Hbase的伪分布式安装流程步骤

Hbase是一个高可靠性、高性能、面向列、可伸缩、实时读写的分布式数据库。

首先，百度搜索引擎中输入【Apache hbase】，默认第一个就是官网地址，点击进入即可

Hbase安装模式介绍

单机模式

1> Hbase不使用HDFS,仅使用本地文件系统

2> ZooKeeper与Hbase运行在同一个JVM中

分布式模式

– 伪分布式模式

1> 所有进程运行在同一个节点上,不同进程运行在不同的JVM当中

2> 比较适合实验测试

– 完全分布式模式

1> 进程运行在多个服务器集群中

2> 分布式依赖于HDFS系统，因此布署Hbase之前一定要有一个正常工作的HDFS集群

Linux环境准备

关闭防火墙和SELinux

# service iptables stop
# chkconfig iptables off
# vim /etc/sysconfig/selinux
SELINUX=disabled

配置主机名及主机名绑定

# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=hbase
# vim /etc/hosts
192.168.244.30 hbase

SSH免密码登录

# ssh-keygen
一直按Enter键
# ssh-copy-id -i /root/.ssh/id_rsa.pub [email protected]

安装jdk

# tar xvf jdk-7u79-linux-x64.tar.gz -C /usr/local/
# vim /etc/profile

export JAVA_HOME=/usr/local/jdk1.7.0_79
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

# source /etc/profile

Hadoop的安装部署

下载地址：http://hadoop.apache.org/releases.html

在这里，选择2.5.2版本

# wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2.tar.gz
# tar xvf hadoop-2.5.2.tar.gz -C /usr/local/
# cd /usr/local/hadoop-2.5.2/
# vim etc/hadoop/hadoop-env.sh
export JAVA_HOME=/usr/local/jdk1.7.0_79

配置HDFS

# mkdir /usr/local/hadoop-2.5.2/data/
# vim etc/hadoop/core-site.xml
<configuration>
    property>
        name>fs.defaultFS</value>hdfs://192.168.244.30:8020>hadoop.tmp.dir>/usr/local/hadoop-2.5.2/data/tmp>
>
 
# vim etc/hadoop/hdfs-site.xml
>dfs.replication>1>

配置YARN

# mv etc/hadoop/mapred-site.xml.template etc/hadoop/mapred-site.xml
# vim etc/hadoop/mapred-site.xml
>mapreduce.framework.name>yarn>
# vim etc/hadoop/yarn-site.xml
>yarn.nodemanager.aux-services>mapreduce_shuffle>

启动HDFS

初始化文件系统
# bin/hdfs namenode -format
...
16/09/25 20:33:02 INFO common.Storage: Storage directory /tmp/hadoop-root/dfs/name has been successfully formatted.
...

输出上述信息即代表文件系统初始化成功

启动NameNod和Datanode进程

# sbin/start-dfs.sh
16/10/09 19:35:03 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes wh
ere applicableStarting namenodes on [hbase]
The authenticity of host 'hbase (192.168.244.30)' cant be established.
RSA key fingerprint is 1a:12:f5:e3:5d:e1:2c:5c:8c:56:52:ba:42:1c:ac:ba.
Are you sure you want to continue connecting (yes/no)? yes
hbase: Warning: Permanently added hbase' (RSA) to the list of known hosts.
hbase: starting namenode,logging to /usr/local/hadoop-2.5.2/logs/hadoop-root-namenode-hbase.out
The authenticity of host localhost (::1) yes
localhost: Warning: Permanently added localhost (RSA) to the list of known hosts.
localhost: starting datanode,1)">2/logs/hadoop-root-datanode-hbase.
Starting secondary namenodes [0.0.0.0]
The authenticity of host 0.0.0.0 (0.0.0.0) yes
0.0: Warning: Permanently added 0.0.0.0 (RSA) to the list of known hosts.
0.0: starting secondarynamenode,logging to /usr/local/hadoop-2/logs/hadoop-root-secondarynamenode-hbase.out
32 WARN util.NativeCodeLoader: Unable to load native-hadoop library java classes wh
ere applicable

启动YARN

# sbin/start-yarn.sh 
starting yarn daemons
starting resourcemanager,1)">2/logs/yarn-root-resourcemanager-hbase.
localhost: starting nodemanager,1)">2/logs/yarn-root-nodemanager-hbase.out

通过jps查看各进程是否启动成功

# jps
2421 NodeManager
2339 ResourceManager
1924 NameNode
2029 Datanode
2170 SecondaryNameNode
2721 Jps

也可通过访问http://192.168.244.30:50070/查看hdfs是否启动成功

Hbase的安装部署

下载地址：http://mirror.bit.edu.cn/apache/hbase/1.2.3/hbase-1.2.3-bin.tar.gz

在这里，下载的是1.2.3版本

关于hbase和hadoop的版本对应信息，可参考官档的说明

http://hbase.apache.org/book/configuration.html#basic.prerequisites

# wget http://mirror.bit.edu.cn/apache/hbase/1.2.3/hbase-1.2.3-bin.tar.gz
# tar xvf hbase-1.2.3-bin.tar.gz -C /usr/local/
# cd /usr/local/hbase-1.2.3/
# vim conf/hbase-env.sh
export JAVA_HOME=/usr/local/jdk1.7.0_79

配置Hbase

# mkdir /usr/local/hbase-1.2.3/data
# vim conf/hbase-site.xml 
>
  >hbase.rootdir>hdfs://192.168.244.30:8020/hbase>hbase.zookeeper.property.dataDir>/usr/local/hbase-1.2.3/data/zookeeper>hbase.cluster.distributed>true>
 
# vim conf/regionservers 
244.30

启动Hbase

# bin/hbase-daemon.sh start zookeeper
starting zookeeper,logging to /usr/local/hbase-1.2.3/bin/../logs/hbase-root-zookeeper-hbase.out
# bin/hbase-daemon.sh start master
starting master,1)">3/bin/../logs/hbase-root-master-hbase.out
# bin/hbase-daemon.sh start regionserver
starting regionserver,1)">3/bin/../logs/hbase-root-regionserver-hbase.out

通过jps查看新增的java进程

# jps
2975 HQuorumPeer
3302 HRegionServer
3051 HMaster
3332 Jps

可以看出，新增了HQuorumPeer，HRegionServer和HMaster三个进程。

通过http://192.168.244.30:16030/访问Hbase的web页面

至此，Hbase的伪分布式集群搭建完毕

参考

1. http://hadoop.apache.org/docs/r2.5.2/hadoop-project-dist/hadoop-common/SingleCluster.html

2. http://hbase.apache.org/book.html#quickstart