NOTE: linux server username / password: root / lijian

1. Prepare the Linux environment
VMware 1.0 Click the shortcut, right-open the location of the files -> Double-click vmnetcfg.exe -> VMnet1 host-only -> Modify subnet ip settings segments: 192.168.8.0 Subnet Mask: 255.255.255.0 -> apply -> ok
Back windows -> Open Network and Sharing Center -> Change Adapter Settings -> Right VMnet1 -> Properties -> Double-click IPv4 -> Set windows of IP: 192.168.8.100 Subnet Mask: 255.255.255.0 -> Click OK
On the virtualization software --My Computer -> Select Virtual Machine -> Right -> settings -> network adapter -> host only -> ok
1.1 modify the hostname

vim /etc/sysconfig/network

		NETWORKING=yes
		HOSTNAME=itcast01    ###

1.2 modify IP
In two ways:

The first: to be modified by the Linux graphical interface (highly recommended)
			Into the Linux graphical interface -> Right click on the top right of two small computer -> click Edit connections -> select the current network System eth0 -> click on the edit button -> select IPv4 -> method selected for the manual -> Click on the add button -> Add IP: 192.168.8.118 Subnet Mask: 255.255.255.0 gateway: 192.168.1.1 -> apply

		The second: the way modify the configuration file (program ape Cock wire dedicated)
			vim /etc/sysconfig/network-scripts/ifcfg-eth0

			DEVICE="eth0"
			BOOTPROTO="static"               ###
			HWADDR="00:0C:29:3C:BF:E7"
			IPV6INIT="yes"
			NM_CONTROLLED="yes"
			ONBOOT="yes"
			TYPE="Ethernet"
			UUID="ce22eeca-ecde-4536-8cc2-ef0dc36d4a8c"
			IPADDR="192.168.8.118"           ###
			NETMASK="255.255.255.0"          ###
			GATEWAY="192.168.8.1"            ###

1.3 modify the mapping between host names and IP

vim /etc/hosts

		192.168.8.118	itcast01

1.4 turn off the firewall

# Check firewall status
		service iptables status
		# Turn off the firewall
		service iptables stop
		# View firewall boot state
		chkconfig iptables --list
		# Turn off the firewall boot
		chkconfig iptables off

Restart Linux 1.5
reboot

2. Install the JDK
2.1 Upload

2.2 decompression jdk

# Create a folder
		mkdir /usr/java
		# Unzip
		tar -zxvf jdk-7u55-linux-i586.tar.gz -C /usr/java/

2.3 will be added to the java environment variable

vim /etc/profile
		# In the file add
		export JAVA_HOME=/usr/java/jdk1.7.0_55
		export PATH=$PATH:$JAVA_HOME/bin

		# Refresh configuration
		source /etc/profile

3. Install hadoop2.4.1
Note: hadoop2.x configuration file $ HADOOP_HOME / etc / hadoop
Pseudo-distributed configuration files need to be modified 5
3.1 Configuration hadoop
First:

hadoop-env.sh
		vim hadoop-env.sh
		# Line 27
		export JAVA_HOME=/usr/java/jdk1.7.0_65

the second:

core-site.xml
		<! - developed HDFS boss (NameNode) address ->
		<property>
			<name>fs.defaultFS</name>
			<value>hdfs://itcast01:9000</value>
		</property>
		<! - generated file when run hadoop designated storage directory ->
		<property>
			<name>hadoop.tmp.dir</name>
			<value>/itcast/hadoop-2.4.1/tmp</value>
        </property>

The third:

hdfs-site.xml
		<! - Specifies the number of copies of HDFS ->
		<property>
			<name>dfs.replication</name>
			<value>1</value>
        </property>

the fourth:

mapred-site.xml (mv mapred-site.xml.template mapred-site.xml)
		mv mapred-site.xml.template mapred-site.xml
		vim mapred-site.xml
		<-! Mr designated to run on yarn ->
		<property>
			<name>mapreduce.framework.name</name>
			<value>yarn</value>
        </property>

the fifth:

yarn-site.xml
		<! - Specifies the YARN boss (ResourceManager) address ->
		<property>
			<name>yarn.resourcemanager.hostname</name>
			<value>itcast01</value>
        </property>
		<-! Reducer way to get data ->
        <property>
			<name>yarn.nodemanager.aux-services</name>
			<value>mapreduce_shuffle</value>
        </property>

3.2 hadoop added to the environment variable

vim /etc/proflie
		export JAVA_HOME=/usr/java/jdk1.7.0_65
		export HADOOP_HOME=/itcast/hadoop-2.4.1
		export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin

	source /etc/profile

3.3 Formatting namenode (namenode is initialized)

hdfs namenode -format (hadoop namenode -format)

3.4 start hadoop

First start HDFS
		sbin/start-dfs.sh

		Restart YARN
		sbin/start-yarn.sh

3.5 Verify successful start

Use command to verify jps
		27408 NameNode
		28218 Jps
		27643 SecondaryNameNode
		28066 NodeManager
		27803 ResourceManager
		27512 DataNode

		http://192.168.8.118:50070 (HDFS Management Interface)
		http://192.168.8.118:50030 (MR Management Interface)

4. Configure ssh-free landing
# Ssh-free landing key generation

# Into my home directory
	cd ~/.ssh

	ssh-keygen -t rsa (four carriage return)
	After executing this command, two files are generated id_rsa (private), id_rsa.pub (public key)
	To copy the public key to avoid landing on the machine
	ssh-copy-id localhost