一、概述
随着互联网的发展，各行各业的快速发展，大数据爆炸的时代，数据处理显得越来越重要了，因此学习大数据的分析也是让各位IT人员极为重要了。学习大数据的基础，就得从hadoop开始，后续要学习到的kafka、Hbase、Hive、flink等，都会多少使用到这个hadoop的相关内容，特别是HDFS和YARN两大组件功能。
后续我们是先搭建hadoop的安全分布式环境。

二、环境准备
1、服务器准备，为了体现集群安装高可用，申请了三台集群
机器名称 Ip地址 操作系统 位数 备注
hadoop01 10.10.36.20 Linux 64 Master
hadoop02 10.10.36.164 Linux 64 slaver
hadoop03 10.10.5.247 Linux 64 slaver
另外要注意hosts文件的修改。
2、SSH无密授权登录
设置ssh无密授权登录，是为了后续各类集群通信做准备。
3、Java安装准备
基于hadoop的安装，建立在Java的基础上，因此Java的安装要准备。
可以到官网下载，我准备的版本是jdk-8u181-linux-x64.tar.gz
4、Hadoop安装准备
我准备的版本是hadoop-3.2.1.tar.gz，可以到官网下载。
三、安装步骤
1、首先是配置好hosts文件，在三台机器的/etc/hosts文件编辑，添加好hosts文件

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2、ssh无密授权登录配置，在hadoop01服务器，进入/root/.ssh目录，执行ssh-keygen -t rsa，回车三次

2.png

会得到id_rsa（私钥）和id_rsa.pub（公钥）两个文件，在其余两台机器都执行相同的操作，vi打开id_rsa.pub，将内容统一拷贝authorized_keys文件，包括hadoop02和hadoop03的id_rsa.pub文件内容。最后再统一将authorized_keys文件拷贝到hadoop02和hadoop03。最后可以验证ssh免密登录了。如需详细了解SSH免密登录，可以自行谷歌或百度了解。

3、检查Java的安装，如下：

1.png

由于我的机器已经安装了，也配置了jdk的环境变量，所以就不再赘述，如需了解，自行Google或百度JDK-Linux环境变量设置。
4、Hadoop安装，到了安装的重头戏了。
首先我们需要在服务器home目录下建一个子目录

2.png

将hadoop压缩包解压到/home/hadoop-ha/目录下

3.png

4.png

5.png

6.png

<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://hadoop01:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/home/hadoop-ha/tmp</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://hadoop01:8020</value>
</property>
</configuration>

还有修改mapred-site.xml文件的配置

<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapreduce.jobhistory.address</name>
<value>hadoop01:10020</value>
</property>
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>hadoop01:19888</value>
</property>
<property>
<name>mapreduce.application.classpath</name>
<value>HADOOP_MAPRED_HOME/sharehadoop/mapreduce/lib/*</value>
</property>
</configuration>

Yarn-site.xml文件的配置
<configuration>

<property>
<name>yarn.resourcemanager.hostname</name>
<value>hadoop01</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.webapp.address</name>
<value>hadoop01:8088</value>
</property>
<property>
<name>yarn.scheduler.maximum-allocation-mb</name>
<value>2048</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
<property>
<name>yarn.nodemanager.env-whitelist</name>
<value>JAVA_HOME,HADOOP_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
</property>
<property>
<name>yarn.application.classpath</name>
<value>/home/hadoop-ha/hadoop-3.2.1/etc/hadoop:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/lib/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/accessors-smart-1.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/animal-sniffer-annotations-1.17.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/asm-5.0.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/audience-annotations-0.5.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/avro-1.7.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/checker-qual-2.5.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-beanutils-1.9.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-cli-1.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-codec-1.11.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-collections-3.2.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-compress-1.18.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-configuration2-2.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-io-2.5.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-lang3-3.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-logging-1.1.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-math3-3.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-net-3.6.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/commons-text-1.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/curator-client-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/curator-framework-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/curator-recipes-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/dnsjava-2.1.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/error_prone_annotations-2.2.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/failureaccess-1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/gson-2.2.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/guava-27.0-jre.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/hadoop-annotations-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/hadoop-auth-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/htrace-core4-4.1.0-incubating.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/httpclient-4.5.6.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/httpcore-4.4.10.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/j2objc-annotations-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-annotations-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-core-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-databind-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/javax.servlet-api-3.1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jaxb-api-2.2.11.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jcip-annotations-1.0-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jersey-core-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jersey-json-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jersey-server-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jersey-servlet-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jettison-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-http-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-io-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-security-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-server-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-servlet-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-util-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-webapp-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jetty-xml-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jsch-0.1.54.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/json-smart-2.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jsp-api-2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jsr305-3.0.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jsr311-api-1.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/jul-to-slf4j-1.7.25.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-admin-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-client-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-common-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-core-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-crypto-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-identity-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-server-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-simplekdc-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerb-util-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerby-asn1-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerby-config-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerby-pkix-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerby-util-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/kerby-xdr-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/log4j-1.2.17.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/metrics-core-3.2.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/netty-3.10.5.Final.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/nimbus-jose-jwt-4.41.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/paranamer-2.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/re2j-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/slf4j-api-1.7.25.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/snappy-java-1.0.5.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/stax2-api-3.1.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/token-provider-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/woodstox-core-5.0.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib/zookeeper-3.4.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/hadoop-common-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/hadoop-common-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/hadoop-kms-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/hadoop-nfs-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/jdiff:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/lib:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/sources:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/common/webapps:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/accessors-smart-1.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/animal-sniffer-annotations-1.17.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/asm-5.0.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/audience-annotations-0.5.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/avro-1.7.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/checker-qual-2.5.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-beanutils-1.9.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-codec-1.11.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-collections-3.2.2.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-compress-1.18.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-configuration2-2.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-io-2.5.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-lang3-3.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-math3-3.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-net-3.6.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/commons-text-1.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/curator-client-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/curator-framework-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/curator-recipes-2.13.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/dnsjava-2.1.7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/error_prone_annotations-2.2.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/failureaccess-1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/gson-2.2.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/guava-27.0-jre.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/hadoop-annotations-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/hadoop-auth-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/htrace-core4-4.1.0-incubating.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/httpclient-4.5.6.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/httpcore-4.4.10.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/j2objc-annotations-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-annotations-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-core-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-databind-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-jaxrs-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jackson-xc-1.9.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/javax.servlet-api-3.1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jaxb-api-2.2.11.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jaxb-impl-2.2.3-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jcip-annotations-1.0-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jersey-core-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jersey-json-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jersey-server-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jersey-servlet-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jettison-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-http-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-io-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-security-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-server-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-servlet-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-util-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-util-ajax-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-webapp-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jetty-xml-9.3.24.v20180605.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jsch-0.1.54.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/json-simple-1.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/json-smart-2.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/jsr311-api-1.1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-admin-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-client-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-common-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-core-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-crypto-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-identity-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-server-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-simplekdc-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerb-util-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerby-asn1-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerby-config-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerby-pkix-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerby-util-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/kerby-xdr-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/netty-3.10.5.Final.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/netty-all-4.0.52.Final.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/nimbus-jose-jwt-4.41.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/okhttp-2.7.5.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/okio-1.6.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/paranamer-2.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/re2j-1.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/snappy-java-1.0.5.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/stax2-api-3.1.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/token-provider-1.0.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/woodstox-core-5.0.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib/zookeeper-3.4.13.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-client-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-client-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-httpfs-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-native-client-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-native-client-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-nfs-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-rbf-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/hadoop-hdfs-rbf-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/jdiff:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/lib:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/sources:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/hdfs/webapps:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/lib/junit-4.11.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-app-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-common-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-core-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-3.2.1-tests.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-nativetask-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-client-uploader-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/hadoop-mapreduce-examples-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/jdiff:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/lib:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/lib-examples:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/mapreduce/sources:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/aopalliance-1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/bcpkix-jdk15on-1.60.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/bcprov-jdk15on-1.60.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/ehcache-3.3.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/fst-2.50.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/geronimo-jcache_1.0_spec-1.0-alpha-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/guice-4.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/guice-servlet-4.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/HikariCP-java7-2.4.12.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/jackson-jaxrs-base-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/jackson-jaxrs-json-provider-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/jackson-module-jaxb-annotations-2.9.8.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/java-util-1.9.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/javax.inject-1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/jersey-client-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/jersey-guice-1.19.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/json-io-2.5.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/metrics-core-3.2.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/mssql-jdbc-6.2.1.jre7.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/objenesis-1.0.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/snakeyaml-1.16.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib/swagger-annotations-1.5.4.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-api-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-client-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-common-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-registry-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-common-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-nodemanager-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-router-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-tests-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-timeline-pluginstorage-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-server-web-proxy-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-services-api-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-services-core-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/hadoop-yarn-submarine-3.2.1.jar:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/lib:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/sources:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/test:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/timelineservice:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/webapps:/home/hadoop-ha/hadoop-3.2.1/share/hadoop/yarn/yarn-service-examples</value>
</property>
</configuration>

修改works文件，添加两个服务器主机
hadoop02
Hadoop03
创建目录

7.png

最后要配置一下/home/hadoop-ha/hadoop-3.2.1/sbin/ 目录下的start-dfs.sh、stop-dfs.sh文件
HDFS_DATANODE_USER=root
HDFS_DATANODE_SECURE_USER=hdfs
HDFS_NAMENODE_USER=root
HDFS_SECONDARYNAMENODE_USER=root
同时也要配置一下/home/hadoop-ha/hadoop-3.2.1/sbin/ 目录下的start-yarn.sh、stop-yarn.sh文件
YARN_RESOURCEMANAGER_USER=root
HDFS_DATANODE_USER=yarn
YARN_NODEMANAGER_USER=root

接着是将整个hadoop-ha目录文件同步到另外两台服务器。命令如下：
scp -r hadoop-ha root@hadoop02:/home/
scp -r hadoop-ha root@hadoop03:/home/

同时也同步/etc/profile文件
scp /etc/profile root@hadoop02:/etc/
scp /etc/profile root@hadoop03:/etc/

5、启动hadoop
由于hadoop01是namenode，而hadoop02和hadoop03是datanode，所以首次启动，需要对hadoop01进行初始化操作，也就是对hdfs进行格式化化。进入到/home/hadoop-ha/hadoop-3.2.1/bin目录
需要到hadoop01机器执行初始化脚本，也就是执行命令：
./hadoop namenode -format

8.png

9.png

当看到has been successfully formatted 这些提示，即为格式化成功。
最后则可以启动整体分布式服务了。进入/home/hadoop-ha/hadoop-3.2.1/sbin 目录
执行初始化脚本，也就是执行命令
./start-all.sh

10.png

使用jps命令，看到有namenode、resourcemanager、secondarynamenode进程，则说明是启动成功。
而另外两台机器，也可以jps命令查看
hadoop02

11.png

hadoop03

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