Step-by-step – Hadoop Ubuntu 18.04 Installation

Configuring

8. 8. Configuring Hadoop

   Now

   Edit Hadoop Configutation File
   To Setup Hadoop in Pseudo-Distributed mode with nano Editor:

   nano /usr/local/hadoop/conf/core-site.xml

   And Append:

   <?xml version="1.0"?>
   <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
   <configuration>
   <property>
   <name>hadoop.tmp.dir</name>
   <value>/usr/local/hadoop/tmp</value>
   </property>
   <property>
   <name>fs.default.name</name>
   <value>hdfs://localhost:8020</value>
   </property>
   </configuration>
   

   Next again:

   nano /usr/local/hadoop/conf/hdfs-site.xml

   And Append:

   <?xml version="1.0"?>
   <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
   <configuration>
   <property>
   <name>dfs.replication</name>
   <value>1</value>
   </property>
   <property>
   <!-- specify this so that running 'hdfs namenode -format'
   formats the right dir -->
   <name>dfs.name.dir</name>
   <value>/usr/local/hadoop/cache/hadoop/dfs/name</value>
   </property>
   </configuration>
   

   Next Make the Log4j Configuration:

   nano /usr/local/hadoop/conf/log4j.properties

   Simply Click and Drag Down to Select & Right-Click Copy, finally Append into:

   # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. you may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # Define some default values that can be overridden by system properties hadoop.root.logger=INFO,console hadoop.log.dir=. hadoop.log.file=hadoop.log # Define the root logger to the system property "hadoop.root.logger". log4j.rootLogger=${hadoop.root.logger}, EventCounter # Logging Threshold log4j.threshold=ALL # Null Appender log4j.appender.NullAppender=org.apache.log4j.varia.NullAppender # # Rolling File Appender - cap space usage at 5gb. # hadoop.log.maxfilesize=256MB hadoop.log.maxbackupindex=20 log4j.appender.RFA=org.apache.log4j.RollingFileAppender log4j.appender.RFA.File=${hadoop.log.dir}/${hadoop.log.file} log4j.appender.RFA.MaxFileSize=${hadoop.log.maxfilesize} log4j.appender.RFA.MaxBackupIndex=${hadoop.log.maxbackupindex} log4j.appender.RFA.layout=org.apache.log4j.PatternLayout # Pattern format: Date LogLevel LoggerName LogMessage log4j.appender.RFA.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n # Debugging Pattern format #log4j.appender.RFA.layout.ConversionPattern=%d{ISO8601} %-5p %c{2} (%F:%M(%L)) - %m%n # # Daily Rolling File Appender # log4j.appender.DRFA=org.apache.log4j.DailyRollingFileAppender log4j.appender.DRFA.File=${hadoop.log.dir}/${hadoop.log.file} # Rollover at midnight log4j.appender.DRFA.DatePattern=.yyyy-MM-dd log4j.appender.DRFA.layout=org.apache.log4j.PatternLayout # Pattern format: Date LogLevel LoggerName LogMessage log4j.appender.DRFA.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n # Debugging Pattern format #log4j.appender.DRFA.layout.ConversionPattern=%d{ISO8601} %-5p %c{2} (%F:%M(%L)) - %m%n # # console # Add "console" to rootlogger above if you want to use this # log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.target=System.err log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %m%n # # TaskLog Appender # #Default values hadoop.tasklog.taskid=null hadoop.tasklog.iscleanup=false hadoop.tasklog.noKeepSplits=4 hadoop.tasklog.totalLogFileSize=100 hadoop.tasklog.purgeLogSplits=true hadoop.tasklog.logsRetainHours=12 log4j.appender.TLA=org.apache.hadoop.mapred.TaskLogAppender log4j.appender.TLA.taskId=${hadoop.tasklog.taskid} log4j.appender.TLA.isCleanup=${hadoop.tasklog.iscleanup} log4j.appender.TLA.totalLogFileSize=${hadoop.tasklog.totalLogFileSize} log4j.appender.TLA.layout=org.apache.log4j.PatternLayout log4j.appender.TLA.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n # # HDFS block state change log from block manager # # Uncomment the following to suppress normal block state change # messages from BlockManager in NameNode. #log4j.logger.BlockStateChange=WARN # #Security appender # hadoop.security.logger=INFO,NullAppender hadoop.security.log.maxfilesize=256MB hadoop.security.log.maxbackupindex=20 log4j.category.SecurityLogger=${hadoop.security.logger} hadoop.security.log.file=SecurityAuth-${user.name}.audit log4j.appender.RFAS=org.apache.log4j.RollingFileAppender log4j.appender.RFAS.File=${hadoop.log.dir}/${hadoop.security.log.file} log4j.appender.RFAS.layout=org.apache.log4j.PatternLayout log4j.appender.RFAS.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n log4j.appender.RFAS.MaxFileSize=${hadoop.security.log.maxfilesize} log4j.appender.RFAS.MaxBackupIndex=${hadoop.security.log.maxbackupindex} # # Daily Rolling Security appender # log4j.appender.DRFAS=org.apache.log4j.DailyRollingFileAppender log4j.appender.DRFAS.File=${hadoop.log.dir}/${hadoop.security.log.file} log4j.appender.DRFAS.layout=org.apache.log4j.PatternLayout log4j.appender.DRFAS.layout.ConversionPattern=%d{ISO8601} %p %c: %m%n log4j.appender.DRFAS.DatePattern=.yyyy-MM-dd # # hadoop configuration logging # # Uncomment the following line to turn off configuration deprecation warnings. # log4j.logger.org.apache.hadoop.conf.Configuration.deprecation=WARN # # hdfs audit logging # hdfs.audit.logger=INFO,NullAppender hdfs.audit.log.maxfilesize=256MB hdfs.audit.log.maxbackupindex=20 log4j.logger.org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit=${hdfs.audit.logger} log4j.additivity.org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit=false log4j.appender.RFAAUDIT=org.apache.log4j.RollingFileAppender log4j.appender.RFAAUDIT.File=${hadoop.log.dir}/hdfs-audit.log log4j.appender.RFAAUDIT.layout=org.apache.log4j.PatternLayout log4j.appender.RFAAUDIT.layout.ConversionPattern=%d{ISO8601} %p %c{2}: %m%n log4j.appender.RFAAUDIT.MaxFileSize=${hdfs.audit.log.maxfilesize} log4j.appender.RFAAUDIT.MaxBackupIndex=${hdfs.audit.log.maxbackupindex} # # mapred audit logging # mapred.audit.logger=INFO,NullAppender mapred.audit.log.maxfilesize=256MB mapred.audit.log.maxbackupindex=20 log4j.logger.org.apache.hadoop.mapred.AuditLogger=${mapred.audit.logger} log4j.additivity.org.apache.hadoop.mapred.AuditLogger=false log4j.appender.MRAUDIT=org.apache.log4j.RollingFileAppender log4j.appender.MRAUDIT.File=${hadoop.log.dir}/mapred-audit.log log4j.appender.MRAUDIT.layout=org.apache.log4j.PatternLayout log4j.appender.MRAUDIT.layout.ConversionPattern=%d{ISO8601} %p %c{2}: %m%n log4j.appender.MRAUDIT.MaxFileSize=${mapred.audit.log.maxfilesize} log4j.appender.MRAUDIT.MaxBackupIndex=${mapred.audit.log.maxbackupindex} # Custom Logging levels #log4j.logger.org.apache.hadoop.mapred.JobTracker=DEBUG #log4j.logger.org.apache.hadoop.mapred.TaskTracker=DEBUG #log4j.logger.org.apache.hadoop.hdfs.server.namenode.FSNamesystem.audit=DEBUG # Jets3t library log4j.logger.org.jets3t.service.impl.rest.httpclient.RestS3Service=ERROR # AWS SDK & S3A File System log4j.logger.com.amazonaws=ERROR log4j.logger.com.amazonaws.http.AmazonHttpClient=ERROR log4j.logger.org.apache.hadoop.fs.s3a.S3AFileSystem=WARN # # Event Counter Appender # Sends counts of logging messages at different severity levels to Hadoop Metrics. # log4j.appender.EventCounter=org.apache.hadoop.log.metrics.EventCounter # # Job Summary Appender # # Use following logger to send summary to separate file defined by # hadoop.mapreduce.jobsummary.log.file : # hadoop.mapreduce.jobsummary.logger=INFO,JSA # hadoop.mapreduce.jobsummary.logger=${hadoop.root.logger} hadoop.mapreduce.jobsummary.log.file=hadoop-mapreduce.jobsummary.log hadoop.mapreduce.jobsummary.log.maxfilesize=256MB hadoop.mapreduce.jobsummary.log.maxbackupindex=20 log4j.appender.JSA=org.apache.log4j.RollingFileAppender log4j.appender.JSA.File=${hadoop.log.dir}/${hadoop.mapreduce.jobsummary.log.file} log4j.appender.JSA.MaxFileSize=${hadoop.mapreduce.jobsummary.log.maxfilesize} log4j.appender.JSA.MaxBackupIndex=${hadoop.mapreduce.jobsummary.log.maxbackupindex} log4j.appender.JSA.layout=org.apache.log4j.PatternLayout log4j.appender.JSA.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}: %m%n log4j.logger.org.apache.hadoop.mapred.JobInProgress$JobSummary=${hadoop.mapreduce.jobsummary.logger} log4j.additivity.org.apache.hadoop.mapred.JobInProgress$JobSummary=false # # Yarn ResourceManager Application Summary Log # # Set the ResourceManager summary log filename yarn.server.resourcemanager.appsummary.log.file=rm-appsummary.log # Set the ResourceManager summary log level and appender yarn.server.resourcemanager.appsummary.logger=${hadoop.root.logger} #yarn.server.resourcemanager.appsummary.logger=INFO,RMSUMMARY # To enable AppSummaryLogging for the RM, # set yarn.server.resourcemanager.appsummary.logger to # ,RMSUMMARY in hadoop-env.sh # Appender for ResourceManager Application Summary Log # Requires the following properties to be set # - hadoop.log.dir (Hadoop Log directory) # - yarn.server.resourcemanager.appsummary.log.file (resource manager app summary log filename) # - yarn.server.resourcemanager.appsummary.logger (resource manager app summary log level and appender) log4j.logger.org.apache.hadoop.yarn.server.resourcemanager.RMAppManager$ApplicationSummary=${yarn.server.resourcemanager.appsummary.logger} log4j.additivity.org.apache.hadoop.yarn.server.resourcemanager.RMAppManager$ApplicationSummary=false log4j.appender.RMSUMMARY=org.apache.log4j.RollingFileAppender log4j.appender.RMSUMMARY.File=${hadoop.log.dir}/${yarn.server.resourcemanager.appsummary.log.file} log4j.appender.RMSUMMARY.MaxFileSize=256MB log4j.appender.RMSUMMARY.MaxBackupIndex=20 log4j.appender.RMSUMMARY.layout=org.apache.log4j.PatternLayout log4j.appender.RMSUMMARY.layout.ConversionPattern=%d{ISO8601} %p %c{2}: %m%n 

   Last:

   nano /usr/local/hadoop/conf/mapred-site.xml

   And Append:

   <?xml version="1.0"?> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> <configuration> <property> <name>mapred.job.tracker</name> <value>localhost:8021</value> </property> </configuration> 

9. 9. Setting Up Environment

   Again SetUp Local Path & Environment
   Exit from SuperUser to the normal User:

   exit

   Then Change to the Home directory:

   cd 

   And Edit the bash Config file:

   nano .bashrc

   So Inserts:

   HADOOP_HOME=/usr/local/hadoop/nexport PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin/nexport JAVA_HOME=/usr/lib/jvm/<oracleJdkVersion>

   Replace <oracleJdkVersion> with the Correct JDK Release you can find running:

   update-alternatives --config java

   And for the Java Compiler instead:

   sudo update-alternatives --config javac

   But Skip this if already Made JAVA_HOME Setup during JDK Installation…
   Finally, to Load the New Setup simply:

   bash