Hadoop-3.3.3分布式集群的文件配置，启动hadoop历史服务和启动日志聚集

一、分布式集群的文件配置

涉及$HADOOP_HOME/etc/hadoop路径下的5个文件

workers、core-site.xml、hdfs-site.xml、mapred-site.xml、yarn-site.xml

首先修改workers

进入$HADOOP_HOME/etc/hadoop

vim workers

编辑自己的主机节点。注意！每行一个，默认为把本机节点同时作为数据节点(dn)和名称节点(nn)，如果只想做名称节点(nn)就不要添加那台主机名

之后修改core-site.xml

<configuration>
        <!-- The address of Namenode -->
        <property>
                <name>fs.defaultFS</name>
                  <value>hdfs://hadoop100:8020</value>
          </property>
          <!-- The address of saving data -->
          <property>
                  <name>hadoop.tmp.dir</name>
                  <value>/opt/module/hadoop-3.3.3/data</value>
                  <description>Abase for other temporary directories.</description>
          </property>
</configuration>

修改hdfs-site.xml

<configuration>
    <!-- nn web access address -->
    <property>
                <name>dfs.namenode.http-address</name>
                <value>hadoop100:9870</value>
    </property>
    <!--n 2nn web access address -->
    <property>
                <name>dfs.namenode.secondary.http-address</name>
                <value>hadoop103:9868</value>
        </property>
        <property>
                <name>dfs.replication</name>
                <value>1</value>
        </property>
</configuration>

修改mapred-site.xml

<configuration>
    <!-- Specifies MR to run on yarn -->
    <property>
                <name>mapreduce.framework.name</name>
                <value>yarn</value>
        </property>
    <!-- Historical server server-side address -->
        <property>
                <name>mapreduce.jobhistory.address</name>
                <value>hadoop100:10020</value>
        </property>
    <!-- The web address of the historical server -->
        <property>
                <name>mapreduce.jobhistory.webapp.address</name>
                <value>hadoop100:19888</value>
        </property>
</configuration>

修改yarn代码

<configuration>
<!-- Site specific YARN configuration properties -->
    <!-- Specify the address of resourcemanager -->
    <property>
                <name>yarn.resourcemanager.hostname</name>
                <value>hadoop102</value>
        </property>
    <!-- The way to Specify MR is shffule -->
        <property>
                <name>yarn.nodemanager.aux-services</name>
                <value>mapreduce_shuffle</value>
        </property>
    <!-- Enable the log aggregation ferture -->
        <property>
                <name>yarn.log-aggregation-enable</name>
                <value>true</value>
        </property>
    <!-- Set the address of the log aggregation server -->
        <property>
                <name>yarn.log.server.url</name>
        <value>http://hadoop100:19888/jobhistory/logs</value>
        </property>
    <!-- Set the log retrntion period to 7 days -->
        <property>
                <name>yarn.log-aggregation,retain-seconds</name>
                <value>604800</value>
        </property>
</configuration>

然后将配置分发到其他机器中

cd /opt/module/hadoop-3.3.3/etc
xsync hadoop/

分发脚本