Zookeeper

Apache ZooKeeper 致力于开发和维护一个开源服务器，该服务器支持高度可靠的分布式协调。

zookeeper

quick start

Download

Download the zookeeper, unzip it.

or

$   wget http://apache.fayea.com/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz

Add Server1

  • Add server1 package
$   cd /Users/houbinbin/it/tools/zookeeper/server1
$   ls

data		logs		zookeeper-3.4.9
  • Add file myid

add file myid in data package, and it’s content is

1
  • Edit zookeeper-3.4.9/conf
$   /Users/houbinbin/it/tools/zookeeper/server1/zookeeper-3.4.9/conf
$   ls
configuration.xsl	log4j.properties	zoo_sample.cfg

$   cp zoo_sample.cfg zoo.cfg
  • Edit the zoo.cfg

add these content

# the data and log dir
dataDir=/Users/houbinbin/it/tools/zookeeper/server1/data
dataLogDir=/Users/houbinbin/it/tools/zookeeper/server1/logs

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

Add server2

如果您想在一台PC上测试群集管理器，可以这样做：

服务器2与服务器1相同。

  • Then, edit zoo.cfg
# the data and log dir
dataDir=/Users/houbinbin/it/tools/zookeeper/server2/data
dataLogDir=/Users/houbinbin/it/tools/zookeeper/server2/logs

# the port at which the clients will connect
clientPort=2182
  • Add file myid

with the content of

2

Start & Stop

  • start
houbinbindeMacBook-Pro:bin houbinbin$ pwd
/Users/houbinbin/it/tools/zookeeper/server1/zookeeper-3.4.9/bin

houbinbindeMacBook-Pro:bin houbinbin$ ls
README.txt	zkCli.cmd	zkEnv.cmd	zkServer.cmd
zkCleanup.sh	zkCli.sh	zkEnv.sh	zkServer.sh

houbinbindeMacBook-Pro:bin houbinbin$ sh zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /Users/houbinbin/it/tools/zookeeper/server1/zookeeper-3.4.9/bin/../conf/zoo.cfg
-n Starting zookeeper ...
STARTED
  • status

If you see the QuorumPeerMain, that’s meaning you are success.

houbinbindeMacBook-Pro:bin houbinbin$ jps
1920 Jps
531
1913 QuorumPeerMain
  • stop
houbinbindeMacBook-Pro:bin houbinbin$ sh zkServer.sh stop
ZooKeeper JMX enabled by default
Using config: /Users/houbinbin/it/tools/zookeeper/server1/zookeeper-3.4.9/bin/../conf/zoo.cfg
-n Stopping zookeeper ...
STOPPED

In Windows

zookeeper 安装 windows环境

一、下载并解压

(win7)

当前解压路径为 D:\Learn\apache\zookeeper\zookeeper-3.4.6\

二、配置

在 conf 文件夹下添加配置文件，如果启动有报错提示cfg文件有错误，可以用 zoo_sample.cfg 内容替代

  • zoo.cfg
# The number of milliseconds of each tick  心跳间隔 毫秒每次
tickTime=2000

# 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 anacknowledgement
syncLimit=5

# the directory where the snapshot isstored.  //镜像数据位置
dataDir=D:\\Learn\\apache\\zookeeper\\data

#日志位置
dataLogDir=D:\\Learn\\apache\\zookeeper\\log

# the port at which the clients willconnect  客户端连接的端口
clientPort=2181

三、运行

[D:\Learn\apache\zookeeper\zookeeper-3.4.6\bin]$ zkServer.cmd
...
  • 另开一个窗口
[D:\Learn\apache\zookeeper\zookeeper-3.4.6\bin]$ jps
5200 RemoteJdbcServer
12068 RemoteMavenServer
11416 
13928 
9784 Jps
13036 QuorumPeerMain
6412 RemoteJdbcServer
  • 启动客户端
[D:\Learn\apache\zookeeper\zookeeper-3.4.6\bin]$ zkCli.cmd -server 127.0.0.1:2181
...

windows10 安装笔记

下载

从 https://zookeeper.apache.org/releases.html 选择你需要的版本。

我下载的是 https://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz

这里有一个坑，一定要下载 bin.tar.gz 的，否则会报错找不到执行类。

解压

我把压缩文件直接解压到下面的路径：

D:\tool\zookeeper\apache-zookeeper-3.6.2-bin

配置

到 D:\tool\zookeeper\apache-zookeeper-3.6.2-bin\conf 路径下，复制 zoo_sample.cfg 为 zoo.cfg，内容如下：

# The number of milliseconds of each tick  心跳间隔 毫秒每次
tickTime=2000
# 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.
# 指定了日志和数据的路径
dataDir=D:\\tool\\zookeeper\\data
dataLogDir=D:\\tool\\zookeeper\\log

# the port at which the clients will connect  客户端连接的端口
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

## Metrics Providers
#
# https://prometheus.io Metrics Exporter
#metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
#metricsProvider.httpPort=7000
#metricsProvider.exportJvmInfo=true

大部分配置保持原样即可，我们新增了数据和日志的路径，如下:

dataDir=D:\\tool\\zookeeper\\data
dataLogDir=D:\\tool\\zookeeper\\log

启动

到 D:\tool\zookeeper\apache-zookeeper-3.6.2-bin\bin 路径下，执行命令：

zkServer.cmd

查看

λ jps
6736
9360 QuorumPeerMain
13012 Jps
8828 RemoteMavenServer36

QuorumPeerMain 就是 zk 对应的类

参考资料

zookeeper-3.5.5安装报错：找不到或无法加载主类 org.apache.zookeeper.server.quorum.QuorumPeerMain-新版本zookeeper易犯错误