zookeeper 安裝模式有三種：單機模式：單機單 server；集群模式：多機多 server，形成集群；偽集群模式：單機多 server，形成偽集群。

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本篇內容包括：Zookeeper 官網下載、Zookeeper 單機模式部署、Zookeeper 集群安裝、Zookeeper 集群安裝

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一、Zookeeper 官網下載

進入官網下載 Zookeeper，這里我們使用的版本為 Zookeeper-3.5.7

Zookeeper 官網地址： http://zookeeper.apache.org/

zookeeper 安裝模式有三種：單機模式：單機單 server；集群模式：多機多 server，形成集群；偽集群模式：單機多 server，形成偽集群。

二、Zookeeper 單機模式部署

1、安裝 JDK

# 安裝JDK

可以參照：Java基礎：Java程序設計環境

2、安裝 Zookeeper

# 官網下載

# 拷貝 apache-zookeeper-3.5.7-bin.tar.gz 到 Linux系統下

# 解壓到指定目錄：

tar -zxvf apache-zookeeper-3.5.7-bin.tar.gz -C /opt/module/

# 改名

mv apache-zookeeper-3.5.7-bin zookeeper-3.5.7

3、修改 Zookpeeper 配置

# 進入conf目錄

# mv zoo_sample.cfg zoo.cfg

# mkdir /opt/module/zookeeper-3.5.7/zkData

# vi zoo.cfg

# The number of milliseconds of each tick
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.
dataDir=/opt/module/zookeeper-3.5.7/zkData
# the port at which the clients will connect
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

4、運行 Zookeeper

# 啟動Zookeeper：bin/zkServer.sh start

# 查看進程：jps

# 客戶端訪問：bin/zkCli.sh

三、Zookeeper 集群安裝

1、安裝JDK（每一臺服務器）；

# 安裝JDK

可以參照：Java基礎：Java程序設計環境

2、安裝 Zookeeper

# 拷貝 apache-zookeeper-3.5.7-bin.tar.gz 到 Linux系統下（每一臺服務器）

# 解壓到指定目錄（每一臺服務器）：

tar -zxvf apache-zookeeper-3.5.7-bin.tar.gz -C /opt/module/

# 改名（每一臺服務器）

mv apache-zookeeper-3.5.7-bin zookeeper-3.5.7

3、修改 Zookpeeper 配置

# 進入conf目錄（每一臺服務器）

# mv zoo_sample.cfg zoo.cfg（每一臺服務器）

# mkdir /opt/module/zookeeper-3.5.7/zkData（每一臺服務器）

# vi /opt/module/zookeeper-3.5.7/zkData/myid，填寫每天服務器對應的 ID

# vi zoo.cfg（每一臺服務器）

# The number of milliseconds of each tick
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.
dataDir=/opt/module/zookeeper-3.5.7/zkData
# the port at which the clients will connect
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
server.1=master:2888:3888
server.2=slave1:2888:3888
server.3=slave2:2888:3888

4、運行 Zookeeper

# 啟動服務：每臺機器執行：bin/zkServer.sh start

# 查看每個節點狀態：bin/zkServer.sh status

四、Zookeeper 集群啟動停止腳本

#!/bin/bashcase $1 in
"start"){for i in master slave1 slave2doecho ----- zookeeper $i 啟動-----ssh $i "/opt/module/zookeeper-3.5.7/bin/zkServer.sh start"done
}
;;
"stop"){for i in master slave1 slave2doecho ----- zookeeper $i 停止-----ssh $i "/opt/module/zookeeper-3.5.7/bin/zkServer.sh stop"done
}
;;
"status"){for i in master slave1 slave2doecho ----- zookeeper $i 狀態-----ssh $i "/opt/module/zookeeper-3.5.7/bin/zkServer.sh status"done
}
;;
esac