文件:jdk1.8 hadoop
如何关闭防火墙
查看防火墙状态: systemctl status firewalld.service 关闭命令: systemctl stop firewalld.service 开机禁用防火墙自启命令 : systemctl disable firewalld.service
service network restart yum install net-tools 安装使用ifconfigHadoop-2.7.1安装
文件配置
# vi /etc/hosts 192.168.80.80 node01 192.168.80.81 node02 192.168.80.82 node03
开始安装
Hadoop安装路径:/usr/local/src/hadoop
cd /usr/local/src/ mkdir java mkdir hadoop tar -zxvf hadoop-2.7.1.tar.gz -C ./ tar -zxvf jdk-8u141-linux-x64.tar.gz -C ./ 改名字!!! cd java mv jdk1.8.0_141 jdk1.8 改名字! cd /etc/profile.d/ vi jdk.sh 创建jdk.sh并配置 export JAVA_HOME=/usr/local/src/java/jdk1.8 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib:$CLASSPATH export JAVA_PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin export PATH=$PATH:${JAVA_PATH} source /etc/profile.d/jdk.sh 最后java -version 验证是否安装成功 cd /usr/local/src/hadoop/hadoop-2.7.1/etc/hadoop/需要配置的文件(hadoop-env.sh,core-site.xml, hdfs-site.xml,mapred-site.xml,yarn-site.xml)
配置slaves
vi slaves
node01 node02 node03
配置hadoop-env.sh
vi hadoop-env.sh
JAVA_HOME=/usr/local/src/java/jdk1.8
配置core-site.xml
vi core-site.xml
fs.defaultFS hdfs://node01:9000 hadoop.tmp.dir /usr/local/src/hadoop/hadoop-data
配置hdfs-site.xml
vi hdfs-site.xml
dfs.replication 3 dfs.secondary.http.address node01:50090
配置mapred-site.xml
mv mapred-site.xml.template mapred-site.xml
vi mapred-site.xml
mapreduce.framework.name yarn
配置yarn-site.xml
vi yarn-site.xml
yarn.resourcemanager.hostname node01 yarn.nodemanager.aux-services mapreduce_shuffle
配置Hadoop环境变量
cd /etc/profile.d/ 进入 profile.d目录
通过vi hadoop.sh 创建文件
配置内容 export HADOOP_HOME=/usr/local/src/hadoop/hadoop-2.7.1 export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
使用命令:source /etc/profile.d/hadoop.sh使配置生效
免密登录三台机器
ssh-keygen -t rsa ssh-copy-id node01 ssh-copy-id node02 ssh-copy-id node03
对node01
vi ~/.ssh/config
Host node01 Hostname 192.168.80.80 Port 22 User root
对node01节点,进行格式计划 *** 作(即:hdfs要进行格式化)
在node01上执行:
hdfs namenode -format
start-all.sh
hadoop jar /usr/local/src/hadoop/hadoop-2.7.1/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.1.jar pi 5 10
192.168.80.80:50090
192.168.80.80:8088
hdfs dfsadmin -report
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