环境： redhat 6.5、nexus版本: 2.12.0

1.下载安装包 https://sonatype-download.global.ssl.fastly.net/nexus/oss/nexus-2.12.0-01-bundle.tar.gz
我的计划安装目录: /home/hadoop/tools/nexus

$ tar zxvf nexus-2.12.0-01-bundle.tar.gz -C /home/hadoop/tools/

2.如有需要可以更改nexus的默认端口
vi /home/hadoop/tools/nexus-2.12.0-01/conf/nexus.properties 参考如下:

application-port=8601

3.启动Nexus:
$ /home/hadoop/tools/nexus-2.12.0-01/bin/nexus start
然后打开web URL: http://IP:8601/nexus 即可看到
选择右上角login，用户名/密码 admin/admin123

4.选择左列菜单[Repositories]可以查看repository的列表，关于Nexus的库:
Public Repositories group http://localhost:8681/nexus/content/groups/public/
3rd party hosted
Apache Snapshots proxy
Central proxy
Central M1 shadow virtual
Releases hosted
Snapshots hosted
以上repository的类型
hosted：本地仓库，通常我们会部署自己的构件到这一类型的仓库。比如公司的第二方库。
proxy：代理仓库，它们被用来代理远程的公共仓库，如maven中央仓库。
group：仓库组，用来合并多个hosted/proxy仓库。
virtual:虚拟库
关于Public Repositories，我们使用Nexus通常用这个库即可，选中[Public Repositories]，点击下方[Configuration]即可看到Orderd Group Repositories

5.(可选)修改Maven的setting.xml可以使得maven下载jar包通过nexus从internet下载
vi setting.xml

<profiles>
<profile>
<id>nexusProfile</id>
<repositories>
<repository>
<id>nexus</id>
<name>Nexus Repository</name>
<url>http://localhost:8681/nexus/content/groups/public/</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>nexusProfile</activeProfile>
</activeProfiles>

6.添加3rd party jar
示例:遇到报错[ERROR] Failed to execute goal on project saiku-web: Could not resolve dependencies for project org.saikuanalytics:saiku-
web:jar:3.8-RC5: Failure to find org.apache.pdfbox:pdfbox-app:jar:2.0.0 in http://repo.meteorite.bi/content/repositories/alabs-release-
local/ was cached in the local repository, resolution will not be reattempted until the update interval of Analytical Labs Repo has elapsed or
updates are forced -> [Help 1]

我们可以通过向nexus添加pdfbox-app-2.0.0.jar包,根据以上信息可以确定:
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox-app</artifactId>
<version>2.0.0</version>

Step1 单击 3rd party,选中 Artifact Upload。GAV Definition 选中 GAV Parameters,
单击下方[Select Artifacts(s) to Upload]然后选择jar包，并补充上方信息，参考如下：

Step2 单击左下方 Add Artifact，加到Artifacts表中
Step3 最后选择最下方 Upload Artifacts(s)即可添加到3rd party repository中进行使用