文档：https://zookeeper.apache.org/doc/r3.5.5/zookeeperStarted.html
Zookeeper单机模式安装
1、下载解压
https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.5.5/
$ wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.5.5/apache-zookeeper-3.5.5-bin.tar.gz $ tar -zxvf apache-zookeeper-3.5.5-bin.tar.gz
2、修改配置
$ cd apache-zookeeper-3.5.5-bin
$ cp conf/zoo_sample.cfg conf/zoo.cfg
$ mkdir data
$ cat conf/zoo.cfg |grep -v "^#"
tickTime=2000
initLimit=10
syncLimit=5
dataDir=apache-zookeeper-3.5.5/data
clientPort=2181
3、配置环境变量
$ vim ~/.bash_profile
export ZOO_HOME=apache-zookeeper-3.5.5-bin
export PATH=$PATH:$ZOO_HOME/bin
$ source ~/.bash_profile</span></span></pre></div></div></div><p style="font-size:14px;color:rgb( 38 , 38 , 38 );line-height:1.74;letter-spacing:0.05em;outline-style:none;margin:0px"><span class="lake-fontsize-12" style="color:rgb( 77 , 77 , 77 );font-size:16px">4、启动zookeeper服务</span></p><div class="lake-card-margin"><div class="lake-codeblock-content" style="border:1px solid rgb( 232 , 232 , 232 );max-width:750px;color:rgba( 0 , 0 , 0 , 0.65 );margin:0px;padding:0px;background:rgb( 249 , 249 , 249 )"><div class="CodeMirror-sizer" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:16px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><pre class="cm-s-default" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><span class="lake-preview-line" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color:rgb( 191 , 191 , 191 );margin:0px 8px 0px 0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"></span><span class="lake-preview-codeblock-content" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )">$ zkServer.sh start
# 查看状态/停止
$ zkServer.sh status/stop</span></span></pre></div></div></div><p style="font-size:14px;color:rgb( 38 , 38 , 38 );line-height:1.74;letter-spacing:0.05em;outline-style:none;margin:0px"><span class="lake-fontsize-12" style="color:rgb( 77 , 77 , 77 );font-size:16px">5、zookeeper客户端</span></p><div class="lake-card-margin"><div class="lake-codeblock-content" style="border:1px solid rgb( 232 , 232 , 232 );max-width:750px;color:rgba( 0 , 0 , 0 , 0.65 );margin:0px;padding:0px;background:rgb( 249 , 249 , 249 )"><div class="CodeMirror-sizer" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:16px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><pre class="cm-s-default" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><span class="lake-preview-line" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"><span class="lake-preview-line-number lake-lm-pad-level-0" style="color:rgb( 191 , 191 , 191 );margin:0px 8px 0px 0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )"></span><span class="lake-preview-codeblock-content" style="color:rgb( 89 , 89 , 89 );margin:0px;padding:0px;background:none 0% 0% / auto repeat scroll padding-box border-box rgba( 0 , 0 , 0 , 0 )">$ zkCli.sh
6、基本使用
> ls / # 查看
> create /key value # 创建
> get /key # 获取
> set /key value # 更新
> delete /key # 删除
Zookeeper集群模式安装
1、下载解压（同单机模式）
2、配置3份文件
只需修改dataDir和clientPort不同即可
$ touch conf/zoo-{1..3}.cfg
$ cat conf/zoo-1.cfg |grep -v "^#"
tickTime=2000
initLimit=10
syncLimit=5
dataDir=data-1
clientPort=2181
server.1=127.0.0.1:2888:3888
server.2=127.0.0.1:2889:3889
server.3=127.0.0.1:2890:3890
$ cat conf/zoo-2.cfg |grep -v "^#"
tickTime=2000
initLimit=10
syncLimit=5
dataDir=data-2
clientPort=2182
server.1=127.0.0.1:2888:3888
server.2=127.0.0.1:2889:3889
server.3=127.0.0.1:2890:3890
$ cat conf/zoo-3.cfg |grep -v "^#"
tickTime=2000
initLimit=10
syncLimit=5
dataDir=data-3
clientPort=2183
server.1=127.0.0.1:2888:3888
server.2=127.0.0.1:2889:3889
server.3=127.0.0.1:2890:3890
重要参数说明
dataDir：Zookeeper 保存数据的目录
clientPort：客户端连接 Zookeeper 服务器的端口
server.A=B：C：D：其中
-A 是一个数字，表示这个是第几号服务器；
-B 是这个服务器的 ip 地址；
-C 这个服务器与集群中的 Leader 服务器交换信息的端口；
-D Leader选举时服务器相互通信的端口
3、标识Server ID
myid和服务器server.id要匹配
$ mkdir data-{1..3}
$ echo 1 > data-1/myid
$ echo 2 > data-2/myid
$ echo 3 > data-3/myid
4、启动服务
zkServer.sh start conf/zoo-1.cfg
zkServer.sh start conf/zoo-2.cfg
zkServer.sh start conf/zoo-3.cfg
5、客户端连接服务端
zkCli.sh -server 127.0.0.1:2181,127.0.0.1:2182,127.0.0.1:2183
报错及解决：
Starting zookeeper ... FAILED TO START
查看log下面的日志
错误: 找不到或无法加载主类 org.apache.zookeeper.server.quorum.QuorumPeerMain
查看下载包，发现有两个，要下载大的那个
https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.5.5/
参考
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