notes.txt

# Installing CDH4 on a Single Linux Node in Pseudo-distributed Mode
# https://ccp.cloudera.com/display/CDH4DOC/Installing+CDH4+on+a+Single+Linux+Node+in+Pseudo-distributed+Mode

# Installing CDH4 with MRv1 on a Single Linux Node in Pseudo-distributed mode
# On Ubuntu and other Debian systems
nipra@lambda:Downloads$ wget -cv http://archive.cloudera.com/cdh4/one-click-install/precise/amd64/cdh4-repository_1.0_all.deb
nipra@lambda:Downloads$ sudo dpkg -i cdh4-repository_1.0_all.deb # Adds /etc/apt/sources.list.d/cloudera-cdh4.list ??
nipra@lambda:Downloads$ dpkg -L cdh4-repository                  # To view the files on Ubuntu systems

# Install CDH4
# For Ubuntu Precise systems
# nipra@lambda:~$ lsb_release -c
$ curl -s http://archive.cloudera.com/cdh4/ubuntu/precise/amd64/cdh/archive.key | sudo apt-key add -

# To view the files on Ubuntu systems
$ dpkg -L hadoop-0.20-conf-pseudo

# Step 1: Format the NameNode.
# Got the error: Error: JAVA_HOME is not set and could not be found.
# Even though ~/.bashrc has ``export JAVA_HOME=/usr/lib/jvm/jdk1.7.0''
# FIX: [ https://groups.google.com/a/cloudera.org/d/msg/cdh-user/x0KLPPHiibU/twracHL-Rd0J ]
# $ sudo visudo
# Add ``Defaults env_keep+=JAVA_HOME''
$ sudo -u hdfs hdfs namenode -format

# Step 2: Start HDFS
# http://localhost:50070/
$ for service in /etc/init.d/hadoop-hdfs-*
> do
> sudo $service start
> done

# Step 3: Create the /tmp Directory
$ sudo -u hdfs hadoop fs -mkdir /tmp
$ sudo -u hdfs hadoop fs -chmod -R 1777 /tmp

# Step 4: Create the MapReduce system directories
sudo -u hdfs hadoop fs -mkdir /var
sudo -u hdfs hadoop fs -mkdir /var/lib
sudo -u hdfs hadoop fs -mkdir /var/lib/hadoop-hdfs
sudo -u hdfs hadoop fs -mkdir /var/lib/hadoop-hdfs/cache
sudo -u hdfs hadoop fs -mkdir /var/lib/hadoop-hdfs/cache/mapred
sudo -u hdfs hadoop fs -mkdir /var/lib/hadoop-hdfs/cache/mapred/mapred
sudo -u hdfs hadoop fs -mkdir /var/lib/hadoop-hdfs/cache/mapred/mapred/staging
sudo -u hdfs hadoop fs -chmod 1777 /var/lib/hadoop-hdfs/cache/mapred/mapred/staging
sudo -u hdfs hadoop fs -chown -R mapred /var/lib/hadoop-hdfs/cache/mapred

# Step 5: Verify the HDFS File Structure
$ sudo -u hdfs hadoop fs -ls -R /

# Step 6: Start MapReduce
# http://localhost:50030/
for service in /etc/init.d/hadoop-0.20-mapreduce-*
> do
> sudo $service start
> done

# Step 7: Create User Directories
$ sudo -u hdfs hadoop fs -mkdir  /user/<user>
$ sudo -u hdfs hadoop fs -chown <user> /user/<user>
where <user> is the Linux username of each user.

sudo -u hdfs hadoop fs -mkdir /user/$USER
sudo -u hdfs hadoop fs -chown $USER /user/$USER

# For stopping daemons
$ for service in /etc/init.d/hadoop-hdfs-* /etc/init.d/hadoop-0.20-mapreduce-*
> do
> sudo $service stop
> done

# HBase
nipra@lambda:~$ sudo apt-get install hbase
nipra@lambda:~$ sudo apt-get install hbase-master
nipra@lambda:~$ sudo jps
nipra@lambda:~$ sudo /etc/init.d/hbase-master stop

# To enable pseudo-distributed mode, you must first make some configuration
# changes. Open /etc/hbase/conf/hbase-site.xml
<configuration>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
  <name>hbase.rootdir</name>
  <value>hdfs://localhost:8020/hbase</value>
</property>
</configuration>

# Creating the /hbase Directory in HDFS
$ sudo -u hdfs hadoop fs -mkdir /hbase
$ sudo -u hdfs hadoop fs -chown hbase /hbase

# Installing and Starting ZooKeeper Server
# Using config: /etc/zookeeper/conf/zoo.cfg
# ZooKeeper data directory is missing at /var/lib/zookeeper fix the path or run initialize
# invoke-rc.d: initscript zookeeper-server, action "start" failed.

sudo apt-get install zookeeper-server
nipra@lambda:~$ sudo /etc/init.d/zookeeper-server init
nipra@lambda:~$ sudo /etc/init.d/zookeeper-server start

nipra@lambda:~$ sudo /etc/init.d/hbase-master start

# To enable the HBase Region Server on Ubuntu and Debian systems
$ sudo apt-get install hbase-regionserver
http://localhost:60010/

# Installing and Starting the HBase Thrift Server
sudo apt-get install hbase-thrift
# Installing and Configuring REST
sudo apt-get install hbase-rest

# ~/bin/start-hadoop-all.sh
for service in /etc/init.d/hadoop-hdfs-* /etc/init.d/hadoop-0.20-mapreduce-*
do
    sudo $service start
done

# ~/bin/start-hbase-all.sh
for service in /etc/init.d/zookeeper-server /etc/init.d/hbase-master /etc/init.d/hbase-regionserver /etc/init.d/hbase-rest /etc/init.d/hbase-thrift
do
    sudo $service start
done

# ~/bin/stop-hbase-all.sh
for service in /etc/init.d/hbase-thrift /etc/init.d/hbase-rest /etc/init.d/hbase-regionserver /etc/init.d/hbase-master /etc/init.d/zookeeper-server
do
    sudo $service stop
done

# ~/bin/stop-hadoop-all.sh
for service in /etc/init.d/hadoop-0.20-mapreduce-* /etc/init.d/hadoop-hdfs-*
do
    sudo $service stop
done

# ~/bin/start-all.sh
~/bin/start-hadoop-all.sh
~/bin/start-hbase-all.sh

# ~/bin/stop-all.sh
~/bin/stop-hbase-all.sh
~/bin/stop-hadoop-all.sh