hadoop单点安装以及配置【附件】

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前言

       hadoop安装版本为：hadoop-2.7.1。

 

下载hadoop

       Linux终端：wget http://mirrors.cnnic.cn/apache/hadoop/common/hadoop-2.7.1/hadoop-2.7.1.tar.gz

 

配置SSH

   1.配置ssh：ssh-keygen -t rsa -P ""；

    2.密钥启用SSH访问本地计算机：cat /home/hduser_/.ssd/id_rsa.pub >> /home/hduser_/.ssh/authorized_keys；

 

 修改hadoop配置

    1.解压hadoop 到 usr/local/hadoop；

    2.配置hadoop环境变量到~/.bashrc：             

 

#Set HADOOP_HOME
export HADOOP_HOME=/usr/local/hadoop
export PATH=$PATH:$HADOOP_HOME/bin     

 

     3.使配置生效：source ~/.bashrc

配置关联HDFS

     1.配置JAVA_HOME到hadoop-env.sh：vi /usr/local/hadoop/etc/hadoop/hadoop-env.sh;

 

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     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.

# Set Hadoop-specific environment variables here.

# The only required environment variable is JAVA_HOME.  All others are
# optional.  When running a distributed configuration it is best to
# set JAVA_HOME in this file, so that it is correctly defined on
# remote nodes.

# The java implementation to use.
export JAVA_HOME=/usr/java/jdk1.7.0_80

# The jsvc implementation to use. Jsvc is required to run secure datanodes
# that bind to privileged ports to provide authentication of data transfer
# protocol.  Jsvc is not required if SASL is configured for authentication of
# data transfer protocol using non-privileged ports.
#export JSVC_HOME=${JSVC_HOME}

      2.在$HADOOP_HOME/etc/hadoop/core-site.xml 文件配置hadoop存储数据相关参数，

 

        vi /usr/local/hadoop/etc/hadoop/core-site.xml,修改如下：

    
    hadoop.tmp.dir
    /app/hadoop/tmp
    Parent directory for other temporary directories.


    
    fs.defaultFS 
    hdfs://localhost:54310
    The name of the default file system. 

     3.创建存储文件目录：mkdir -p /app/hadoop/tmp；

     4.授予权限：chmod 750 /app/hadoop/tmp

 

Map Reduce配置

     1.设置hadoop环境变量：vi /etc/profile.d/hadoop.sh;

export HADOOP_HOME=/usr/local/hadoop

     2.授权：chmod +x /etc/profile.d/hadoop.sh；

     3.配置mapred，先在模板复制mapred-site.xml ，再编辑：

        复制：cp $HADOOP_HOME/etc/hadoop/mapred-site.xml.template $HADOOP_HOME/etc/hadoop/mapred-site.xml；

        编辑：vi $HADOOP_HOME/etc/hadoop/mapred-site.xml

    mapreduce.jobtracker.address
    localhost:54311
    MapReduce job tracker runs at this host and port.
    

 

配置HDFS

     1,编辑hdfs-site.xml配置：vi $HADOOP_HOME/etc/hadoop/hdfs-site.xml；      

    dfs.replication
    1
    Default block replication.


    dfs.datanode.data.dir
    /home/hduser_/hdfs

      2.创建配置指定的目录：mkdir -p /home/hduser_/hdfs

      3.授权：chmod 750 /home/hduser_/hdfs

 

 

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