bigdata——HBase+zookeeper+Hadoop集群构筑 之 Hadoop YARN集群构筑

最近项目调查闲下来了，有时间让大脑来整体之前做过的调查，为了便于基于存档，遂将其记录下来，希望对后来者有所帮助。

背景

为了了解Hbase集群下数据的查询以及安全性方面的性能数据，需要搭建HBase集群，简单测试。

角色分类

+--------------+-------------+---------------------+-----------------+
|   mashine    |    Hadoop   |       zookeeper     |      Hbase      |
+--------------+-------------+---------------------+-----------------+
|   sv004      |    Master   |       leader        |      HMaster    |
+--------------+-------------+---------------------+-----------------+
|   sv001      |    Slave1   |       follower      |  HRegionserver  |
+--------------+-------------+---------------------+-----------------+
|   sv002      |    Slave2   |       follower      |  HRegionserver  |
+--------------+-------------+---------------------+-----------------+
|   sv003      |    Slave3   |       follower      |  HRegionserver  |
+--------------+-------------+---------------------+-----------------+

因为本次测试的目标是RegionServer发生故障的情况下，region移动对查询的性能影响，为了测试的简单化，所以本次搭建的集群只有一个HMaster，缺点就是一旦HMaster发生故障的话，整个环境就无法使用了，需要重新全部启动。一般为了避免这种情况，都是建议至少2个HMaster，一个是active状态的，一个是standby状态的。

虚拟机list对比如下：

172.28.157.1 sv001
172.28.157.2 sv002
172.28.157.3 sv003
172.28.157.4 sv004

Hadoop YARN集群搭建

本次使用的物件是hadoop-2.5.2.bin.gz

操作流程

• 下载hadoop-2.5.2.bin.gz，详细参照hadoop官网
• 解压

         

tar -zxvf hadoop-2.5.2.bin.gz

• conf文件配置

1.        hadoop-env.sh

         export JAVA_HOME=/usr/java/jdk1.7.0_67

                 根据自己虚拟机的实际修改

         2.        core-site.xml

            

<configuration>
        <property>
                <name>hadoop.tmp.dir</name>
                <value>/tmp/hadoop</value>
        </property>
        <property>
                <name>fs.defaultFS</name>
                <value>hdfs://sv004:9000</value>
        </property>
</configuration>

   

      3.      hdfs-site.xml

            

<configuration>
    <property>
                <name>dfs.namenode.name.dir</name>
                <value>/home/project/hadoop-2.5.2/hdfs/name</value>
                <final>true</final>
    </property>
    <property>
               <name>dfs.datanode.data.dir</name>
               <value>/home/project/hadoop-2.5.2/hdfs/data</value>
               <final>true</final>
    </property>
    <property>
               <name>dfs.replication</name>
               <value>3</value>
               </property>
    <property>
               <name>dfs.permissions</name>
               <value>false</value>
    </property>
</configuration>

       4.   mapred-site.xml

<configuration>
	<property>
		<name>mapreduce.framework.name</name>
		<value>Yarn</value>
	</property>
	<property>
		<name>mapreduce.jobhistory.address</name>
		<value>sv004:10020</value>
	</property>
	<property>
		<name>mapreduce.jobhistory.webapp.address</name>
		<value>sv004:19888</value>
	</property>
	<property>
		<name>mapreduce.jobhistory.intermediate-done-dir</name>
		<value>/home/project/hadoop-2.5.2/tmp</value>
	</property>
	<property>
		<name>mapreduce.jobhistory.done-dir</name>
		<value>/home/project/hadoop-2.5.2/done</value>
	</property>
</configuration>

 

      5. yarn-site.xml

     

<configuration>
	<!-- Site specific YARN configuration properties -->
	<property>
		<name>Yarn.nodemanager.aux-services</name>
		<value>mapreduce.shuffle</value>
	</property>
	<property>
		<name>yarn.resourcemanager.hostname</name>
		<value>sv004</value>
	</property>
	<property>
		<name>Yarn.resourcemanager.address</name>
		<value>sv004:18040</value>
	</property>
	<property>
		<name>Yarn.resourcemanager.scheduler.address</name>
		<value>sv004:18030</value>
	</property>
	<property>
		<name>Yarn.resourcemanager.resource-tracker.address</name>
		<value>sv004:18025</value>
	</property>
	<property>
		<name>Yarn.resourcemanager.admin.address</name>
		<value>sv004:18041</value>
	</property>
	<property>
		<name>Yarn.resourcemanager.webapp.address</name>
		<value>sv004:8088</value>
	</property>
	<property>
		<name>Yarn.nodemanager.local-dirs</name>
		<value>/home/project/hadoop-2.5.2/mynode/my</value>
	</property>
	<property>
		<name>Yarn.nodemanager.log-dirs</name>
		<value>/home/project/hadoop-2.5.2/mynode/logs</value>
	</property>
	<property>
		<name>Yarn.nodemanager.log.retain-seconds</name>
		<value>10800</value>
	</property>
	<property>
		<name>Yarn.nodemanager.remote-app-log-dir</name>
		<value>/logs</value>
	</property>
	<property>
		<name>Yarn.nodemanager.remote-app-log-dir-suffix</name>
		<value>logs</value>
	</property>
	<property>
		<name>Yarn.log-aggregation.retain-seconds</name>
		<value>-1</value>
	</property>
	<property>
		<name>Yarn.log-aggregation.retain-check-interval-seconds</name>
		<value>-1</value>
	</property>
</configuration> 

    6.   slaves

sv001
sv002
sv003

• SSH无密码配置

             无密码登录，这个此处就不记述了，网上的帖子比较多。

• /etc/hosts文件修改
  

         追加如下信息：

172.28.157.1 sv001
172.28.157.2 sv002
172.28.157.3 sv003
172.28.157.4 sv004

启动流程

• $HADOOP_HOME/bin/hadoop namenode -format
• $HADOOP_HOME/sbin/start-all.sh
• $HADOOP_HOME/bin/hadoop dfsadmin -report   (状态确认)

停止

• $HADOOP_HOME/sbin/stop-all.sh