeper/data/logs"
fi

if [ "x${ZOO_LOG4J_PROP}" = "x" ]
then
    ZOO_LOG4J_PROP="INFO,ROLLINGFILE"
fi

第八步：zookeeper 服务启动和状态
切换至zookeeper 文件夹下的bin 目录
cd /usr/local/zookeeper/apache-zookeeper-3.5.6/bin

启动zookeeper 
./zkServer.sh start

zookeeper 状态信息
./zkServer.sh status

[root@elk-server bin]# ./zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/apache-zookeeper-3.5.6/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[root@elk-server bin]# ./zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /usr/local/zookeeper/apache-zookeeper-3.5.6/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: follower

在启动zookeeper 时，提示如下错误：org.apache.zookeeper.server.quorum.QuorumPeerMain 

解决办法：下载一个zookeeper带bin后缀的文件，因为改文件中包含lib 文件夹，将这个lib 文件夹拷贝至当前zookeeper-3.5.6 的安装目录.

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