2025/1/17

# 安装Java
sudo apt update
sudo apt install openjdk-8-jdk -y

# 配置Java环境变量
echo "export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64" >> ~/.bashrc
echo "export PATH=\$JAVA_HOME/bin:\$PATH" >> ~/.bashrc
source ~/.bashrc

# 验证Java安装
java -version

# 下载Hadoop
wget https://downloads.apache.org/hadoop/common/hadoop-2.7.1/hadoop-2.7.1.tar.gz

# 解压到指定目录
sudo tar -xzf hadoop-2.7.1.tar.gz -C /usr/local/
sudo mv /usr/local/hadoop-2.7.1 /usr/local/hadoop

# 配置Hadoop环境变量
echo "export HADOOP_HOME=/usr/local/hadoop" >> ~/.bashrc
echo "export PATH=\$HADOOP_HOME/bin:\$PATH" >> ~/.bashrc
source ~/.bashrc

# 验证Hadoop安装
hadoop version