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taichirain 翻译中
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5 great Raspberry Pi projects for the classroom
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5 伟大的树莓派项目教室
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================================================================================
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Image by : opensource.com
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图片来源 : opensource.com
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### 1. Minecraft Pi ###
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@ -93,4 +97,4 @@ via: https://opensource.com/education/15/12/5-great-raspberry-pi-projects-classr
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[11]:https://www.piborg.org/4borg
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[12]:https://www.piborg.org/diddyborg
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[13]:https://www.piborg.org/doodleborg
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[14]:http://camjam.me/?page_id=1035#worksheets
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[14]:http://camjam.me/?page_id=1035#worksheets
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taichirain 翻译中
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How to Configure Apache Solr on Ubuntu 14 / 15
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如何在Ubuntu 14/15上配置Apache Solr
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================================================================================
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Hello and welcome to our today's article on Apache Solr. The brief description about Apache Solr is that it is an Open Source most famous search platform with Apache Lucene at the back end for Web sites that enables you to easily create search engines which searches websites, databases and files. It can index and search multiple sites and return recommendations for related contents based on the searched text.
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大家好,欢迎来阅读我们今天Apache Solr的文章.Apache Solr是一个运行在网站后台的目前最热门的一个搜索引擎，基于Apache Lucene，能让你很容易的创建搜索引擎，数据库，文件。它能够索引和搜索多个网站并根据搜索文本的相关内容返回搜索建议.
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Solr works with HTTP Extensible Markup Language (XML) that offers application program interfaces (APIs) for Javascript Object Notation, Python, and Ruby. According to the Apache Lucene Project, Solr offers capabilities that have made it popular with administrators including it many featuring like:
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- Full Text Search
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- Faceted Navigation
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- Snippet generation/highting
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- Spell Suggestion/Auto complete
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- Custom document ranking/ordering
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Solr工作在可扩展标记语言(XML),并可以为JSON、Python和Ruby提供应用程序接口(APIs)。根据Apache Lucene项目，Solr提供了非常多的功能，让它很受管理员们的欢迎：
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- 全文检索
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- 分面导航
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- 拼写建议/自动完成
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- 自定义文档排序/排列
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#### Prerequisites: ####
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#### 前提条件: ####
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在一个使用Ubuntu 14/15最小化安装包的系统上，你仅仅需要少量的准备，就开始安装 Apache Solor.
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On a fresh Linux Ubuntu 14/15 with minimal packages installed, you only have to take care of few prerequisites in order to install Apache Solr.
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### 1)System Update 系统更新###
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### 1)System Update ###
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在所有的安装步骤以及使用Solor过程中使用一个具有sudo权限的非root用户登录Ubuntu server。
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Login to your Ubuntu server with a non-root sudo user that will be used to perform all the steps to install and use Solr.
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After successful login, issue the following command to update your system with latest updates and patches.
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登录成功后，使用下面的命令，升级你的系统到最新的更新及补丁
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$ sudo apt-get update
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### 2) JRE Setup ###
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### 2) JRE Setup 安装JRE###
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要安装Solr，首先需要安装JRE(Java Runtime Environment)作为基础环境，因为solr和tomcat都是基于Java.所以，我们需要安装最新版的Java和配置Java本地环境.
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The Solr setup needs Java Runtime Environment to be installed on the system as its basic requirement because solr and tomcat both are the Java based applications. So, we need to install and configure its home environment with latest Java.
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To install the latest version on Oracle Java 8, we need to install Python Software Properties using the below command.
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为了安装最新版的Java 8,我们需要安装Python Software Properties工具包
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$ sudo apt-get install python-software-properties
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Upon completion, run the setup its the repository for the latest version of Java 8.
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完成后，配置最新版Java 8的仓库
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$ sudo add-apt-repository ppa:webupd8team/java
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Now you are able to install the latest version of Oracle Java 8 with 'wget' by issuing the below commands to update the packages source list and then to install Java.
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使用下面的命令更新源,然后安装java，然后使用'wget'安装Oracle Jave 8的最新版本
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$ sudo apt-get update
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@ -44,64 +41,63 @@ Now you are able to install the latest version of Oracle Java 8 with 'wget' by i
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$ sudo apt-get install oracle-java8-installer
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Accept the Oracle Binary Code License Agreement for the Java SE Platform Products and JavaFX as you will be asked during the Java installation and configuration process by a click on the 'OK' button.
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在安装和配置Java SE Platform 和 JavaFX 过程中点击'OK'按钮接受 Oracle Binary Code License Agreement 协议.
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When the installation process complete, run the below command to test the successful installation of Java and check its version.
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在安装完成后，运行下面的命令，检查是否安装成功以及查看安装的版本
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kash@solr:~$ java -version
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java version "1.8.0_66"
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Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
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Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)
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The output indicates that we have successfully fulfilled the basic requirement of Solr by installing the Java. Now move to the next step to install Solr.
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执行结果表明我们已经成功的安装了Java,并达到安装Solr最基本的要求了
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### Installing Solr ###
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### 安装Solr###
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有两种不同的方式可以在Ubuntu上安装Solr，在本文中我们只用最新的源码包来演示源码安装
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Installing Solr on Ubuntu can be done by using two different ways but in this article we prefer to install its latest package from the source.
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To install Solr from its source, download its available package with latest version from there Official [Web Page][1], copy the link address and get it using 'wget' command.
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要使用源码安装Solr，先要从官网 [Web Page][1] 下载最新的可用安装包。复制以下链接，然后使用 'wget'命令来下载。
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$ wget http://www.us.apache.org/dist/lucene/solr/5.3.1/solr-5.3.1.tgz
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Run the command below to extract the archived service into '/bin' folder.
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运行下面的命令，将已压缩的服务解压到 /bin目录
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$ tar -xzf solr-5.3.1.tgz solr-5.3.1/bin/install_solr_service.sh --strip-components=2
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Then run the script to start Solr service that will creates a new 'solr' user and then installs solr as a service.
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运行脚本来启动Solr服务:将会先创建一个solr的用户，然后将Solr安装成服务
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$ sudo bash ./install_solr_service.sh solr-5.3.1.tgz
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To check the status of Solr service, you use the below command.
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使用下面的命令来检查Solr服务的状态
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$ service solr status
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### Creating Solr Collection: ###
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Now we can create multiple collections using Solr user. To do so just run the below command by mentioning the name of the collection you want to create and by specifying its configuration set as shown.
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### 创建Solr集合: ###
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我们现在可以使用Solr用户添加多个集合.就像下图所示的那样，我们仅仅只需要在命令行中指定集合名称和指定其配置集就可以创建多个集合了
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$ sudo su - solr -c "/opt/solr/bin/solr create -c myfirstcollection -n data_driven_schema_configs"
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We have successfully created the new core instance directory for our our first collection where we can add new data in it. To view its default schema file in directory '/opt/solr/server/solr/configsets/data_driven_schema_configs/conf' .
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我们已经成功的为我们的第一个集合创建了新的内核实例目录，并将数据添加到里面。
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它的概要文件在 '/opt/solr/server/solr/configsets/data_driven_schema_configs/conf'
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### Using Solr Web ###
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Apache Solr can be accessible on the default port of Solr that 8983. Open your favorite browser and navigate to http://your_server_ip:8983/solr or http://your-domain.com:8983/solr. Make sure that the port is allowed in your firewall.
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### Using Solr Web 使用Solr页面###
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可以使用默认的端口8983连接Apache Solr.打开浏览器，输入 http://your_server_ip:8983/solr 或者 http://your-domain.com:8983/solr. 确保你的防火墙允许8983端口.
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http://172.25.10.171:8983/solr/
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From the Solr Web Console click on the 'Core Admin' button from the left bar, then you will see your first collection that we created earlier using CLI. While you can also create new cores by pointing on the 'Add Core' button.
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在Solr的Web控制台的左侧菜单点击'Core Admin'按钮，你将会看见我们之前使用CLI方式创建的集合。你可以点击'Add Core'按钮来创建新的内核
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You can also add the document and query from the document as shown in below image by selecting your particular collection and pointing the document. Add the data in the specified format as shown in the box.
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就像下图中所示，你可以选择某个集合和指向文档向里面添加内容或从文档中查询数据。像方框中显示的那样添加指定格式的数据。
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{
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"number": 1,
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@ -113,20 +109,19 @@ You can also add the document and query from the document as shown in below imag
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"skills": "Linux and Virtualization"
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}
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After adding the document click on the 'Submit Document' button.
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添加文件后点击'Submit Document'按钮.
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### Conclusion ###
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You are now able to insert and query data using the Solr web interface after its successful installation on Ubuntu. Now add more collections and insert you own data and documents that you wish to put and manage through Solr. We hope you have got this article much helpful and enjoyed reading this.
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### 结尾###
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在Ubuntu上安装成功后，你就可以使用Solr WEB接口插入或查询数据。如果你想通过Solr来管理更多的数据和文件，可以创建更多的集合。希望你能喜欢这篇文章并且希望它能够帮到你。
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--------------------------------------------------------------------------------
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via: http://linoxide.com/ubuntu-how-to/configure-apache-solr-ubuntu-14-15/
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作者：[Kashif][a]
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译者：[译者ID](https://github.com/译者ID)
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译者：[taichirain](https://github.com/taichirain)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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