VMWare虚拟机集群搭建Hadoop with Hive

虚拟机下载，以及序列号 准备

VMware Workstation v11.1.0 https://download3.vmware.com/software/wkst/file/VMware-workstation-full-11.1.0-2496824.exe

key ：1F04Z-6D111-7Z029-AV0Q4-3AEH8

Linux操作系统Centos 6.6

CentOS-6.6-i386-minimal.iso

虚拟机网络参数：网络选择NAT,

vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

TYPE=Ethernet

UUID=166b95ca-b98b-446c-a68e-6022012e4a9a

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=none

IPADDR=192.168.32.168 ---宿主机器是 192.168.32.1

NETMASK=255.255.255.0

PREFIX=24

GATEWAY=192.168.32.1

DEFROUTE=yes

IPV4_FAILURE_FATAL=yes

IPV6INIT=no

NAME="System eth0"

HWADDR=00:0C:29:11:DE:CA

PEERDNS=yes

PEERROUTES=yes

USERCTL=NO

/etc/init.d/network restart

删除DNS

/etc/resolve.conf --- 注释所有项, 不然由于DNS无效会导致很多莫名其妙超时

添加Hosts

/etc/hosts

192.168.32.168 master
192.168.32.101 slave1
192.168.32.102 slave2
192.168.32.103 slave3

修改本机HostName:

/etc/sysconfig/network

NETWORKING=yes
HOSTNAME=master

创建hadoop用户，以及hdgrp组

groupadd hdgrp

useradd -g hdgrp hadoop

passwd hadoop Hd1234.

后续用hadoop用户去安装所有的软件

filezilla连接虚拟机传文件

sfpt://[email protected]

用root关闭防火墙

/etc/init.d/iptables stop 关闭防火墙

chkconfig iptables off 关闭开机启动

创建Hadoop,Hive的安装目录

/bdp/install 作为安装目录，不默认放到/usr下面, 不然可能有很多权限问题。

下载hadoop 2.2.0，以及hive-0.12.0解压到这个目录下

修改环境变量
/etc/profile
export JAVA_HOME=/bdp/install/jdk1.7.0_79
export HADOOP_HOME=/bdp/install/hadoop-2.2.0
export HIVE_HOME=/bdp/install/apache-hive-0.2.0-bin
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$HIVE_HOME/bin:$HIVE_HOME/sbin:$PATH

修改java home
export JAVA_HOME=/bdp/install/jdk1.7.0_79
vi /bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh
vi /bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh hadoop@slave1:/bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh hadoop@slave2:/bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh hadoop@slave3:/bdp/install/hadoop-2.2.0/etc/hadoop/hadoop-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh hadoop@slave3:/bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh hadoop@slave3:/bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh
scp /bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh hadoop@slave3:/bdp/install/hadoop-2.2.0/etc/hadoop/yarn-env.sh

Hadoop需要修改的配置文件

添加文件master
master

修改slaves文件
slave1
slave2
slave3

core-site.xml
<configuration>
    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://master:9000</value>
    </property>
    <property>
        <name>io.file.buffer.size</name>
        <value>131072</value>
    </property>
    <property>
        <name>hadoop.tmp.dir</name>
        <value>/bdp/tmp</value>
        <description>Abase for other temporary directories.</description>
    </property>
    <property>
        <name>hadoop.proxyuser.hduser.hosts</name>
        <value>*</value>
    </property>
    <property>
        <name>hadoop.proxyuser.hduser.groups</name>
        <value>*</value>
    </property>
</configuration>

hdfs-site.xml
<configuration>
    <property>
        <name>dfs.namenode.secondary.http-address</name>
        <value>master:9001</value>
    </property>
    <property>
        <name>dfs.namenode.name.dir</name>
        <value>/bdp/data/dfs/name</value>
    </property>
    <property>
        <name>dfs.datanode.data.dir</name>
        <value>/bdp/data/dfs/data</value>
    </property>
    <property>
        <name>dfs.replication</name>
        <value>3</value>
    </property>
    <property>
        <name>dfs.webhdfs.enabled</name>
        <value>true</value>
    </property>
</configuration>

mapred-site.xml
<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
    <property>
        <name>mapreduce.jobhistory.address</name>
        <value>master:10020</value>
    </property>
    <property>
        <name>mapreduce.jobhistory.webapp.address</name>
        <value>master:19888</value>
    </property>
</configuration>

yarn-site.xml
<configuration>
    <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
        <value>org.apache.hadoop.mapred.ShuffleHandler</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>master:8032</value>
    </property>
    <property>
        <name>yarn.resourcemanager.scheduler.address</name>
        <value>master:8030</value>
    </property>
    <property>
        <name>yarn.resourcemanager.resource-tracker.address</name>
        <value>master:8031</value>
    </property>
    <property>
        <name>yarn.resourcemanager.admin.address</name>
        <value>master:8033</value>
    </property>
     <property>
    <name>yarn.resourcemanager.webapp.address</name>
    <value>master:8088</value>
    </property>
</configuration>

克隆主机MAC查询修改

Master装完后，克隆作为Slave的ISO，会有虚拟机网卡问题，删除rule的第一行，同时在eth0里面修改mac地址

/etc/udev/rules.d/70-persistent-net.rules

101: 删除第一行，把第二行的eth1修改为eth0, 记录下mac: 00:0c:29:68:e7:8c

102: 删除第一行，把第二行的eth1修改为eth0, 记录下mac: 00:0c:29:ee:b0:07

103: 删除第一行，把第二行的eth1修改为eth0, 记录下mac: 00:0c:29:e5:be:7d

修改hostname /etc/sysconfig/network slave1 slave2 slave3

master,slave之间ssh相互认证

全部用hadoop登录，执行ssh-keygen -t rsa，3次回车

chmod 755 ~/. ssh

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

chmod 644 ~/.ssh/ authorized_keys

ssh slave1 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

ssh slave2 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

ssh slave3 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

scp ~/.ssh/authorized_keys slave1:~/.ssh/authorized_keys

scp ~/.ssh/authorized_keys slave2:~/.ssh/authorized_keys

scp ~/.ssh/authorized_keys slave3:~/.ssh/authorized_keys

格式化namenode：hdfs namenode –format
bin/hdfs namenode –format -clusterid clustername (集群的刷新：一定要记得加-clusterid n54)

dataNode 无法启动是配置过程中最常见的问题，主要原因是多次format namenode 造成namenode 和datanode的clusterID不一致。建议查看datanode上面的log信息。解决办法:修改每一个datanode上面的CID(位于dfs/data/current/VERSION文件夹中)使两者一致。

启动Hadoop:

start-dfs.sh start-yarn.sh

执行jps看结果master：

2763 ResourceManager
3007 Jps
1851 NameNode
2008 SecondaryNameNode

执行jps看结果slave:

1835 Jps
1739 NodeManager
1423 DataNode

查看集群状态：

hdfs dfsadmin -report

查看文件块组成：

hdfs fsck / -files -blocks

查看HDFS:
http://192.168.32.168:50070

查看RerouceManager调度:

http://192.168.32.168:8088

运行测试程序：

生成数据

echo 'bla bla' > test_in.dat

echo 'a b c ' >> test_in.dat

文件上传到Hadoop文件系统

hdfs dfs -mkdir /user/hadoop

hadoop fs -put ~/wordcount/wc-in/test_in.dat /user/hadoop/

执行自带的样例程序

hadoop jar $HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.2.0.jar wordcount /user/hadoop/test_in.dat /user/hadoop/test_out.dat

查看结果

fs -ls /user/hadoop/test_out.dat

hadoop fs -cat /user/hadoop/test_out.dat/part-r-00000

a       1
b       1
bla     2
c       1

Hive语句：

hive -e"show databases"

default

附：

hive使用derby作为元数据库找不到所创建表的原因

在不同的目录登录hive，derby的metastrore会建在不同的目录下，也就是说用的是不同的metastore，所以当然会找不到相应的元数据。

在hive提示符下显示DB的名字hive-site.xml：

hive.cli.prompt=true

VMWare虚拟机集群搭建Hadoop with Hive

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