场景介绍:主机mac pro,安装了两台虚拟机,虚拟机均为Ubuntu系统
ubuntu系统配置jdk
1、到 Sun 的官网下载
http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
2、解压所下载的文件
[email protected]:~/software$ tar -zxvf jdk-7u79-linux-x64.tar.gz
3、配置java环境变量
[email protected]:~/software$ vi ~/.bashrc
跳至文件结束处
添加
export JAVA_HOME=/home/lixiaojiao/software/jdk1.7.0_79 export CLASS_PATH=.:$CLASS_PATH:$JAVA_HOME/lib export PATH=.:$PATH:$JAVA_HOME/bin
如图所示
保存并退出
4、配置完毕后并没有立即生效,需要使用下面命令后生效
[email protected]:~/software$ source ~/.bashrc
5、验证是否配置成功,出现下面效果证明成功
[email protected]:~/software$ java -version
mac机器配置hadoop2.6.1环境(java环境之前已经配置)
1、解压hadoop下载文件
lixiaojiaodeMacBook-Pro:zipFiles lixiaojiao$ tar -zxvf hadoop-2.6.1.tar.gz
2.本人将云计算相关的放入到目录中cloudcomputing,查看目录结构
3.设置ssh远程登录
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ssh-keygen -t rsa -P ""
执行以下命令
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
验证是否成功
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ssh localhost
出现下图,失败。。
原因是系统的ssh远程登录没有打开
首先在系统偏好设置->共享->远程登录,打开远程登录
再次执行命令
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ssh localhost
出现下图证明成功
3. 切换到etc目录中,查看配置文件
lixiaojiaodeMacBook-Pro:cloudcomputing lixiaojiao$ cd hadoop-2.6.1/etc/hadoop/
4.修改配置文件
切换到/Users/lixiaojiao/software/cloudcomputing/hadoop-2.6.1/etc/hadoop目录
(1) 配置core-site.xml
lixiaojiaodeMacBook-Pro:hadoop lixiaojiao$ vi core-site.xml
添加在
<configuration>
</configuration>中间增加如下配置
<property> <name>fs.default.name</name> <value>hdfs://localhost:9000</value> </property>
(2) 配置yarn-site.xml
增加如下配置
<property> <name>yarn.noCHdemanager.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>
(3) 创建和配置mapred-site.xml,将该目录中的mapred-site.xml.template复制为mapred-site.xml并添加配置如下
<property> <name>mapreduce.framework.name</name> <value>yarn</value> </property>
(4) 配置hdfs-site.xml,首先在
/Users/lixiaojiao/software/cloudcomputing/hadoop-2.6.1/中新建目录,hdfs/data和hdfs/name,并添加如下配置
<property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.namenode.name.dir</name> <value>file:/Users/lixiaojiao/software/cloudcomputing/hadoop-2.6.1/hdfs/name</value> </property> <property> <name>dfs.datanode.data.dir</name> <value>file:/Users/lixiaojiao/software/cloudcomputing/hadoop-2.6.1/hdfs/data</value> </property>
(5) 格式化hdfs
lixiaojiaodeMacBook-Pro:bin lixiaojiao$ ./hdfs namenode -format
出现下图
(6) 启动hadoop
切换到sbin目录下
lixiaojiaodeMacBook-Pro:bin lixiaojiao$ cd ../sbin/
执行
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ./start-dfs.sh
执行
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ./start-yarn.sh
浏览器打开 http://localhost:50070/,会看到hdfs管理页面
浏览器打开 http://localhost:8088/,会看到hadoop进程管理页面
在第六部运行
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ./start-dfs.sh
时候出现下面提示
computing/hadoop-2.6.1/logs/hadoop-lixiaojiao-secondarynamenode-lixiaojiaodeMacBook-Pro.local.out 2015-10-18 10:08:43.887 java[1871:37357] Unable to load realm info from SCDynamicStore 15/10/18 10:08:43 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable lixiaojiaodeMacBook-Pro:sbin lixiaojiao$
原因为官方提供的lib目录中.so文件是在32位系统下编译的,如果是但是本人的mac机器是64位系统,需要自己下载源码在64位上重新编译,由于本人下载源码尝试了很久也没成功,最终放弃了,下载了牛人编译好的64位打包程序,地址位http://yun.baidu.com/s/1c0rfIOo#dir/path=%252Fbuilder,并下载这个正常的32位hadoop程序包,http://www.aboutyun.com/thread-6658-1-1.html,下载成功后,将下载的64位build文件中的native覆盖掉lib目录下的native文件,并重新按照上面的部分进行配置。
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ./start-all.sh
当重新执行到上面的命令时候出现下面问题:
lixiaojiaodeMacBook-Pro:sbin lixiaojiao$ ./start-all.sh This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh 2015-10-19 21:18:29.414 java[5782:72819] Unable to load realm info from SCDynamicStore
按照网上牛人的做法还是不行,最后只有换jdk,重新安装jdk
#export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/
验证是否成功
创建input目录
lixiaojiaodeMacBook-Pro:hadoop-2.2.0 lixiaojiao$ hadoop fs -mkdir -p input
将本地文件上传到hdfs文件系统中
lixiaojiaodeMacBook-Pro:cloudcomputing lixiaojiao$ hadoop fs -copyFromLocal README.txt input
出现下面新问题
将fs.default.name中的IP地址改为127.0.0.1。
切换到share/hadoop/mapreduce目录中执行下面语句
hadoop jar hadoop-mapreduce-examples-2.2.0.jar wordcount input output
执行下面命令看是否生成output目录
hadoop fs -ls
执行下面命令查看具体结果
hadoop fs -cat
因此本人为了方便直接将配置好的hadoop文件copy到其他的Ubuntu系统中,直接使用scp命令,需要Ubuntu系统中开启ssh
lixiaojiaodeMacBook-Pro:cloudcomputing lixiaojiao$ scp -r hadoop-2.2.0 [email protected]:/home/lixiaojiao/software
lixiaojiaodeMacBook-Pro:cloudcomputing lixiaojiao$ scp -r hadoop-2.2.0 [email protected]:/home/lixiaojiao/software
然后通过执行之上的wordcount程序验证是否成功