hadoop-集群的安装部署

1.上传解压hadoop压缩文件

2.配置hadoop的环境变量

3.查看Hadoop支持的压缩方式以及本地库

进入hadoop安装目录的bin里面执行以下命令 hadoop checknative

安装    yum -y install openssl-devel

下载完毕后,检查

4.修改hadoop的核心配置文件

(1)修改core-site.xml:     

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:  vim core-site.xml

<configuration>

<property>

<name>fs.defaultFS</name>

<value>hdfs://node01:8020</value>

</property>

<property>

<name>hadoop.tmp.dir</name>

<value>/export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/tempDatas</value>

</property>

<!--  缓冲区大小，实际工作中根据服务器性能动态调整 -->

<property>

<name>io.file.buffer.size</name>

<value>4096</value>

</property>

<!--  开启hdfs的垃圾桶机制，删除掉的数据可以从垃圾桶中回收，单位分钟 -->

<property>

<name>fs.trash.interval</name>

<value>10080</value>

</property>

</configuration>

(2)修改hdfs-site.xml

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:   vim hdfs-site.xml

<configuration>

<!-- NameNode存储元数据信息的路径，实际工作中，一般先确定磁盘的挂载目录，然后多个目录用，进行分割   -->

<!--   集群动态上下线

<property>

<name>dfs.hosts</name>

<value>/export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop/accept_host</value>

</property>

<property>

<name>dfs.hosts.exclude</name>

<value>/export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop/deny_host</value>

</property>

 -->

 <property>

<name>dfs.namenode.secondary.http-address</name>

<value>node01:50090</value>

</property>

<property>

<name>dfs.namenode.http-address</name>

<value>node01:50070</value>

</property>

<property>

<name>dfs.namenode.name.dir</name>

<value>file:///export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/namenodeDatas</value>

</property>

<!--  定义dataNode数据存储的节点位置，实际工作中，一般先确定磁盘的挂载目录，然后多个目录用，进行分割  -->

<property>

<name>dfs.datanode.data.dir</name>

<value>file:///export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/datanodeDatas</value>

</property>

<property>

<name>dfs.namenode.edits.dir</name>

<value>file:///export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/nn/edits</value>

</property>

<property>

<name>dfs.namenode.checkpoint.dir</name>

<value>file:///export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/snn/name</value>

</property>

<property>

<name>dfs.namenode.checkpoint.edits.dir</name>

<value>file:///export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/nn/snn/edits</value>

</property>

<property>

<name>dfs.replication</name>

<value>2</value>

</property>

<property>

<name>dfs.permissions</name>

<value>false</value>

</property>

<property>

<name>dfs.blocksize</name>

<value>134217728</value>

</property>

</configuration>

(3)修改Hadoop-env.sh

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:  vim hadoop-env.sh

export JAVA_HOME=/export/servers/jdk1.8.0_141

(4)修改mapred-site.xml

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:vim mapred-site.xml

<configuration>

<property>

<name>mapreduce.framework.name</name>

<value>yarn</value>

</property>

 

<property>

<name>mapreduce.job.ubertask.enable</name>

<value>true</value>

</property>

 

<property>

<name>mapreduce.jobhistory.address</name>

<value>node01:10020</value>

</property>

 

<property>

<name>mapreduce.jobhistory.webapp.address</name>

<value>node01:19888</value>

</property>

</configuration>

(5)修改yarn-site.xml

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:vim yarn-site.xml

<configuration>

<property>

<name>yarn.resourcemanager.hostname</name>

<value>node01</value>

</property>

<property>

<name>yarn.nodemanager.aux-services</name>

<value>mapreduce_shuffle</value>

</property>

</configuration>

(6)修改slaves文件

在cd /export/servers/hadoop-2.6.0-cdh5.14.0/etc/hadoop目录下

执行:vim slaves

node01

node02

node03

(7)建文件存放目录

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/tempDatas

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/namenodeDatas

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/datanodeDatas

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/nn/edits

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/snn/name

mkdir -p /export/servers/hadoop-2.6.0-cdh5.14.0/hadoopDatas/dfs/nn/snn/edits

(8)分发到其他节点

scp -r hadoop-2.6.0-cdh5.14.0 node02:$PWD scp -r hadoop-2.6.0-cdh5.14.0 node03:$PWD(9)配置其他节点的hadoop的环境变量

export HADOOP_HOME=/export/servers/hadoop-2.6.0-cdh5.14.0

export PATH=:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH

(10)格式化集群

bin/hdfs namenode  

(11)一键启动集群

sbin/start-all.sh

正常启动后:

正常关闭:

(12)浏览器查看启动页面

192.168.100.241:50070

yarn集群访问地址：  192.168.100.241:8088/cluster