Ubuntu_安装Zookeeper

1. 下载zookeeper，http://archive.apache.org/dist/zookeeper/

2. 解压到: /opt/zookeeper-3.4.6下载

3. 把conf下的zoo_sample.cfg copy一份后重命名为: zoo.cfg.文件中内容如下:
   syncLimit=5
   initLimit=10
   tickTime=2000
   clientPort=2181
   dataDir=/opt/zookeeper-3.4.6/data
   dataLogDir=/opt/zookeeper-3.4.6/logs

4. 新建zookeeper-3.4.6下的data,log目录,然后
   chmod u+x /opt/zookeeper-3.4.6/bin/*

5. 新建shell脚本startZookeeper.sh在/opt/shell文件夹下，

   内容：
   #!/bin/sh
   #to start zookeeper
   #set environment
   export ZOOKEEPER_INSTALL=/opt/zookeeper-3.4.6
   export PATH=$PATH:$ZOOKEEPER_INSTALL/bin
   PID_FILE=$ZOOKEEPER_INSTALL/data/zookeeper_server.pid
   FLAG=$1

   if [ "$FLAG" = "os_start" ] && [ -f "$PID_FILE" ]
   then

          rm $PID_FILE

   fi

   chmod u+x /opt/shell/startZookeeper.sh

   #start zookeeper
   $ZOOKEEPER_INSTALL/bin/zkServer.sh start

6. 设置zookeeper开机启动
   vim /etc/rc.local
   在最后一行添加如下两句话
   #start zookeeper
   /opt/shell/startZookeeper.sh