hadoop安装zookeeper-3.4.12

在安装hbase的时候,需要安装zookeeper,当然也可以用hbase自己管理的zookeeper,在这里我们独立安装zookeeper-3.4.12。

下载地址:https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.4.12/

zookeeper-3.4.12.tar.gz 上传到主节点上的目录下:/home/hadoop

解压tar -xvf zookeeper-3.4.12.tar.gz

重命名:mv zookeeper-3.4.12/ zookeeper

创建在主目录zookeeper下创建data和logs两个目录用于存储数据和日志:

[hadoop@master zookeeper]$ mkdir data
[hadoop@master zookeeper]$ mkdir logs

修改配置文件:

cp  zoo_sample.cfg   zoo.cfg

vi zoo.cfg     #修改内容已经用红色字体标出

[hadoop@master conf]$ more 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=/home/hadoop/zookeeper/data
dataLogDir=/home/hadoop/zookeeper/logs
# 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=saver1:2888:3888
server.3=saver2:2888:3888

配置文件简单说明

============ zookeeper配置文件说明 ============
在ZooKeeper的设计中,集群中所有机器上zoo.cfg文件的内容都应该是一致的。

tickTime: 服务器与客户端之间交互的基本时间单元(ms)
initLimit : 此配置表示允许follower连接并同步到leader的初始化时间,它以tickTime的倍数来表示。当超过设置倍数的tickTime时间,则连接失败。
syncLimit : Leader服务器与follower服务器之间信息同步允许的最大时间间隔,如果超过次间隔,默认follower服务器与leader服务器之间断开链接。
dataDir: 保存zookeeper数据路径
dataLogDir:保存zookeeper日志路径,当此配置不存在时默认路径与dataDir一致

clientPort(2181) : 客户端与zookeeper相互交互的端口

server.id=host:port:port
 id代表这是第几号服务器
 在服务器的data(dataDir参数所指定的目录)下创建一个文件名为myid的文件,
 这个文件的内容只有一行,指定的是自身的id值。比如,服务器“1”应该在myid文件中写入“1”。
 这个id必须在集群环境中服务器标识中是唯一的,且大小在1~255之间。
 host代表服务器的IP地址
 第一个端口号(2888)是follower服务器与集群中的“领导者”leader机器交换信息的端口
 第二个端口号(3888)是当领导者失效后,用来执行选举leader时服务器相互通信的端口

maxClientCnxns : 限制连接到zookeeper服务器客户端的数量

 

修改/etc/profile

export ZOOKEEPER_HOME=/home/hadoop/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin:$ZOOKEEPER_HOME/conf

使配置文件生效:

source /etc/profile

在master机器上:/home/hadoop/zookeeper/data目录下创建一个文件:myid 

[hadoop@master data]$ more myid
1

在saver1机器上创建myid文件

[hadoop@master data]$ more myid
2

在saver2机器上创建myid文件

[hadoop@master data]$ more myid
3

以上三个mydi文件内容和zoo.cfg  最后的server.后对应着

然后在三台服务器上都启用

zkServer.sh start

 

[hadoop@master ~]$ zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/hadoop/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

 

可以观察到:

master

[hadoop@master ~]$ jps
17888 NameNode
18022 DataNode
18454 NodeManager
18807 Jps
18345 ResourceManager
18782 QuorumPeerMain
18191 SecondaryNameNode
[hadoop@master ~]$
[hadoop@master ~]$ zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/hadoop/zookeeper/bin/../conf/zoo.cfg
Mode: followe

saver1

[hadoop@saver1 ~]$ jps
9010 Jps
8979 QuorumPeerMain
8727 DataNode
8839 NodeManager
[hadoop@saver1 ~]$ 
[hadoop@saver1 ~]$ zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/hadoop/zookeeper/bin/../conf/zoo.cfg
Mode: leade

saver2

[hadoop@saver2 ~]$ jps
8738 NodeManager
8626 DataNode
8903 Jps
8878 QuorumPeerMain
[hadoop@saver2 ~]$
[hadoop@saver2 ~]$ zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/hadoop/zookeeper/bin/../conf/zoo.cfg
Mode: followe

然后启动Hbase

[hadoop@master ~]$ start-hbase.sh
running master, logging to /home/hadoop/hbase/logs/hbase-hadoop-master-master.out
saver1: running regionserver, logging to /home/hadoop/hbase/bin/../logs/hbase-hadoop-regionserver-saver1.out
saver2: running regionserver, logging to /home/hadoop/hbase/bin/../logs/hbase-hadoop-regionserver-saver2.out
[hadoop@master ~]$ jps
19168 Jps
17888 NameNode
18022 DataNode
18454 NodeManager
18983 HMaster
18345 ResourceManager
18782 QuorumPeerMain
18191 SecondaryNameNode

 

 

启动和停止

zkServer.sh start
zkServer.sh stop
zkServer.sh restart
zkServer.sh status

 

前台显示:

主节点:

 saver节点

完。

posted @ 2019-01-12 23:40  醉城、  阅读(677)  评论(0编辑  收藏  举报