Master's NodeManager/DateNode is not started
No errors appear in the logs
Normal phenomenon, if you need to start in Master, you can use slaves
slave
in the file
localhost slave01 slave02
Master's ResourceManager is not started
- an examination
yarn-site.xml
- an examination
mapred-site.xml
DateNode of Slave is not started
Check
yarn-site.xml
yarn-site.xml<property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property>
Name node is in safe mode
Exit Safe Mode
hadoop dfsadmin -safemode leave
Reference configuration
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>