linux下怎么配置hadoop

sudo apt-get update
sudo apt-get install openjdk-8-jdk

java -version

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$PATH:$JAVA_HOME/bin

source ~/.bashrc

wget https://downloads.apache.org/hadoop/common/hadoop-3.3.1/hadoop-3.3.1.tar.gz
tar -xzvf hadoop-3.3.1.tar.gz -C /opt/

mkdir -p /opt/hadoop-3.3.1/data/namenode
mkdir -p /opt/hadoop-3.3.1/data/datanode

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

<configuration>
    <property>
        <name>dfs.replication</name>
        <value>1</value>
    </Property>
    <property>
        <name>dfs.namenode.name.dir</name>
        <value>/opt/hadoop-3.3.1/data/namenode</value>
    </property>
    <property>
        <name>dfs.datanode.data.dir</name>
        <value>/opt/hadoop-3.3.1/data/datanode</value>
    </property>
</configuration>

<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
</configuration>

<configuration>
    <property>
        <name>yarn.resourcemanager.hostname</name>
        <value>localhost</value>
    </property>
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
</configuration>

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export HADOOP_HOME=/opt/hadoop-3.3.1
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

hdfs namenode -format

start-dfs.sh
start-yarn.sh

jps