1.
1.1 create four virtual machines and starts:
1.2 centos7 establish a file folder placed inside four sessions, respectively note1, note2, note3 in the shell, Note4
1.3 successfully established
2. Start Configuration
2.1: Modify the host name: hostnamectl set -hostname host name --static (permanent)
reboot: reboot
View hostname: hostname
2.2 firewall turned off
when entering service iptables stop, the following error appears:
then you need to install a iptables-service:
systemctl stop firewalld
systemctl mask firewalld
yum install iptables-services(安装)
systemctl stop iptables（开机关闭）
service iptables save（保存）
2.3: Set up sync button
2.4 zookeeper create folders
2.5 Click xftp6, zookeeper-bin to open the file you want to pass,
2.6 zookeeper Download:
https://mirrors.cloud.tencent.com/apache/zookeeper/zookeeper-3.5.7/
2.7note1, note2, note3, are using this method to upload
2.8: Extract: tar--zxvf the Apache ZooKeeper-3.5.7-bin.tar.gz
2.9 rename:
mv the Apache-3.5.7-bin-ZooKeeper ZooKeeper the Apache- 
delete tar package
entering data, create and enter myid, modify the contents inside
myid to write 0,1,2 respectively. i, modify; esc exit: wq forced to save and exit!
enter zookeeper-the Apache
3. Modify zookeeper profile:
3.1: enter conf`` [root @ note1 apache-zookeeper ] # cd conf / `` `
copy zoo_sample.cfg, to zoo.cfg. [root@note1 conf]# cp zoo_sample.cfg zoo.cfg
Modify the configuration file zoo.cfg. [root@note1 conf]# vim zoo.cfg
zoo.cfg profile:
dataDir = / Data / ZooKeeper / Data
server.0 = Note1: 2888: 3888
server.1 = Note2: 2888: 3888
server.2=note3:2888:3888
# 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=/data/zookeeper/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.0=note1:2888:3888
server.1=note2:2888:3888
server.2=note3:2888:3888
3.2: Start the zookeeper[root@note1 apache-zookeeper]# bin/zkServer.sh start
View status: [root@note1 apache-zookeeper]# bin/zkServer.sh status
JPS start: jps
3.3 (Firefox) to access note1 on the browser: 8080
3.4
complete configuration zookeeper
3.4:
View log vim logs/zookeeper-root-server-note1.out
distribution file:scp -r apache-zookeeper/root@note2$pwd scp -r apache-zookeeper/root@note3$pwd
