ZooKeeper3.4.6配置

1. 添加环境变量

#ZooKeeper VARIABLES START
export ZOOKEEPER_HOME=/usr/local/zookeeper-3.4.6
export PATH=$PATH:$ZOOKEEPER_HOME/bin
#ZooKeeper VARIABLES END

1. 修改ZooKeeper配置文件

mkdir data
mkdir log
cd conf
cp zoo_sample.cfg zoo.cfg
vi zoo.cfg

# 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-3.4.6/data

# 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=master:2888:3888
server.2=slave1:2888:3888
server.3=slave2:2888:3888

1. 创建 log/，并添加data/myid
   三个节点分别对应

master data/myid    1
slave1  data/myid    2
slave1  data/myid    3

在bin/zkEnv.sh开头添加，配置日志文件输出目录：
ZOO_LOG_DIR=/home/jc_admin/zookeeper-3.4.6/log

启动：
zkServer.sh start
zkCli.sh

检查是否启动jps和zkServer.sh status(不准确)
echo ruok | nc 127.0.0.1 2181
得到imok，说明成功