Data Nodes not Appearing in Hadoop Cluster - hadoop

Question

I am trying to create a hadoop cluster. `hdfs' is starting normally and I am lso able to access it through the web interface. But, data nodes are not showing. Here is the result I got by running jps command.
node1 is the master-node. But running `yarn node -list' is not returning the list of worker nodes.
hdfs and yarn seem to have started normally. Here is the response from start-dfs.sh and start-yarn.sh.
What should I do?
Here is the xml file for yarn-site.xml. The memory for the nodes is 2GB each.
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>yarn.acl.enable</name>
<value>0</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>node1</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<!-- Resource-->
<property>
<name>yarn.nodemanager.resource.memory-mb</name>
<value>1536</value>
</property>
<property>
<name>yarn.scheduler.maximum-allocation-mb</name>
<value>1536</value>
</property>
<property>
<name>yarn.scheduler.minimum-allocation-mb</name>
<value>128</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
</configuration>
I have tried to restart services using stop-all.sh then restarted them. Any advice?

Answer 1

The problem was on the yarn-site.xml file. I should have added the resource manager address. If node1 is the name of the master node, then:
<property>
<name>yarn.resourcemanager.hostname</name>
<value>node1</value>
</property>
<property>
<name>yarn.resourcemanager.address</name>
<value>node1:8032</value>
</property>