1.安装部署
1.1安装环境准备
1.1.1 设置免密登录
ssh localhost
cd ~/.ssh
ssh-keygen -t rsa
enter
enter
enter
enter
1.1.2关闭防火墙
systemctl status firewalld 查看防火墙
systemctl stop firewalld 关闭防火墙
systemctl disable firewalld 永久关闭防火墙
1.1.3删除原有的JDK
java -version
rpm -qa | grep jdk
1.2安装JDK
1.2.1配置环境变量
vim /etc/profile
export JAVA_HOME=/opt/module/jdk1.8.0_341
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile
1.2.2验证是否安装正常
java -versoin

1.3安装Hadoop
1.3.1 解压
解压:tar -zxvf Hadoop-3.3.1-aarch64.tar.gz
mv hadoop-3.3.1/ hadoop
1.3.2配置变量
vim /etc/profile
export HADOOP_HOME=/opt/moduel/hadoop
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin
export HADOOP_CONF_DIR=${HADOOP_HOME}/etc/hadoop
1.3.3验证环境变量
hadoop version

1.3.4 配置hadoop环境脚本文件中的JAVA_HOME参数
cd ${HADOOP_HOME}/etc/hadoop
分别在hadoop-env.sh、mapred-env.sh和yarn-env.sh中添加如下参数:
export JAVA_HOME=/opt/module/jdk1.8.0_341
1.3.5配置core-site.xml文件(指定NameNode节点)
vim ${HADOOP_CONF_DIR}/core-site.xml
加入以下配置
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://10.0.1.121:9310