前言

Hadoop / Zookeeper / Hbase

因资源有限 这三个都是安装在同一台Centos7.9的机器上

但通过配置 所以在逻辑上是distributed模式

1 Java安装

1.1 下载java11

tar/opt/java/jdk-11.0.5/

1.2 环境配置修改

文件/etc/profile

export JAVA_HOME=/opt/java/jdk-11.0.5/
export CLASSPATH=$JAVA_HOME/lib
export PATH=$PATH:$JAVA_HOME/bin

执行命令使之生效

$ source /etc/profile

2 Hadoop安装

2.1 创建hadoop用户

$ adduser hadoop

2.2 修改用户目录配置

/home/hadoop/.bashrc

export HADOOP_HOME=/home/bigdata/hadoop/
export PATH=$HADOOP_HOME/sbin:$HADOOP_HOME/bin:$PATH

1.3 下载Hadoop

Apache Hadoop

下载的版本是3.3.6

tar到目录/home/bigdata/hadoop/

1.4 修改hadoop相关配置

/home/bigdata/hadoop/etc/hadoop/core-site.xml

<property>
     <name>hadoop.tmp.dir</name>
     <value>file:/home/bigdata/hadoopTmp</value>
     <description>Abase for other temporary directories.</description>
</property>
<property>
     <name>fs.defaultFS</name>
     <value>hdfs://localhost:9000</value>
</property>

/home/bigdata/hadoop/etc/hadoop/hadoop-env.sh

export JAVA_HOME=/opt/java/jdk-11.0.5/

/home/bigdata/hadoop/etc/hadoop/hdfs-site.xml

<property>
     <name>dfs.replication</name>
     <value>1</value>
</property>
<property>
     <name>dfs.namenode.name.dir</name>
     <value>file:/home/bigdata/hadoopTmp/dfs/name</value>
</property>

<property>
        <name>dfs.namenode.checkpoint.dir</name>
        <value>file:/home/bigdata/hadoopTmp/dfs/namesecondary</value>
    </property>
<property>
     <name>dfs.datanode.data.dir</name>
     <value>file:/home/bigdata/hadoopTmp/dfs/data</value>
</property>

1.5 初始化hdfs

cd /home/bigdata/hadoop

$ hdfs namenode -format

1.6 启动hdfs

cd /home/bigdata/hadoop/sbin/

$ ./start-dfs.sh

3 ZooKeeper安装

3.1 下载ZooKeeper

Apache ZooKeeper

版本是3.8.3

tar到目录/home/bigdata/zookeeper/

3.2 配置修改

3.2.1 配置改名

mv /home/bigdata/zookeeper/conf/zoo_sample.cfg /home/bigdata/zookeeper/conf/zoo.cfg

3.2.2 打开配置

vi /home/bigdata/zookeeper/conf/zoo.cfg

3.2.3 修改配置

dataDir=/home/bigdata/zookeeper/dataDir
dataLogDir=/home/bigdata/zookeeper/dataLogDir

3.2.4 启动zookeeper

cd /home/bigdata/zookeeper/bin/

./zkServer.sh start

通过jps查看zk的进程

3.2.5 查看状态

cd /home/bigdata/zookeeper/bin/

./zkServer.sh status

Hbase安装

1 修改bashrc配置

export HBASE_HOME=/home/bigdata/hbase/
export PATH=$PATH:$HBASE_HOME/bin

生效

$ source /home/hadoop/.bashrc

2 修改hbase配置文件

/home/bigdata/hbase/conf/hbase-env.sh

export JAVA_HOME=/opt/java/jdk-11.0.5/
export HBASE_CLASSPATH=/home/bigdata/hbase/conf/
export HBASE_MANAGES_ZK=false

/home/bigdata/hbase/conf/hbase-site.xml

Start

/home/bigdata/hbase/bin/start-hbase.sh

http://localhost:16010

Shell

/home/bigdata/hbase/bin/hbase shell

Shell - Command

create / list / describe / put / scan / get / display / drop / quit

create 'test', 'cf'
list 'test'
describe 'test'
put 'test', 'row1', 'cf:a', 'value1'
put 'test', 'row2', 'cf:b', 'value2'
put 'test', 'row3', 'cf:c', 'value3'
scan 'test'
get 'test', 'row1'
disable 'test'
enable 'test'
drop 'test'

Stop

/home/bigdata/hbase/bin/hbase-daemon.sh stop master

/home/bigdata/hbase/bin/stop.hbase.sh

看到最后 觉得还是看apache的吧

Apache HBase ™ Reference Guide