HBase之——單節點安裝

這邊博文就帶着大家一起學習如何安裝HBase，首先，我們來學習如何在單節點上安裝HBase，後續會帶着大家一起學習如何搭建HBase叢集。

一、配置伺服器主機名和IP映射

1、配置主機名

vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=liuyazhuang121
NTPSERVERARGS=iburst           

2、配置主機名映射

vim /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.209.121 liuyazhuang121           

二、安裝Hadoop

1、僞分布式安裝

2、 叢集安裝

3、 高可用叢集安裝

這篇博文中，我也是在單節點上安裝的Hadoop，将HBase和Hadoop安裝在了同一台伺服器上。由于HBase的運作依賴于Zookeeper，是以，在同一台伺服器上，又安裝了單節點的Zookeeper。

三、安裝并配置Zookeeper

HBase的運作依賴于Zookeeper，是以我們先安裝Zookeeper。

1、安裝Zookeeper

這裡我安裝的Zookeeper版本是zookeeper-3.4.9.tar.gz，上傳Zookeeper到伺服器的/usr/local目錄下，然後解壓

tar -zxvf zookeeper-3.4.9.tar.gz           

2、配置系統環境變量

vim /etc/profile
HADOOP_HOME=/usr/local/hadoop-2.5.2
ZOOKEEPER_HOME=/usr/local/zookeeper-3.4.9
PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$ZOOKEEPER_HOME/bin:$PATH
export HADOOP_HOME ZOOKEEPER_HOME PATH            

3、配置zoo.cfg

進入ZOOKEEPER_HOME/conf目錄下，執行如下指令

cp zoo_sample.cfg zoo.cfg           

然後編譯zoo.cfg檔案如下：

# 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=/usr/local/zookeeper-3.4.9/data
dataLogDir=/usr/local/zookeeper-3.4.9/dataLog
# the port at which the clients will connect
clientPort=2182
# 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           

注意：HBase中自帶有Zookeeper，為了不和HBASE中自帶的Zookeeper端口沖突，這裡的Zookeeper配置的端口為2182，并不是預設的2181，如果Hbase和Zookeeper安裝在不同的伺服器上，則不存在這種問題。

然後再ZOOKEEPER_HOME目錄下建立data、dataLog目錄。

mkdir -p /usr/local/zookeeper-3.4.9/data
mkdir -p /usr/local/zookeeper-3.4.9/dataLog           

4、啟動Zookeeper

zkServer.sh start           

四、安裝并配置HBase

1、安裝Hbase

這裡我安裝的HBase版本是hbase-0.96.2-hadoop2-bin.tar.gz，将其上傳到伺服器的/usr/local目錄下，然後輸入如下指令解壓

tar-zxvf hbase-0.96.2-hadoop2-bin.tar.gz           

vim /etc/profile
HADOOP_HOME=/usr/local/hadoop-2.5.2
ZOOKEEPER_HOME=/usr/local/zookeeper-3.4.9
HBASE_HOME=/usr/local/hbase-0.96.2-hadoop2
PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$ZOOKEEPER_HOME/bin:$HBASE_HOME/bin:$PATH
export HADOOP_HOME ZOOKEEPER_HOME PATH HBASE_HOME            

3、拷貝Hadoop的hdfs-site.xml和core-site.xml檔案

cp /usr/local/hadoop-2.5.2/etc/hadoop/core-site.xml /usr/local/hbase-0.96.2-hadoop2/conf/
cp /usr/local/hadoop-2.5.2/etc/hadoop/hdfs-site.xml /usr/local/hbase-0.96.2-hadoop2/conf/           

4、修改hbase-env.sh

4.1 修改JAVE_HOME

export JAVA_HOME=/usr/local/src/jdk1.7.0_80           

4.2 修改HBASE_MANAGES_ZK為false

修改HBASE_MANAGES_ZK為false來告訴HBase使用外部的Zookeeper

export HBASE_MANAGES_ZK=false           

5、修改hbase-site.xml

修改後的檔案如下：

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
-->
<configuration>
	<property>
			<name>hbase.rootdir</name>
			<value>hdfs://liuyazhuang121:9000/hbase</value>
	</property>
	<property>
			<name>hbase.cluster.distributed</name>
			<value>false</value>
	</property>
	<property>
			<name>hbase.zookeeper.quorum</name>
			<value>liuyazhuang121:2182</value>
	</property>
</configuration>
           

因為我們配置的Zookeeper端口為2182，是以這裡将hbase.zookeeper.quorum的value配置成了liuyazhuang121:2182

6、修改regionservers

修改regionservers檔案，将localhost修改成liuyazhuang121如下：

liuyazhuang121           

7、啟動HBase

start-hbase.sh           

8、檢視本機啟動的Java程序

[root@liuyazhuang121 conf]# jps
6008 QuorumPeerMain
2445 NameNode
2539 DataNode
7289 Jps
6153 HMaster
2723 SecondaryNameNode
2993 NodeManager
2893 ResourceManager
[root@liuyazhuang121 conf]#            

9、檢視HBase管理頁面

在浏覽器中輸入http://192.168.209.121:60010檢視HBase管理頁面如下：