1 下载安装包

  wget --no-check-certificate  https://mirrors.bfsu.edu.cn/apache/hadoop/common/hadoop-3.3.1/hadoop-3.3.1.tar.gz

2 解压

tar -zxvf hadoop-3.3.1.tar.gz

**3 修改 hadoop-env.sh配置文件**

vi /hadoop-3.3.1/etc/hadoop/hadoop-env.sh

加入如下配置

export JAVA_HOME=/APP/jdk1.8.0_141

**4  修改 hdfs-site.xml 配置文件**

vi /hadoop-3.3.1/etc/hadoop/hdfs-site.xml

加入如下内容,在<configuration>标签内

dfs.namenode.rpc-address localhost:9000 dfs.namenode.name.dir /APP/hdpdata/name/ dfs.datanode.data.dir /APP/hdpdata/data/ dfs.namenode.http-address localhost:6002 ``` **5 初始化namedata**

进入安装目录

/hadoop-3.3.1/bin

./hadoop  namenode  -format

查看有以下目录则初始化成功 “namenode存储元数据的位置”—> hdfs-site.xml 配置文件的位置

6 启动namenode和datanode

进入如下目录

/hadoop-3.3.1/sbin

启动

./hadoop-daemon.sh   start namenode

 ./hadoop-daemon.sh   start datanode  

3.3 配置 core-site.xml

 vi  /hadoop-3.3.1/etc/hadoop/core-site.xml

加入如下内容,在标签内

<name>fs.defaultFS</name>
  <value>hdfs://localhost:9000/</value>
  <description>The name of the default file system.  A URI whose
  scheme and authority determine the FileSystem implementation.  The
  uri's scheme determines the config property (fs.SCHEME.impl) naming
  the FileSystem implementation class.  The uri's authority is used to
  determine the host, port, etc. for a filesystem.</description>