wsl [Ubuntu20.04.6] 安装 Hadoop

文章目录

• 1.安装WSL
• 2.安装Java
• 安装Hadoop3.3
• • 配置文件
  • • 1.修改hadoop-env.sh
    • 2.修改core-site.xml
    • 3.修改hdfs-site.xml
• ssh
• 启动

1.安装WSL

• 重启电脑

管理员打开powershell

PS C:\windows\system32> wsl --list --online
PS C:\windows\system32> wsl --install -d Ubuntu-20.04

2.安装Java

# 下载链接
https://repo.huaweicloud.com/java/jdk/8u202-b08/jdk-8u202-linux-x64.tar.gz

# 安装Java
sudo tar -zxvf  jdk-*-linux-x64.tar.gz -C  /usr/local 
cd /usr/local
sudo mv jdk* jdk8

环境变量
vim ~/.bashrc

# jdk环境
export JAVA_HOME=/usr/local/jdk8
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

source .bashrc
java -version

安装Hadoop3.3

# 下载
https://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/hadoop-3.3.1/hadoop-3.3.1.tar.gz

sudo tar -zxvf  hadoop*.tar.gz -C  /usr/local 
cd /usr/local
sudo mv hadoop* hadoop

• 环境变量
  vim ~/.bashrc

  Hadoop环境

  export HADOOP_HOME=/usr/local/hadoop
  export HADOOP_COMMON_LIB_NATIVE_DIR=HADOOP_HOME/lib/native export PATH=PATH:HADOOP_HOME/bin:HADOOP_HOME/sbin
  export JAVA_LIBRAY_PATH=/usr/local/hadoop/lib/native

source ~/.bashrc

hadoop version

配置文件

cd /usr/local/hadoop/etc/hadoop

1.修改hadoop-env.sh

1. 在hadoop-env.sh顶部添加

   export HDFS_NAMENODE_USER=用户名
   export HDFS_DATANODE_USER=用户名
   export HDFS_SECONDARYNAMENODE_USER=用户名
   export YARN_RESOURCEMANAGER_USER=用户名
   export YARN_NODEMANAGER_USER=用户名

2. 在hadoop-env.sh尾部添加

   export JAVA_HOME=/usr/local/jdk8

   解决Unable to load native-hadoop library for your platform...

   export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib/native"

2.修改core-site.xml

<configuration>
        <property>
                <name>hadoop.tmp.dir</name>
                <value>file:/usr/local/hadoop/tmp</value>
                <description>Abase for other temporary directories.</description>
        </property>
        <property>
                <name>fs.defaultFS</name>
                <value>hdfs://localhost:9000</value>
        </property>
</configuration>

3.修改hdfs-site.xml

<configuration>
        <property>
                <name>dfs.replication</name>
                <value>1</value>
        </property>
        <property>
                <name>dfs.namenode.name.dir</name>
                <value>file:/usr/local/hadoop/tmp/dfs/name</value>
        </property>
        <property>
                <name>dfs.datanode.data.dir</name>
                <value>file:/usr/local/hadoop/tmp/dfs/data</value>
        </property>
</configuration>

文章目录

• 1.安装WSL
• 2.安装Java
• 安装Hadoop3.3
• • 配置文件
  • • 1.修改hadoop-env.sh
    • 2.修改core-site.xml
    • 3.修改hdfs-site.xml
• ssh
• 启动

ssh

sudo service ssh start
# 尝试是否可以连接本机(重要)
ssh 用户名@localhost

解决Permission denied (publickey).

连不上参考 解决Permission denied (publickey).

启动

/usr/local/hadoop/bin/hdfs namenode --format

./sbin/start-all.sh

jps

恭喜你, 安装成功!

参考