centos7.x搭建zookeeper集群

wzh789

　　Zookeeper是Apache Hadoop的子项目，强度相对较好，建议生产环境使用该注册中心。
　　

#安装
wget http://www.apache.org/dist//zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz
tar zxvf zookeeper-3.4.10.tar.gz
cd zookeeper-3.4.10
cp conf/zoo_sample.cfg conf/zoo.cfg#配置
vi conf/zoo.cfg如果不需要集群，zoo.cfg的内容如下：(其中data目录需改成你真实输出目录)
vim zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/dubbo/zookeeper-3.4.10/data
clientPort=2181　　如果需要集群，zoo.cfg的内容如下：(其中data目录和server地址需改成你真实部署机器的信息)
　　vim zoo.cfg

tickTime=2000
initLimit=10
syncLimit=5
dataDir=/home/dubbo/zookeeper-3.4.10/data
clientPort=2181
server.1=10.20.153.10:2555:3555
server.2=10.20.153.11:2555:3555　　并在data目录下放置myid文件：(上面zoo.cfg中的dataDir)
mkdir data
vi myid　　myid指明自己的id，对应上面zoo.cfg中server.后的数字，第一台的内容为1，第二台的内容为2，内容如下：
　　myid
1　　

• 　　启动:
  

./bin/zkServer.sh start　　

• 　　停止:
  

./bin/zkServer.sh stop

• 　　命令行: (See: http://zookeeper.apache.org/doc/r3.4.10/zookeeperAdmin.html)
  
• telnet 127.0.0.1 2181
  dump
  

　　Or:
echo dump | nc 127.0.0.1 2181　　

• 　　用法:
  

dubbo.registry.address=zookeeper://10.20.153.10:2181?backup=10.20.153.11:2181　　Or:
<dubbo:registry protocol=&quot;zookeeper&quot; address=&quot;10.20.153.10:2181,10.20.153.11:2181&quot; />　　

　　脚本：
#!/bin/bash
#chkconfig:2345 90 20
# description:zk auto start ,first start zk ,then start dubbo
# 使用/etc/profile可能会导入systemd函数，所以最好只导入java环境变量即可，这个花了几个小时测试
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el7_4.x86_64
#. /etc/profile
ZK_HOME=/usr/local/zookeeper-3.4.10
case $1 in
      start)  $ZK_HOME/bin/zkServer.sh start;;
      stop) $ZK_HOME/bin/zkServer.sh stop;;
      status) $ZK_HOME/bin/zkServer.sh status;;
      restart) $ZK_HOME/bin/zkServer.sh restart;;
      *) echo &quot;require start/stop/status/restart&quot; ;;
esac#指定zookeeper.out输出目录
vim /usr/local/zookeeper/bin/zkEnv.sh
#!/usr/bin/env bash
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the &quot;License&quot;); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This script should be sourced into other zookeeper
# scripts to setup the env variables
# We use ZOOCFGDIR if defined,
# otherwise we use /etc/zookeeper
# or the conf directory that is
# a sibling of this script's directory
ZOOBINDIR=&quot;${ZOOBINDIR:-/usr/bin}&quot;
ZOOKEEPER_PREFIX=&quot;${ZOOBINDIR}/..&quot;
if [ &quot;x$ZOOCFGDIR&quot; = &quot;x&quot; ]
then
  if [ -e &quot;${ZOOKEEPER_PREFIX}/conf&quot; ]; then
    ZOOCFGDIR=&quot;$ZOOBINDIR/../conf&quot;
  else
    ZOOCFGDIR=&quot;$ZOOBINDIR/../etc/zookeeper&quot;
  fi
fi
if [ -f &quot;${ZOOCFGDIR}/zookeeper-env.sh&quot; ]; then
  . &quot;${ZOOCFGDIR}/zookeeper-env.sh&quot;
fi
if [ &quot;x$ZOOCFG&quot; = &quot;x&quot; ]
then
    ZOOCFG=&quot;zoo.cfg&quot;
fi
ZOOCFG=&quot;$ZOOCFGDIR/$ZOOCFG&quot;
if [ -f &quot;$ZOOCFGDIR/java.env&quot; ]
then
    . &quot;$ZOOCFGDIR/java.env&quot;
fi
if [ &quot;x${ZOO_LOG_DIR}&quot; = &quot;x&quot; ]
then
#把这个修改为下面内容，zookeeper.out日志将生成在下面目录
    ZOO_LOG_DIR=&quot;/usr/local/zookeeper/log&quot;
fi
if [ &quot;x${ZOO_LOG4J_PROP}&quot; = &quot;x&quot; ]
then
    ZOO_LOG4J_PROP=&quot;INFO,CONSOLE&quot;
fi
if [ &quot;$JAVA_HOME&quot; != &quot;&quot; ]; then
  JAVA=&quot;$JAVA_HOME/bin/java&quot;
else
  JAVA=java
fi
#add the zoocfg dir to classpath
CLASSPATH=&quot;$ZOOCFGDIR:$CLASSPATH&quot;
for i in &quot;$ZOOBINDIR&quot;/../src/java/lib/*.jar
do
    CLASSPATH=&quot;$i:$CLASSPATH&quot;
done
#make it work in the binary package
#(use array for LIBPATH to account for spaces within wildcard expansion)
if [ -e &quot;${ZOOKEEPER_PREFIX}&quot;/share/zookeeper/zookeeper-*.jar ]; then
  LIBPATH=(&quot;${ZOOKEEPER_PREFIX}&quot;/share/zookeeper/*.jar)
else
  #release tarball format
  for i in &quot;$ZOOBINDIR&quot;/../zookeeper-*.jar
  do
    CLASSPATH=&quot;$i:$CLASSPATH&quot;
  done
  LIBPATH=(&quot;${ZOOBINDIR}&quot;/../lib/*.jar)
fi
for i in &quot;${LIBPATH[@]}&quot;
do
    CLASSPATH=&quot;$i:$CLASSPATH&quot;
done
#make it work for developers
for d in &quot;$ZOOBINDIR&quot;/../build/lib/*.jar
do
   CLASSPATH=&quot;$d:$CLASSPATH&quot;
done
#make it work for developers
CLASSPATH=&quot;$ZOOBINDIR/../build/classes:$CLASSPATH&quot;
case &quot;`uname`&quot; in
    CYGWIN*) cygwin=true ;;
    *) cygwin=false ;;
esac
if $cygwin
then
    CLASSPATH=`cygpath -wp &quot;$CLASSPATH&quot;`
fi
#echo &quot;CLASSPATH=$CLASSPATH&quot;　　下载连接
　　http://down.51cto.com/data/2332660