【快速入门大数据】Hadoop分布式集群搭建

﹏ヽ暗。殇╰゛Y 2023-01-08 08:25 204阅读 0赞

### 文章目录 ###

*  配置三台虚拟机环境
 *  ssh免密登录
 *  JDK和Hadoop
 *  启动
 *  分布式节点下实战

# 配置三台虚拟机环境 #

复制三台虚拟机

#修改hostname
    vi /etc/hostname
    hadoop01
    
    #设置全局ip
    127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
    192.168.210.121 hadoop01
    192.168.210.122 hadoop02
    192.168.210.123 hadoop03
    
    
    #设置新的ip
    vi /etc/sysconfig/network-scripts/ifcfg-eno16777736
    hadoop01
    TYPE="Ethernet"
    BOOTPROTO="static"
    DEFROUTE="yes"
    IPV4_FAILURE_FATAL="no"
    IPV6INIT="yes"
    IPV6_AUTOCONF="yes"
    IPV6_DEFROUTE="yes"
    IPV6_FAILURE_FATAL="no"
    NAME="eno16777736"
    UUID="7490940a-d84f-4b04-b1dc-a00d63563bae"
    DEVICE="eno16777736"
    ONBOOT="yes"
    IPADDR="192.168.210.121"
    PREFIX="24"
    GATEWAY="192.168.210.2"
    DNS1="8.8.8.8"
    IPV6_PEERDNS="yes"
    IPV6_PEERROUTES="yes"
    IPV6_PRIVACY="no"

# ssh免密登录 #

ssh-keygen -t rsa
    一直回车，就会生成一个密钥
    
    将密钥拷贝给远程的主机：
    ssh-copy-id slave1
    
    连接远程主机：
    ssh slave1
    退回到本机：
    exit
    分别配置三台机器的免密登录，记得给本机也发一次密钥。

# JDK和Hadoop #

解压并配置环境变量

export JAVA_HOME=/root/software/jdk1.8.0_91
    export PATH=$JAVA_HOME/bin:$PATH
    export HADOOP_HOME=/root/software/hadoop-2.6.0-cdh5.7.0
    export PATH=$HADOOP_HOME/bin:$PATH

修改hadoop配置文件  
/root/software/hadoop-2.6.0-cdh5.7.0/etc/hadoop

vi hadoop-env.sh

export JAVA_HOME=/root/software/jdk1.8.0_91

vi core-site.xml （端口号也有配8020的）

<configuration>
        <property>
            <name>fs.defaultFS</name>
            <value>hdfs://hadoop01:9000</value>
        </property>

vi hdfs-site.xml 此时三台虚拟机

<configuration>
        <property>
            <name>dfs.namenode.name.dir</name>
            <value>/root/data/tmp/dfs</value>
        </property>
        <property>
            <name>dfs.datanode.data.dir</name>
            <value>/root/data/tmp/dfs/data</value>
        </property>
    </configuration>

vi yarn-site.xml

<property>
            <name>yarn.nodemanager.aux-services</name>
            <value>mapreduce_shuffle</value>
        </property>
        <property>
            <name>yarn.resourcemanager.hostname</name>
            <value>hadoop01</value>
        </property>

vi mapred-site.xml (单独复制模板)

<configuration>
        <property>
            <name>mapreduce.framework.name</name>
            <value>yarn</value>
        </property>
    </configuration>

vi slaves (从节点)

hadoop01
    hadoop02
    hadoop03

分发到hadoop02、hadoop03

scp -r hadoop-2.6.0-cdh5.7.0 hadoop03:$PWD
    注意hdfs的临时目录
    data]# mkdir tmp

# 启动 #

#格式化NNnamenode，只在虚拟机hadoop01
    /root/software/hadoop-2.6.0-cdh5.7.0/bin
    ./hdfs namenode -format
    
    #启动all
    /root/software/hadoop-2.6.0-cdh5.7.0/sbin
    ./start-all.sh

验证jps

hadoop01
    3193 NameNode
    3284 DataNode
    3464 SecondaryNameNode
    3705 NodeManager
    3610 ResourceManager
    
    hadoop02
    3352 NodeManager
    3257 DataNode
    
    hadoop03
    3352 NodeManager
    3257 DataNode

url验证  
hadoop  
http://hadoop01:50070  
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yarn  
http://hadoop01:8088/  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzQ2OTY4MA_size_16_color_FFFFFF_t_70 1]

# 分布式节点下实战 #

日志分析部署到分布式下  
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