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Hbase环境搭建

• Hbase环境搭建
  • hadoop为HA的Hbase配置
    • Zookeeper集群的正常部署并启动
    • Hadoop集群的正常部署并启动
    • 解压HBase
    • 修改HBase配置文件
    • 替换HBase根目录下的lib目录下的jar包，以解决兼容问题
    • 将Hadoop配置文件软连接到HBase的conf目录下
    • 将整理好的HBase安装目录scp到其他机器节点
    • 启动服务
    • 查看页面验证是否启动成功
    • HMaster的高可用

hadoop为HA的Hbase配置

Zookeeper集群的正常部署并启动

$ /usr/local/src/zookeeper-3.4.5-cdh5.3.6/bin/zkServer.sh start

Hadoop集群的正常部署并启动

$ /usr/local/src/hadoop-2.5.0-cdh5.3.6/sbin/start-dfs.sh

$ /usr/local/src/hadoop-2.5.0-cdh5.3.6/sbin/start-yarn.sh

解压HBase

$ tar -zxf /opt/cdh/hbase-0.98.6-cdh5.3.6.tar.gz -C /usr/local/src/

修改HBase配置文件

• 修改hbase-env.sh文件

export JAVA_HOME=/usr/local/src/jdk1.8.0_121/

export HBASE_MANAGES_ZK=false

• 修改hbase-site.xml文件

    <!--指定hbase的根目录，mycluster：高可用hdfs名称-->
    <property>
        <name>hbase.rootdir</name>
        <value>hdfs://mycluster/hbase</value>
    </property>
    <!--是否运行在完全分布式中-->
    <property>
        <name>hbase.cluster.distributed</name>
        <value>true</value>
    </property>
    <!---高可用集群中只配置端口号就行，如果是单节点，则指明机器名-->
    <property>
        <name>hbase.master</name>
        <value>60000</value>
    </property>
    <property>
        <name>hbase.zookeeper.quorum</name>
        <value>master:2181,slave1:2181,slave2:2181</value>
    </property>
    <property>
        <name>hbase.zookeeper.property.dataDir</name>
        <value>/usr/local/src/zookeeper-3.4.5-cdh5.3.6/dataDir</value>
    </property>

• 修改regionservers文件
  master
  slave1
  slave2

替换HBase根目录下的lib目录下的jar包，以解决兼容问题

• 删除原有Jar包以及zookeeper的jar包
  $ rm -rf /usr/local/src/hbase-0.98.6-cdh5.3.6/lib/hadoop-*

  $ rm -rf lib/zookeeper-3.4.6.jar

• 拷贝新的Jar包
  这里涉及到的jar包大概是：
  hadoop-annotations-2.5.0.jar
  hadoop-auth-2.5.0-cdh5.3.6.jar
  hadoop-client-2.5.0-cdh5.3.6.jar
  hadoop-common-2.5.0-cdh5.3.6.jar
  hadoop-hdfs-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-app-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-common-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-core-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-hs-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-hs-plugins-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-jobclient-2.5.0-cdh5.3.6.jar
  hadoop-mapreduce-client-jobclient-2.5.0-cdh5.3.6-tests.jar
  hadoop-mapreduce-client-shuffle-2.5.0-cdh5.3.6.jar
  hadoop-yarn-api-2.5.0-cdh5.3.6.jar
  hadoop-yarn-applications-distributedshell-2.5.0-cdh5.3.6.jar
  hadoop-yarn-applications-unmanaged-am-launcher-2.5.0-cdh5.3.6.jar
  hadoop-yarn-client-2.5.0-cdh5.3.6.jar
  hadoop-yarn-common-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-applicationhistoryservice-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-common-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-nodemanager-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-resourcemanager-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-tests-2.5.0-cdh5.3.6.jar
  hadoop-yarn-server-web-proxy-2.5.0-cdh5.3.6.jar
  zookeeper-3.4.5-cdh5.3.6.jar

将Hadoop配置文件软连接到HBase的conf目录下

$ ln -s /usr/local/src/hadoop-2.5.0-cdh5.3.6/etc/hadoop/core-site.xml /usr/local/src/hbase-0.98.6-cdh5.3.6/conf/core-site.xml

$ ln -s /usr/local/src/hadoop-2.5.0-cdh5.3.6/etc/hadoop/hdfs-site.xml /usr/local/src/hbase-0.98.6-cdh5.3.6/conf/hdfs-site.xml

将整理好的HBase安装目录scp到其他机器节点

启动服务

$ bin/hbase-daemon.sh start master

$ bin/hbase-daemon.sh start regionserver

或者：
$ bin/start-hbase.sh

对应的停止命令：
$ bin/stop-hbase.sh

查看页面验证是否启动成功

http://192.168.159.30:60010

HMaster的高可用

• 确保HBase集群已正常停止
  $ bin/stop-hbase.sh

• 在conf目录下创建backup-masters文件
  $ touch conf/backup-masters

• 在backup-masters文件中配置高可用HMaster节点
  $ echo slave1 > conf/backup-masters

• 拷贝到其他节点的机器

• 打开页面测试
  测试http://master:60010

• 尝试关闭第一台机器的HMaster
  $ bin/hbase-daemon.sh stop master
  然后查看第二台的HMaster是否会直接启用