安装

docker单机安装

下载镜像

# 默认拉取最新的版本，如要指定版本 zookeeeper:版本号
docker pull zookeeper

创建并运行容器

docker run --name zookeeper -e JAMFLAGS="-Xmx256m" -v /mysoft/zookeeper/data/:/data/ -d -p 2181:2181 --privileged zookeeper

使用zk客户端创建节点

# 进入容器
docker exec -it acf2ec660c0e /bin/bash
# 开启zk客户端
bin/zkCli.sh
# 创建一个节点
create /app2 app2

使用可视化工具ZooInspector 观察结果

下载ZooInspector .并解压后运行zookeeper-dev-ZooInspector.jar

连接并设置参数即可。

docker集群版（一）

创建网络环境，并运行容器

# 创建一个桥接网络 用于zookeeper集群通信。
docker network create --driver bridge  zoonet
# 创建三个容器，在一个桥接网络下，并分别映射到主机的不同端口，同时配置hostname不同，zoo的my_id不同，并根据hostname组建集群。
docker run -d -p 2181:2181 --name zookeepernode1 --hostname zoo1 --privileged --network zoonet \
-e ZOO_MY_ID=1 \
-e JAMFLAGS="-Xmx256m" \
-e "ZOO_SERVERS=server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181" zookeeper

docker run -d -p 2182:2181 --name zookeepernode2 --hostname zoo2 --privileged --network zoonet \
-e ZOO_MY_ID=2 \
-e JAMFLAGS="-Xmx256m" \
-e "ZOO_SERVERS=server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181" zookeeper

docker run -d -p 2183:2181 --name zookeepernode3 --hostname zoo3 --privileged --network zoonet \
-e ZOO_MY_ID=3 \
-e JAMFLAGS="-Xmx256m" \
-e "ZOO_SERVERS=server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181" zookeeper

查看各服务状态

#进入容器
docker exec -it 容器id /bin/bash
# 查看服务状态
bin/zkServer.sh status

使用ZooInspector 观察结果

docker集群版（二）

便于管理

编写compose文件

version: '3.1'

services:
  zoo1:
    image: zookeeper
    restart: always
    privileged: true
    hostname: zoo1
    ports:
      - 2181:2181
    volumes: # 挂载数据
      - /usr/local/zookeeper-cluster/node4/data:/data
      - /usr/local/zookeeper-cluster/node4/datalog:/datalog
    environment:
      ZOO_MY_ID: 4
      ZOO_SERVERS: server.4=0.0.0.0:2888:3888;2181 server.5=zoo2:2888:3888;2181 server.6=zoo3:2888:3888;2181
    networks:
      default:
        ipv4_address: 172.18.0.14

  zoo2:
    image: zookeeper
    restart: always
    privileged: true
    hostname: zoo2
    ports:
      - 2182:2181
    volumes: # 挂载数据
      - /usr/local/zookeeper-cluster/node5/data:/data
      - /usr/local/zookeeper-cluster/node5/datalog:/datalog
    environment:
      ZOO_MY_ID: 5
      ZOO_SERVERS: server.4=zoo1:2888:3888;2181 server.5=0.0.0.0:2888:3888;2181 server.6=zoo3:2888:3888;2181
    networks:
      default:
        ipv4_address: 172.18.0.15

  zoo3:
    image: zookeeper
    restart: always
    privileged: true
    hostname: zoo3
    ports:
      - 2183:2181
    volumes: # 挂载数据
      - /usr/local/zookeeper-cluster/node6/data:/data
      - /usr/local/zookeeper-cluster/node6/datalog:/datalog
    environment:
      ZOO_MY_ID: 6
      ZOO_SERVERS: server.4=zoo1:2888:3888;2181 server.5=zoo2:2888:3888;2181 server.6=0.0.0.0:2888:3888;2181
    networks:
      default:
        ipv4_address: 172.18.0.16

networks: # 自定义网络
  default:
    external:
      name: zoonet2

执行compose文件

docker-compose -f docker-compose.yml up -d

**停止zookeeper集群 **

docker-compose stop

**删除zookeeper集群 **

docker-compose rm

实体机安装zookeeper

下载zookeeper

从apache官网目录选择自己想要的版本，下载-bin.tar.gz包

有bin名称的包里面有编译后的二进制的包，而之前的普通的tar.gz的包里面是只是源码的包无法直接使用。

解压zookeeper并配置文件

# 解压
tar -zxf zookeeper-xxx-bin.tar.gz -C <dir>
# 复制一份配置文件
cp zoo-simple.cfg zoo.cfg

配置文件

# The number of milliseconds of each tick
# 与其他服务间的通信时间，作为单位
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
# 首次leader与follow连接时，允许等待initLimit*tickTime的时间。即10个tickTime的等待时长。
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
# 同步等待时常5个tickTime。
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
# 文件存储目录
dataDir=/data/zookeeper/single-3.7.0
# the port at which the clients will connect
# 客户端连接使用的端口号
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
# 当前客户端允许的最大连接数
#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

创建需要的目录

# -p 创建多级目录 此目录为zookeeper文件存储目录
mkdir -p /data/zookeeper/single3.7.0

启动服务

/opt/zookeeper/single-3.7.0/bin/zkServer.sh --config /opt/zookeeper/single-3.7.0/conf start
结果显示：
    ZooKeeper JMX enabled by default
    Using config: /opt/zookeeper/single-3.7.0/conf/zoo.cfg
    Starting zookeeper ... STARTED

停止服务

/opt/zookeeper/single-3.7.0/bin/zkServer.sh --config /opt/zookeeper/single-3.7.0/conf stop
结果显示：
    ZooKeeper JMX enabled by default
    Using config: /opt/zookeeper/single-3.7.0/conf/zoo.cfg
    Stopping zookeeper ... STOPPED

安装zookeeper集群

以四台为例

与单台安装步骤差不多。

解压zookeeper并配置文件

# 解压
tar -zxf zookeeper-xxx-bin.tar.gz -C <dir>
# 复制一份配置文件
cp zoo-simple.cfg zoo.cfg

在zoo.cfg中加入集群节点配置信息

# 集群节点列表，2888为连接通信用端口，3888为投票选举用端口
server.1=node01:2888:3888
server.2=node02:2888:3888
server.3=node03:2888:3888
server.4=node04:2888:3888

设置各个节点编号,以node1为例

mkdir -p /data/zookeeper/zk
echo 1 > /data/zookeeper/zk/myid

启动服务

# 分别在四台机子上执行
zkServer.sh start

查看节点主从

zkServer.sh status

启动客户端验证

zkCli.sh 

查看帮助命令

help

ZooKeeper -server host:port -client-configuration properties-file cmd args
    addWatch [-m mode] path # optional mode is one of [PERSISTENT, PERSISTENT_RECURSIVE] - default is PERSISTENT_RECURSIVE
    addauth scheme auth
    close 
    config [-c] [-w] [-s]
    connect host:port
    create [-s] [-e] [-c] [-t ttl] path [data] [acl]
    delete [-v version] path
    deleteall path [-b batch size]
    delquota [-n|-b|-N|-B] path
    get [-s] [-w] path
    getAcl [-s] path
    getAllChildrenNumber path
    getEphemerals path
    history 
    listquota path
    ls [-s] [-w] [-R] path
    printwatches on|off
    quit 
    reconfig [-s] [-v version] [[-file path] | [-members serverID=host:port1:port2;port3[,...]*]] | [-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*]
    redo cmdno
    removewatches path [-c|-d|-a] [-l]
    set [-s] [-v version] path data
    setAcl [-s] [-v version] [-R] path acl
    setquota -n|-b|-N|-B val path
    stat [-w] path
    sync path
    version 
    whoami