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This article mainly introduces how to configure and start hdfs and yarn. It is very detailed and has a certain reference value. Friends who are interested must read it!

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The configuration file is under the $HADOOP_HOME/etc/hadoop/ directory. Hdfs and yarn need to be configured a total of five files:

1st: hadoop-env.sh export JAVA_HOME=/usr/java/jdk1.7.0_65 2nd: core-site.xml: fs.defaultFS hdfs://master:9000 hadoop.tmp.dir / home/hadoop/data/hadoop 3rd: hdfs-site.xml Hdfs-default.xml dfs.replication 1 4th: mapred-site.xml mv mapred-site.xml.template mapred-site.xml vim mapred-site.xml mapreduce.framework.name yarn 5th: yarn-site .xml yarn.resourcemanager.hostname master yarn.nodemanager.aux-services mapreduce_shuffle sixth: slaves file This file is used to indicate the machines on which the datanode process slave01slave02slave03 formats namenode is started

Hdfs namenode-format

Start hdfs

$HADOOP_HOME/sbin/start-dfs.sh

Start yarn

$HADOOP_HOME/sbin/start-yarn.sh

These are all the contents of the article "how to configure and start hdfs and yarn". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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