Ubuntu下安装JDK，Scala，Hadoop

前言

还是有点问题，这有点不兼容。

安装虚拟机

VMware虚拟机安装Ubuntu（超详细图文教程）_vmware安装ubuntu-CSDN博客https://blog.csdn.net/qq_43374681/article/details/129248167Download Ubuntu Desktop | Download | Ubuntuhttps://ubuntu.com/download/desktop安装redhat虚拟机_怎么安装redhat的虚拟机-CSDN博客https://blog.csdn.net/weixin_64066303/article/details/130287039?spm=1001.2014.3001.5501有了前面安装红帽的经验，我相信Ubuntu的安装是得心应手了。

安装Java

Ubuntu下安装Java_ubuntu安装java-CSDN博客https://blog.csdn.net/JqlScala/article/details/133462691直接可以指令安装

更新所有软件包

sudo apt update

** 安装默认Java运行时环境（JRE）**

 sudo apt install default-jre

** 安装Java开发工具包（JDK）**

 sudo apt install default-jdk

** 验证是否安装成功**

root@feng-virtual-machine:~# java -version
openjdk version "11.0.22" 2024-01-16
OpenJDK Runtime Environment (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1)
OpenJDK 64-Bit Server VM (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1, mixed mode, sharing)

安装Scala

All Available Versions | The Scala Programming Language (scala-lang.org)https://www.scala-lang.org/download/all.html（Spark）学习进度十五（虚拟机（ubuntu）安装scala和使用） - 细胞何 - 博客园 (cnblogs.com)https://www.cnblogs.com/hwh000/p/12310651.html

然后按照他的步骤，解压和配置环境。

添加（/usr/local/scala是自己的安装路径）

export SCALA_HOME=/usr/local/scala
export PATH=${SCALA_HOME}/bin:$PATH

使环境变量生效

source /etc/profile

root@feng-virtual-machine:~# scala -version
Scala code runner version 2.11.8 -- Copyright 2002-2016, LAMP/EPFL

但是结果出现了

root@feng-virtual-machine:/usr/local/scala# ./bin/scala
Exception in thread "main" java.lang.NoClassDefFoundError: javax/script/Compilable
        at scala.tools.nsc.interpreter.ILoop.createInterpreter(ILoop.scala:118)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:911)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
        at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
        at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)
        at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)

./bin/scala出错（Exception in thread “main“java. lang . NoClassDefFoundError: javax/script/Compilable）_exception in thread "main" java.lang.noclassdeffou-CSDN博客https://blog.csdn.net/weixin_52350007/article/details/120569898**推测是版本不兼容的问题**，然后我找到了一个选择版本的

JDK Compatibility | Scala Documentation (scala-lang.org)https://docs.scala-lang.org/overviews/jdk-compatibility/overview.html![](https://img-blog.csdnimg.cn/direct/952054b968f14eeab081dc02aade1e00.png)

因为JDK显示是11，之后我安装了2.11.12版本的Scala还是失败了，然后安装3.0.0的没有明显的下载文件，只有一个GitHub的地址。

所以我选择下载2.13.0的版本。

按照同样的方法结果又可以了。

root@feng-virtual-machine:/usr/local/scala/bin# scala
Welcome to Scala 2.13.0 (OpenJDK 64-Bit Server VM, Java 11.0.22).
Type in expressions for evaluation. Or try :help.
scala> println("Hello World!")
Hello World!
scala>

虽然是出现了一个警告，但是还是可以运行。

root@feng-virtual-machine:~# cd /usr/local/scala
root@feng-virtual-machine:/usr/local/scala# sudo mkdir mycode
root@feng-virtual-machine:/usr/local/scala# cd ./mycode
root@feng-virtual-machine:/usr/local/scala/mycode# ls
root@feng-virtual-machine:/usr/local/scala/mycode# sudo vim HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# ls
HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
warning: there was one deprecation warning (since 2.13.0); re-run with -deprecation for details
one warning found
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scala
object HelloWorld{
  def main(args: Array[String]){
    println("Hello World!")
  }
}
root@feng-virtual-machine:/usr/local/scala/mycode#

按要求加上deprecation参数，显示该语法被弃用了。

root@feng-virtual-machine:/usr/local/scala/mycode# scalac -deprecation HelloWorld.scala
HelloWorld.scala:3: warning: procedure syntax is deprecated: instead, add `: Unit =` to explicitly declare `main`'s return type
  def main(args: Array[String]){
                               ^
one warning found

按照要求修改之后就可以了,添加 :Unit=

root@feng-virtual-machine:/usr/local/scala/mycode# scalac HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# cat HelloWorld.scala
object HelloWorld{
  def main(args: Array[String]): Unit={
    println("Hello World!")
  }
}
root@feng-virtual-machine:/usr/local/scala/mycode# ls
'HelloWorld$.class'   HelloWorld.class   HelloWorld.scala
root@feng-virtual-machine:/usr/local/scala/mycode# scala -classpath . HelloWorld
Hello World!
root@feng-virtual-machine:/usr/local/scala/mycode#

FinalShell

FinalShell官网 (hostbuf.com)https://www.hostbuf.com/这里还有一个软件，感兴趣的小伙伴可以尝试一下，在windows系统下连接Linux的虚拟机。

其中“名称”是自己起，“主机”是用ifconfig指令查看，“端口”默认是22，认证是root，密码就是root的密码。密码不知道可以设置一下。

【ubuntu】设置root用户密码_ubuntu设置root用户密码-CSDN博客https://blog.csdn.net/weixin_43500200/article/details/131118075**我的是inet 192.168.92.130**

root@feng-virtual-machine:~# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.92.130  netmask 255.255.255.0  broadcast 192.168.92.255
        inet6 fe80::5c97:a5d8:e86f:ce76  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:5f:3c:62  txqueuelen 1000  (以太网)
        RX packets 279948  bytes 161217845 (161.2 MB)
        RX errors 42  dropped 42  overruns 0  frame 0
        TX packets 385434  bytes 102925217 (102.9 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2000  
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (本地环回)
        RX packets 7077  bytes 854481 (854.4 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 7077  bytes 854481 (854.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

当然输入密码的时候，密码不会回显。

root@feng-virtual-machine:~# sudo passwd root
新的密码： 
重新输入新的密码： 
passwd：已成功更新密码
root@feng-virtual-machine:~#

补：

** 决定还是安装新版的Scala，JDK还是17，Scala选择了3.3.3.**

Java Downloads | Oraclehttps://www.oracle.com/java/technologies/downloads/#java17

# sudo dpkg -i jdk-17_linux-x64_bin.deb

# java -version
java version "17.0.10" 2024-01-16 LTS
Java(TM) SE Runtime Environment (build 17.0.10+11-LTS-240)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.10+11-LTS-240, mixed mode, sharing)
root@feng-virtual-machine:~#

然后使用了Scala，结果报错了。

scala> println("hello world")
java.io.IOError: java.lang.RuntimeException: /packages cannot be represented as URI
        at java.base/jdk.internal.jrtfs.JrtPath.toUri(JrtPath.java:175)
        at scala.tools.nsc.classpath.JrtClassPath.asURLs(DirectoryClassPath.scala:216)
        at scala.tools.nsc.classpath.AggregateClassPath.$anonfun$asURLs$1(AggregateClassPath.scala:63)
        at scala.collection.StrictOptimizedIterableOps.flatMap(StrictOptimizedIterableOps.scala:118)
        at scala.collection.StrictOptimizedIterableOps.flatMap$(StrictOptimizedIterableOps.scala:105)
        at scala.collection.immutable.Vector.flatMap(Vector.scala:113)
        at scala.tools.nsc.classpath.AggregateClassPath.asURLs(AggregateClassPath.scala:63)
        at scala.tools.nsc.interpreter.IMain.compilerClasspath(IMain.scala:93)
        at scala.tools.nsc.interpreter.IMain.makeClassLoader(IMain.scala:352)
        at scala.tools.nsc.interpreter.IMain.ensureClassLoader(IMain.scala:275)
        at scala.tools.nsc.interpreter.IMain.classLoader(IMain.scala:278)
        at scala.tools.nsc.interpreter.IMain.runtimeMirror$lzycompute(IMain.scala:168)
        at scala.tools.nsc.interpreter.IMain.runtimeMirror(IMain.scala:168)
        at scala.tools.nsc.interpreter.IMain.$anonfun$getModuleIfDefined$1(IMain.scala:177)
        at scala.tools.nsc.interpreter.IMain.getModuleIfDefined(IMain.scala:170)
        at scala.tools.nsc.interpreter.IMain.readRootPath(IMain.scala:289)
        at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.resolvePathToSymbol(IMain.scala:662)
        at scala.tools.nsc.interpreter.IMain$Request.resultSymbol$lzycompute(IMain.scala:919)
        at scala.tools.nsc.interpreter.IMain$Request.resultSymbol(IMain.scala:918)
        at scala.tools.nsc.interpreter.IMain$Request.typeOf$lzycompute(IMain.scala:930)
        at scala.tools.nsc.interpreter.IMain$Request.typeOf(IMain.scala:935)
        at scala.tools.nsc.interpreter.IMain$Request.compile(IMain.scala:897)
        at scala.tools.nsc.interpreter.IMain.compile(IMain.scala:493)
        at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:487)
        at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:470)
        at scala.tools.nsc.interpreter.shell.ILoop.interpretStartingWith(ILoop.scala:930)
        at scala.tools.nsc.interpreter.shell.ILoop.command(ILoop.scala:787)
        at scala.tools.nsc.interpreter.shell.ILoop.processLine(ILoop.scala:462)
        at scala.tools.nsc.interpreter.shell.ILoop.loop(ILoop.scala:485)
        at scala.tools.nsc.interpreter.shell.ILoop.run(ILoop.scala:1019)
        at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:87)
        at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:91)
        at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:102)
        at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:107)
        at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Caused by: java.lang.RuntimeException: /packages cannot be represented as URI
        ... 35 more
That entry seems to have slain the compiler.  Shall I replay
your session? I can re-run each line except the last one.
[y/n]

于是按照前面的要求下载的3.3.3版本的Scala。

Release 3.3.3 · lampepfl/dotty (github.com)https://github.com/lampepfl/dotty/releases/tag/3.3.3![](https://img-blog.csdnimg.cn/direct/618e6db040f44aaabf4d00effd4ee401.png)

# sudo tar -zxvf scala3-3.3.3.tar.gz -C /usr/local

# scala -version
Scala code runner version 3.3.3 -- Copyright 2002-2024, LAMP/EPFL

scala> println("hello world")
hello world

重新安装固定版本

JDK1.7.0

Java Archive Downloads - Java SE 7 (oracle.com)

如何在UBUNTU中卸载 OpenJDK，安装 Oracle JDK 17 - 生物信息刘博 - 博客园 (cnblogs.com)

列出系统上已安装的 Java 软件包

dpkg --list | grep -Ei "jdk|jre"

**卸载所有 OpenJDK 版本 **

sudo apt-get remove *openjdk*

清理系统上已卸载的软件包和其配置文件

sudo apt-get autoremove

**创建一个新的 Java 安装目录 **

mkdir /usr/lib/jvm

将下载的安装包移动到该目录并解压缩（保证此时的目录下有jdk-7u80-linux-x64.tar.gz这个文件)

mv jdk-7u80-linux-x64.tar.gz /usr/lib/jvm

cd /usr/lib/jvm

tar zxvf jdk-7u80-linux-x64.tar.gz

设置 JAVA_HOME 环境变量。打开 /etc/profile 文件

vim /etc/profile

在文件最后添加以下内容（jdk1.7.0_80这个不确定的话可以进入jvm目录查看)

export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_80
export PATH=$JAVA_HOME/bin:$PATH

cd /usr/lib/jvm
ls

执行以下命令使更改生效

source /etc/profile

**验证 Java 是否已经成功安装 **

 java -version

root@feng-virtual-machine:/usr/lib/jvm# java -version
java version "1.7.0_80"
Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

Scala2.7.7

Scala 2.13.13 | The Scala Programming Language (scala-lang.org)

Scala 2.7.7.final | The Scala Programming Language (scala-lang.org)

按照前面的方法解压就行

移动压缩包到安装目录并解压(保证此时的目录下有scala-2.7.7.final.tgz这个文件)

mv scala-2.7.7.final.tgz /usr/local

cd /usr/local

ls

tar zxvf scala-2.7.7.final.tgz

** 更名为scala目录，因为前面配置的环境变量就是这个，这样就不用重新配置了**

 mv scala-2.7.7.final scala

** 验证Scala已经安装成功**

root@feng-virtual-machine:/usr/local# scala
Welcome to Scala version 2.7.7.final (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_80).
Type in expressions to have them evaluated.
Type :help for more information.

Hodoop2.10.2

Apache Download Mirrors

ubuntu安装hodoop详细步骤_ubuntu安装hadoop-CSDN博客

将直接解压出来到/usr/local目录下(保证此时的目录下有hadoop-2.10.2.tar.gz文件)

tar -zxvf hadoop-2.10.2.tar.gz -C /usr/local

**进入/usr/local目录并更名 **

cd /usr/local

mv hadoop-2.10.2 hadoop

查看Hadoop版本

cd hadoop

root@feng-virtual-machine:/usr/local/hadoop# ./bin/hadoop version
Hadoop 2.10.2
Subversion Unknown -r 965fd380006fa78b2315668fbc7eb432e1d8200f
Compiled by ubuntu on 2022-05-24T22:35Z
Compiled with protoc 2.5.0
From source with checksum d3ab737f7788f05d467784f0a86573fe
This command was run using /usr/local/hadoop/share/hadoop/common/hadoop-common-2.10.2.jar

新建input目录(到这里我就不知道是干嘛了)

mkdir input

将配置文件复制到input目录下

cp ./etc/hadoop/*.xml ./input

运行代码grep实例

 
./bin/hadoop jar ./share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar grep ./input ./output 'dfs[a-z.]+'

执行以下命令查看输出数据

root@feng-virtual-machine:/usr/local/hadoop# cat ./output/*
1       dfsadmin

hadoop伪分布式安装

修改core-site.xml 文件

vim ./etc/hadoop/core-site.xml

将代码添加到<confoguration>中间，然后保存退出

    <property>
        <name>hadoop.tmp.dir</name>
<value>file:/usr/local/hadoop/tmp</value>
        <description>Abase for othertemporary directories.</description>
    </property>
    <property>
        <name>fs.defaultFS</name>
<value>hdfs://localhost:9000</value>
    </property>

修改配置hdfs-site.xml文件

vim ./etc/hadoop/hdfs-site.xml

将下面这些代码添加到<confoguration>中间，然后保存退出

    <property>
        <name>dfs.replication</name>
        <value>1</value>
    </property>
    <property>
        <name>dfs.namenode.name.dir</name>
        <value>file:/usr/local/hadoop/tmp/dfs/name</value>
    </property>
    <property>
        <name>dfs.datanode.data.dir</name>
        <value>file:/usr/local/hadoop/tmp/dfs/data</value>
    </property>

**完成之后执行初始化命令 **

./bin/hdfs namenode -format

文件系统初始化成功后，启动HDFS

./sbin/start-dfs.sh

输入jps查看所有的java进程

jps

安装流程是这样的，就是有时候报错的莫名其妙的，最后我的版本是这些。

这个安装没成功

最后是完全按照下面的链接安装的，唯一要注意的就是要设置成ssh免密登录。

ubuntu安装hodoop详细步骤_ubuntu安装hadoop-CSDN博客https://blog.csdn.net/2301_77603488/article/details/132909277

标签： ubuntu 运维 scala

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Ubuntu下安装JDK，Scala，Hadoop

前言

安装虚拟机

安装Java

安装Scala

FinalShell

重新安装固定版本

JDK1.7.0

Scala2.7.7

Hodoop2.10.2

这个安装没成功

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