配置前先查下JAVA_HOME的位置
vim /etc/profile
#set java environment
JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-1.el7_7.x86_64
JRE_HOME=$JAVA_HOME/jre
CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin:/opt/confluent-5.2.2/bin
HADOOP_HOME=/hongfeng/software/hadoop-3.0.0
PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
vim /etc/hosts
10.10.37.27 udisk-test-1
10.10.77.8 udisk-test-2
10.10.24.86 udisk-test-3
编辑hadoop相关配置文件：
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/hadoop-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-1.el7_7.x86_64
export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export HDFS_NAMENODE_OPTS="-XX:+UseParallelGC -Xmx4g"
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://udisk-test-1:8020</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/data/hadoop/hdfs</value>
</property>
<property>
<name>fs.trash.interval</name>
<value>1440</value>
</property>
</configuration>
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/hdfs-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.http-address</name>
<value>udisk-test-1:50070</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>udisk-test-3:9868</value>
</property>
<configuration>
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/workers
Fengfeng-dr-algo1
Fengfeng-dr-algo2
Fengfeng-dr-algo3
Fengfeng-dr-algo4
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/yarn-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-1.el7_7.x86_64
export YARN_RESOURCEMANAGER_USER=root
export HADOOP_SECURE_DN_USER=yarn
export YARN_NODEMANAGER_USER=root
vim /hongfeng/software/hadoop-3.0.0/etc/hadoop/yarn-site.xml
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>udisk-test-2</value>
</property>
<property>
<name>yarn.resourcemanager.address</name>
<value>udisk-test-2:8032</value>
</property>
<property>
<name>yarn.resourcemanager.scheduler.address</name>
<value>udisk-test-2:8030</value>
</property>
<property>
<name>yarn.resourcemanager.resource-tracker.address</name>
<value>udisk-test-2:8031</value>
</property>
<property>
<name>yarn.resourcemanager.admin.address</name>
<value>udisk-test-2:8033</value>
</property>
<property>
<name>yarn.resourcemanager.webapp.address</name>
<value>udisk-test-2:8088</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
cp mapred-site.xml.template mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapreduce.jobhistory.address</name>
<value>udisk-test-2:10020</value>
</property>
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>udisk-test-2:19888</value>
</property>
<property>
<name>yarn.app.mapreduce.am.env</name>
<value>HADOOP_MAPRED_HOME=/hongfeng/software/hadoop-3.0.0</value>
</property>
<property>
<name>mapreduce.map.env</name>
<value>HADOOP_MAPRED_HOME=/hongfeng/software/hadoop-3.0.0</value>
</property>
<property>
<name>mapreduce.reduce.env</name>
<value>HADOOP_MAPRED_HOME=/hongfeng/software/hadoop-3.0.0</value>
</property>
<property>
<name>yarn.app.mapreduce.am.staging-dir</name>
<value>/history</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
<property>
<name>mapreduce.map.log.level</name>
<value>ERROR</value>
</property>
<property>
<name>mapreduce.reduce.log.level</name>
<value>ERROR</value>
</property>
</configuration>
scp /etc/profile udisk-test-2:/etc/profile
scp /etc/profile udisk-test-3:/etc/profile
scp -r /hongfeng/software/hadoop-3.0.0/ udisk-test-2:/hongfeng/software/
scp -r /hongfeng/software/hadoop-3.0.0/ udisk-test-3:/hongfeng/software/
#格式化
source /etc/profile #三个节点
hdfs namenode -format
[root@Fengfeng-dr-algo1 hadoop]# ll /data/hadoop/hdfs/
total 0
drwxr-xr-x. 3 root root 18 Aug 14 07:55 dfs
[root@Fengfeng-dr-algo1 hadoop]# ll /data/hadoop/hdfs/dfs/name/current/
total 16
-rw-r--r--. 1 root root 391 Aug 14 07:55 fsimage_0000000000000000000
-rw-r--r--. 1 root root 62 Aug 14 07:55 fsimage_0000000000000000000.md5
-rw-r--r--. 1 root root 2 Aug 14 07:55 seen_txid
-rw-r--r--. 1 root root 216 Aug 14 07:55 VERSION
启动集群：
start-dfs.sh
ansible all -m shell -a 'jps'
在Fengfeng-dr-algo2上启动yarn:
start-yarn.sh
ansible all -m shell -a 'jps'
Fengfeng-dr-algo3 | SUCCESS | rc=0 >>
20978 DataNode
21444 Jps
21295 NodeManager
Fengfeng-dr-algo2 | SUCCESS | rc=0 >>
24867 ResourceManager
24356 DataNode
25480 NodeManager
25676 Jps
Fengfeng-dr-algo4 | SUCCESS | rc=0 >>
24625 NodeManager
24180 DataNode
24292 SecondaryNameNode
24775 Jps
Fengfeng-dr-algo1 | SUCCESS | rc=0 >>
24641 NameNode
25700 Jps
24789 DataNode
25500 NodeManager
hdfs web:
http://Fengfeng-dr-algo1:50070
yarn web:
http://Fengfeng-dr-algo2:8088/cluster
测试:
先做一个1.txt文件, copy一段英文,传到htfs
hadoop jar /hongfeng/software/hadoop-3.1.2/share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.2.jar wordcount /1.txt /1.output
https://www.cndba.cn/dave/article/3260