Hadoop安装错误总结

Master的NodeManager/DateNode未启动

日志中未出现任何错误

• 正常现象，如需在Master中启动可在slave文件中
  slaves

  localhost
  slave01
  slave02

Master的ResourceManager未启动

1. 检查yarn-site.xml
2. 检查mapred-site.xml

Slave的DateNode未启动

• 检查yarn-site.xml
  yarn-site.xml

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

Name node is in safe mode

• 退出Safe Mode

  hadoop dfsadmin -safemode leave

参考配置

core-site.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
    <name>fs.defaultFS</name>
    <value>hdfs://master:9000</value>
</property>
<property>
    <name>hadoop.tmp.dir</name>
    <value>file:///home/zkpk/hadooptmpdata</value>
</property>
</configuration>

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>1</value>
</property><property>
    <name>dfs.namenode.name.dir</name>
    <value>file:///home/zkpk/hadoopname</value>
</property><property>
    <name>dfs.datanode.data.dir</name>
    <value>file:///home/zkpk/hadoopdata</value>
</property>
</configuration>

mapred-site.xml

<?xml version="1.0"?>
<configuration>
<property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
</property>
<property>
    <name>mapreduce.jobhistory.address</name>
    <value>master:10020</value>
</property>
<property>
    <name>mapreduce.jobhistory.address</name>
    <value>master:19888</value>
</property>
</configuration>

yarn-site.xml

<?xml version="1.0"?>
<configuration>
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>master:18040</value>
    </property>
    <property>
        <name>yarn.resourcemanager.scheduler.address</name>
        <value>master:18030</value>
    </property>
    <property>
        <name>yarn.resourcemanager.resource-tracker.address</name>
        <value>master:18025</value>
    </property>
    <property>
        <name>yarn.resourcemanager.admin.address</name>
        <value>master:18141</value>
    </property>
    <property>
        <name>yarn.resourcemanager.webapp.address</name>
        <value>master:18088</value>
    </property>
</configuration>