linux安装zookeeper教程

以下是Linux安装Zookeeper的教程：

1. 下载Zookeeper

首先，你需要从官方网站下载Zookeeper的二进制文件。你可以在这里找到最新版本的Zookeeper：https://zookeeper.apache.org/releases.html

2. 解压缩Zookeeper

下载完成后，你需要将Zookeeper解压缩到你的Linux系统中。你可以使用以下命令将Zookeeper解压缩到/opt目录下：

tar -zxf zookeeper-3.4.14.tar.gz -C /opt

3. 配置Zookeeper

接下来，你需要配置Zookeeper。你可以在Zookeeper的conf目录下找到一个名为zoo_sample.cfg的示例配置文件。你需要将它复制一份，并将其命名为zoo.cfg：

cd /opt/zookeeper-3.4.14/conf
cp zoo_sample.cfg zoo.cfg

然后，你需要编辑zoo.cfg文件，以便将Zookeeper配置为使用单个节点模式。你可以使用以下命令打开zoo.cfg文件：

vi zoo.cfg

在文件中，你需要找到以下行：

# The number of milliseconds of each tick
tickTime=200

# 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=/tmp/zookeeper

# the port at which the clients will connect
clientPort=2181

你需要将这些行修改为以下内容：

# The number of milliseconds of each tick
tickTime=200

# The number of ticks that the initial
# synchronization phase can take
initLimit=5

# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=2

# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/zookeeper-3.4.14/data

# the directory where the transaction log is stored.
dataLogDir=/opt/zookeeper-3.4.14/logs

# the port at which the clients will connect
clientPort=2181

# disable the per-ip limit on the number of connections since this is a single-node setup
maxClientCnxns=

4. 启动Zookeeper

现在，你可以启动Zookeeper了。你可以使用以下命令启动Zookeeper：

cd /opt/zookeeper-3.4.14/bin
./zkServer.sh start

你可以使用以下命令检查Zookeeper是否已经启动：

./zkServer.sh status

如果一切正常，你应该会看到以下输出：

Mode: standalone

5. 测试Zookeeper

现在，你可以测试Zookeeper是否正常工作了。你可以使用以下命令连接到Zookeeper：

./zkCli.sh -server 127...1:2181

如果一切正常，你应该会看到以下输出：

Connecting to 127...1:2181
Welcome to ZooKeeper!
JLine support is disabled

WATCHER::

WatchedEvent state:SyncConnected type:None path:null
[zk: 127...1:2181(CONNECTED) ]

现在，你可以在Zookeeper中创建一个节点。你可以使用以下命令创建一个名为/test的节点：

create /test mydata

如果一切正常，你应该会看到以下输出：

Created /test

现在，你可以使用以下命令获取/test节点的数据：

get /test

如果一切正常，你应该会看到以下输出：

mydata
cZxid = x
ctime = Thu Jan 01 00:00:00 UTC 197
mZxid = x
mtime = Thu Jan 01 00:00:00 UTC 197
pZxid = x1
cversion = 
dataVersion = 
aclVersion = 
ephemeralOwner = x
dataLength = 6
numChildren = 

恭喜你，你已经成功安装和配置了Zookeeper！