Zookeeer stand-alone mode installation and startup process

1. Install JDK
2. Turn off the firewall
   service iptables stop
   chkconfig iptables off
3. Download Zookeeper-Cloud host can only download
   cd /home/software
   wget http://bj-yzjd.ufile.cn-north-02.ucloud.cn/zookeeper-3.4.8.tar.gz
4. Unzip
   tar -xvf zookeeper-3.4.8.tar.gz
5. Enter the subdirectory conf of the Zookeeper installation directory,
   cd zookeeper-3.4.8/conf
6. Copy
   cp zoo_sample.cfg zoo.cfg
7. Edit
   vim zoo.cfg to
   modify the dataDir attribute, for example,
   dataDir=/home/software/zookeeper-3.4.8/tmp
8. Enter Zookeeper's bin directory to start Zookeeper
   cd …/bin
9. Start Zookeeper
   sh zkServer.sh start
   *** After starting Zookeeper, a zookeeper.out file is generated, which is the startup log. If Zookeeper fails to start, check if there is any error message in this file
10. After confirming whether Zookeeper has started successfully
    jps, if QuorumPeerMain appears, it means that Zookeeper has been started, but it does not mean that the startup is successful.
    sh zkServer.sh status Check the startup status of Zookeeper. In stand-alone mode, standalone should appear.