zookeeper安装一：单机安装
实验环境：
1. centos7.6最小化安装
2. jdk1.8
3. zookeeper-3.4.14
1. 安装jdk环境(略)
2. 下载zookeeper
3. 将下载好的压缩包上传到linux目录 /soft中
4. 解压这个压缩包
[[email protected] soft]# tar -zxvf zookeeper-3.4.14.tar.gz
5. 进入压缩包，拷贝生成新的配置文件
[[email protected] zookeeper-3.4.14]# cp conf/zoo_sample.cfg conf/zoo.cfg
6. 修改配置文件 zoo.cfg配置
将dataDir修改为/soft/zookeeper-3.4.14/dataDir
7. 创建dataDir目录
[[email protected] zookeeper-3.4.14]# mkdir /soft/zookeeper-3.4.14/dataDir
8. 启动Server
[[email protected] zookeeper-3.4.14]# cd /soft/zookeeper-3.4.14/bin[[email protected] bin]# ./zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /soft/zookeeper-3.4.14/bin/…/conf/zoo.cfg
Starting zookeeper … STARTED
9. 启动客户端连接这个Server
[[email protected] bin]# ./zkCli.sh
Connecting to localhost:2181
…
Welcome to ZooKeeper!
…
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0]
看到这里说明成功的连接到了服务端
10. 使用命令行测试zookeeper服务端
10.1 列举出"/"节点下的结构
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
10.2 创建节点"/zkdemo"并绑定数据
[zk: localhost:2181(CONNECTED) 1] create /zkdemo "this is a demo"
Created /zkdemo
10.3 再次列举出"/"节点下的结构
[zk: localhost:2181(CONNECTED) 2] ls /
[zookeeper, zkdemo]
10.4 获取节点"/zkdemo"下绑定的字符串
[zk: localhost:2181(CONNECTED) 3] get /zkdemo
this is a demo
cZxid = 0x2
ctime = Tue May 21 23:17:38 CST 2019
mZxid = 0x2
mtime = Tue May 21 23:17:38 CST 2019
pZxid = 0x2
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 14
numChildren = 0
10.5 修改节点"/zkdemo"下绑定的字符串
[zk: localhost:2181(CONNECTED) 4] set /zkdemo "another"
cZxid = 0x2
ctime = Tue May 21 23:17:38 CST 2019
mZxid = 0x3
mtime = Tue May 21 23:21:43 CST 2019
pZxid = 0x2
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
10.6 再次获取节点"/zkdemo"下的绑定字符串
[zk: localhost:2181(CONNECTED) 5] get /zkdemo
another
cZxid = 0x2
ctime = Tue May 21 23:17:38 CST 2019
mZxid = 0x3
mtime = Tue May 21 23:21:43 CST 2019
pZxid = 0x2
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
10.7 删除节点"/zkdemo"
[zk: localhost:2181(CONNECTED) 6] delete /zkdemo[zk: localhost:2181(CONNECTED) 7] ls /
[zookeeper]
10.8 退出客户端
[zk: localhost:2181(CONNECTED) 8] quit
Quitting…
2019-05-21 23:27:21,823 [myid:] - INFO [main:[email protected]] - Session: 0x1000025f0f80000 closed
2019-05-21 23:27:21,829 [myid:] - INFO [main-EventThread:[email protected]] - EventThread shut down for session: 0x1000025f0f80000
11 关闭Server端
[[email protected] bin]# ./zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /soft/zookeeper-3.4.14/bin/…/conf/zoo.cfg
Stopping zookeeper … STOPPED
其他：上面启动zkServer是后台执行的方式,如果想前台启动的话使用命令：[[email protected] bin]# ./zkServer.sh start-foreground