HBase伪分布式安装与配置

主要讲解配置过程。

一、修改hbase-env.sh文件

① 指定JDK和hadoop的conf目录的位置

# The java implementation to use.  Java 1.6 required.

 export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_31

# Extra Java CLASSPATH elements.  Optional.

 export HBASE_CLASSPATH=/home/hadoop/hadoop-1.2.1/conf  

② 如果使用HBase自带的ZooKeeper,还需将HBASE_MANAGES_ZK设为true。

# Tell HBase whether it should manage it's own instance of Zookeeper or not.

 export HBASE_MANAGES_ZK=true  

二、修改hbase-site.xml文件

<configuration>

    <property>

        <name>hbase.rootdir</name>

        <value>hdfs://localhost:9000/hbase</value>

    </property>

    <property>

        <name>hbase.cluster.distributed</name>

        <value>true</value>

    </property>

</configuration>  

注意：hbade.rootdir中设置的值为namenode机器的ip和端口。

三、Jar包替换

① 将HBase安装目录下lib目录下的“hadoop-core-xxxxxx.jar”包删除

hadoop@ubuntu:~/hbase-0.98.11/lib$ rm hadoop-core-1.2.1.jar 

② 将Hadoop安装目录下的“hadoop-core-xxxx.jar”拷贝至HBase的lib目录下。

hadoop@ubuntu:~/hadoop-1.2.1$ cp hadoop-core-1.2.1.jar /home/hadoop/lib/

四、先启动Hadoop，再启动HBase。

hadoop@ubuntu:~$ start-all.sh 

starting namenode, logging to /home/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-hadoop-namenode-ubuntu.out

localhost: starting datanode, logging to /home/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-hadoop-datanode-ubuntu.out

localhost: starting secondarynamenode, logging to /home/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-hadoop-secondarynamenode-ubuntu.out

starting jobtracker, logging to /home/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-hadoop-jobtracker-ubuntu.out

localhost: starting tasktracker, logging to /home/hadoop/hadoop-1.2.1/libexec/../logs/hadoop-hadoop-tasktracker-ubuntu.out

hadoop@ubuntu:~$ start-hbase.sh 

localhost: starting zookeeper, logging to /home/hadoop/hbase-0.98.11/bin/../logs/hbase-hadoop-zookeeper-ubuntu.out

starting master, logging to /home/hadoop/hbase-0.98.11/logs/hbase-hadoop-master-ubuntu.out

localhost: starting regionserver, logging to /home/hadoop/hbase-0.98.11/bin/../logs/hbase-hadoop-regionserver-ubuntu.out

使用jps命令，测试启动成功与否。

hadoop@ubuntu:~$ jps

11088 HRegionServer

10192 HQuorumPeer

9889 TaskTracker

9665 SecondaryNameNode

9524 DataNode

9748 JobTracker

11142 Jps

9385 NameNode

10906 HMaster

可看到，我们的HMaster,HRegionServer,HQuormPeer均启动成功了。

疑惑：发现有时HMaster启动以后儿，自动又挂了，不知道什么原因，这时我们也就只能再重新启动一起HBase了。