Ubuntu12.04 Hadoop单机搭建

一直都听别人说Hadoop,还是蛮神秘的，不过看介绍才知道这个是整分布式的。现在分布式，大数据都是挺火的，不得不让人去凑个热闹呀。

先说下我的环境:

准备工作,Hadoop是Apache的产品,你懂的,这个当然和Java相关了,所以你得有一个Java编译器才行,不管你是OpenJDK,还是OraceJDK,你都要整一个不是.

好了，进入正题。

1,我们得去Hadoop官网去下载,我这里选择最新的hadoop-2.3.0版本,其他版本记得甄别一下,毕竟测试环境,当然用最新的好了.

解压压缩包,复制到制定的位置.

2,为啥,我要说版本问题呢,因为,这个配置文件的位置,之前的版本和现在版本有很大差异的.

当然版本配置文件地址在

而我们要修改的配置文件有

hadoop-env.sh 找到JAVA_HOME,把它修改成这样.

# The java implementation to use.

2 export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_45

core-site.xml

    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. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://127.0.0.1:9000</value>
</property>
</configuration>

hdfs-site.xml

    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. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/usr/local/hadoop/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/usr/local/hadoop/dfs/data</value>
</property>
</configuration>

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