8、linux上安装hbase

1.基本信息

版本	1.2.4
安装机器	三台机器
账号	hadoop
源路径	/opt/software/hbase-1.2.4-bin.tar.gz
目标路径	/opt/hbase -> /opt/hbase-1.2.4
依赖关系	无

2.安装过程

1).使用hadoop账号解压到/opt/hadoop目录下并设置软连接：

 [root@bgs-5p173-wangwenting opt]# su hadoop
[hadoop@bgs-5p173-wangwenting opt]$ cd /opt/software
[hadoop@bgs-5p173-wangwenting software]$ tar -zxvf hbase-${version}-bin.tar.gz -C /opt
[hadoop@bgs-5p173-wangwenting software]$ cd /opt
[hadoop@bgs-5p173-wangwenting opt]$ ln -s  hbase-${version}/   hbase

2).进入/opt/hbase/conf目录,修改hbase-env.sh文件内容:

 [hadoop@bgs-5p173-wangwenting opt]$ cd /opt/hbase/conf
[hadoop@bgs-5p173-wangwenting opt]$ vim hbase-env.sh
export JAVA_HOME=/opt/java
export HBASE_PID_DIR=/opt/pids
export HADOOP_HOME=/opt/hadoop
export HBASE_HOME=/opt/hbase

3).修改hbase-site.xml文件内容:

 [hadoop@bgs-5p173-wangwenting opt]$ vim hbase-site.xml
添加下面内容
<configuration>
    <property>
        <name>hbase.rootdir</name>
        <value>hdfs://bgs-5p173-wangwenting:9000/hbase</value>
    </property>
    <property>
        <name>hbase.cluster.distributed</name>
        <value>true</value>
    </property>
    <property>
        <name>hbase.zookeeper.quorum</name>
        <value>bgs-5p173-wangwenting,bgs-5p174-wangwenting,bgs-5p175-wangwenting</value>
    </property>
</configuration>

4).修改/opt/hadoop/hbase/conf/regionservers文件内容:

 [hadoop@bgs-5p173-wangwenting opt]$ vim /opt/hbase/conf/regionservers
添加以下内容：
bgs-5p174-wangwenting
bgs-5p175-wangwenting

5).通过scp复制到其它两台机器上:

 [hadoop@bgs-5p173-wangwenting opt]$ scp -r /opt/hbase-${version} hadoop@bgs-5p174-wangwenting:/opt
[hadoop@bgs-5p174-wangwenting opt]$ ln -s hbase-${version}/  hbase
[hadoop@bgs-5p173-wangwenting opt]$ scp -r /opt/hbase-${version} hadoop@bgs-5p175-wangwenting:/opt
[hadoop@bgs-5p175-wangwenting opt]$ ln -s hbase-${version}/  hbase

6).在bgs-5p173-wangwenting上启动hbase集群:

[hadoop@bgs-5p173-wangwenting opt]$ /opt/hbase/bin/start-hbase.sh

7).查看集群是否启动，运行jps

 [hadoop@bgs-5p173-wangwenting opt]$ jps
若bgs-5p173-wangwenting如下所示：
22898 ResourceManager
20739 Jps
24383 JobHistoryServer
20286 HMaster
22722 SecondaryNameNode
22488 NameNode
[hadoop@bgs-5p174-wangwenting opt]$ jps
2141 NodeManager
3257 HRegionServer
25283 Jps
1841 DataNode
[hadoop@bgs-5p175-wangwenting opt]$ jps
2141 NodeManager
3257 HRegionServer
25283 Jps
1841 DataNode
显示有HMaster和HRegionServer,则说明启动成功

8).使用/opt/hadoop/hbase/bin/hbase shell命令测试安装结果:

[hadoop@bgs-5p173-wangwenting opt]$ /opt/hbase/bin/hbase shell

a.创建表test:

 hbase(main):002:0> create "test", "cf"
0 row(s) in 2.5840 seconds
=> Hbase::Table - test

b.列出全部表:

 hbase(main):003:0> list
TABLE                                                                                                              
test                      
1 row(s) in 0.0310 seconds
=> ["test"]

如果在输入list,有好几次，启动Hadoop和HBase之后，执行jps命令，已经看到有HMaster的进程，但是进入到HBase的shell，执行一个命令，会出现下面的错误：

解决方法：

进入到logs目录查看master的日志：发现一直显示下面的内容：

vim hbase-hadoop-master-s1.log

2017-03-13 17:13:17,374 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
2017-03-13 17:13:27,377 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
2017-03-13 17:13:37,386 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
2017-03-13 17:13:47,393 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
2017-03-13 17:13:57,395 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
2017-03-13 17:14:07,409 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...

原来是Hadoop在刚启动的时候，还处在安全模式造成的,手动退出Hadoop的安全模式.然后重新启动hbase服务。

重启后输入list，便不再报错了。

c.插入数据到test表:

 hbase(main):001:0> put "test","row","cf:a","value"
0 row(s) in 0.4150 seconds

d.查看test表信息:

 hbase(main):002:0> scan 'test'
ROW           COLUMN+CELL                                                                         
row          column=cf:a, timestamp=1447246157917, value=value                                   
1 row(s) in 0.0270 seconds

若hbase shell测试成功，则进入浏览器访问以下网址:http://172.24.5.173:16010/，

若正常显示，则hbase集群安装成功! 用ip保险一点，用域名首先要在自己的电脑host文件中配置。

9).启动thriftserver2服务

 [hadoop@bgs-5p173-wangwenting opt]$ nohup /opt/hbase/bin/hbase-daemon.sh start thrift2 &