3.Hadoop Single Node Cluster安裝

Miburo發表於2024-03-27

Hadoop

3.1安裝JDK

java --version 檢視java版本，出現下面資訊代表未安裝。

輸入命令 sudo apt-get update 更新軟體包資訊。

sudo apt-get install defult-jdk 下載jdk，出現提示按y。

再次檢視jdk版本。

輸入update-alternatives --display java 檢視java安裝路徑。

3.2設定SSH無密碼登入

輸入命令 sudo apt-get install ssh 下載ssh

輸入 sudo apt-get install rsync 安裝rsync

輸入ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa 產生金鑰

檢視產生的ssh

輸入 cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys 把產生的Key放到許可證檔案中

3.3下載安裝Hadoop

wget https://archive.apache.org/dist/hadoop/common/hadoop-3.2.4/hadoop-3.2.4.tar.gz

下載慢換映象https://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/hadoop-3.2.4/hadoop-3.2.4.tar.gz

輸入sudo tar -zxvf hadoop-3.2.4.tar.gz 解壓

輸入 sudo mv hadoop-3.2.4 /usr/local/hadoop 把hadoop移動到/usr/local下

3.4設定Hadoop環境變數

sudo gedit ~/.bashrc 設定環境變數

設定JDK安裝路徑

export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
export HADOOP_HOME=/usr/local/hadoop

設定PATH
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin

設定HADOOP其他環境變數

export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME

連結庫相關設定

export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib/native"
export JAVA_LIBRARY_PATH=$HADOOP_HOME/lib/native:$JAVA_LIBRARY_PATH

source ~/.bashrc 讓設定生效

3.5修改Hadoop配置檔案

編輯Hadoop-env.sh

sudo gedit /usr/local/hadoop/etc/hadoop/hadoop-env.sh

把原來註釋掉的JAVA_HOME修改為：export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64

設定core-site.xml

sudo gedit /usr/local/hadoop/etc/hadoop/core-site.xml

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

編輯YARN-site.xml

sudo gedit /usr/local/hadoop/etc/hadoop/yarn-site.xml

<property>
    <name>yarn.nodemanager.aux.services</name>
    <value>mapreduce_shuffle</value>
</property>

<property>
    <name>yarn.nodemanager.aux.services.mapreduce.shuffle.class</name>
    <value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
</configuration>

設定mapred-site.xml

sudo cp /usr/local/hadoop/etc/hadoop/mapred-site.xml /usr/local/hadoop/mapred-site.xml

sudo gedit /usr/local/hadoop/etc/hadoop/mapred-site.xml

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

編輯hdfs-site.xml

sudo gedit /usr/local/hadoop/etc/hadoop/hdfs-site.xml

<configuration>
<property>
    <name>dfs.replication</name>
    <value>3</value>
</property>
<property>
    <name>dfs.namenode.name.dir</name>
    <value>file:/usr/local/hadoop/hadoop_data/hdfs/namenode</value>
</property>
<property>
    <name>dfs.datanode.data.dir</name>
    <value>file:/usr/local/hadoop/hadoop_data/hdfs/datanode</value>
</property>
</configuration>