Nexus Repository OSS 3安裝配置使用

Nexus Repository OSS 3是一個開源的倉庫管理系統，提供了更加豐富的功能，而且安裝、配置、使用起來也更加簡單友善。OSS 3版本主要支援的倉庫（Repository）包括如下：

bower
docker
maven
npm
nuget
pypi
raw
rubygems
yum

其中，對于上述每種類型的Nexus倉庫，都分别具有如下主要3種類型：

hosted：本地倉庫，可以将我們内部使用的一些Maven項目，釋出到該類型倉庫，供内部開發人員使用。

proxy：代理倉庫，用來代理遠端公共倉庫，比如Maven中央倉庫。

group：倉庫組，用來合并多個類型（hosted/proxy）的倉庫。

這裡，我們主要以支援Java程式設計的Maven項目依賴管理和建構進行實踐，Nexus版本為nexus-3.7.0-04。

安裝配置

下載下傳Nexus Repository Manager軟體包：

wget https://sonatype-download.global.ssl.fastly.net/nexus/3/nexus-3.7.0-04-unix.tar.gz
tar xvzf nexus-3.7.0-04-unix.tar.gz

解壓縮後可以看到，生成nexus-3.7.0-04和sonatype-work兩個目錄:

[[email protected] nexus]# ls
nexus-3.7.0-04  sonatype-work

是這兩個目錄在同一個目錄下，例如我這裡是在nexus目錄下面。

可以在etc/nexus-default.properties配置檔案中，修改對應的配置項，滿足實際需要，這裡我直接使用預設的，其它可以使用的配置可以參考官網說明。

如果使用自定義的JDK，可以增加如下配置

export JAVA_HOME=/usr/local/java/jdk1.8.0_144/

啟動Nexus Repository Manager，執行如下指令：

bin/nexus start

然後，可以通過Web頁面登入浏覽，連結如下所示：

http://172.16.117.65:8081

預設使用者admin，預設密碼為admin123，根據自己的需要修改密碼，保證Nexus的安全。

Nexus Repository Manager也提供了友善的管理使用者和權限的基礎功能，可以登入到Web管理頁面上進行管理配置，如下圖所示：

Nexus Repository OSS 3安裝配置使用

釋出管理

我們需要将自己的Maven項目建構後，釋出到Nexus中，供其它項目使用，是以需要進行相關配置，并且具有一定權限才能向Nexus倉庫中釋出。

首先，在settings.xml檔案中進行配置，配置内容如下所示：

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0

http://maven.apache.org/xsd/settings-1.0.0.xsd">

    <localRepository>/Users/yanjun/.m2/repository</localRepository>
    <servers>
         <server>
           <id>maven-releases</id>
           <username>admin</username>
           <password>xxxxxxxxxxxxxxxx</password>
        </server>
         <server>
           <id>maven-snapshots</id>
           <username>admin</username>
           <password>xxxxxxxxxxxxxxxx</password>
        </server>
     </servers>
</settings>

然後，在待要釋出到Nexus倉庫的Maven項目的pom.xml檔案中，增加釋出管理配置，如下所示：

<distributionManagement>
        <repository>
            <id>maven-releases</id>
            <name>Nexus ReleaseRepository</name>
            <url>http://172.16.117.65:8081/repository/maven-releases/</url>
        </repository>
        <snapshotRepository>
            <id>maven-snapshots</id>
            <name>Nexus SnapshotRepository</name>
            <url>http://172.16.117.65:8081/repository/maven-snapshots/</url>
        </snapshotRepository>
    </distributionManagement>

需要保證，pom.xml中distributionManagement中的id與setting.xml中配置的server中的id必須相同，才能釋出。

最後，執行如下指令釋出到Nexus的Snapshots倉庫：

cd /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer
mvn -s ~/settings.xml deploy

執行上述指令，釋出到Nexus的Snapshots倉庫的過程，如下所示：

azkaban-app-deployer git:(master) ✗ mvn -s ~/settings.xml deploy
[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] Building azkaban-app-deployer 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ azkaban-app-deployer ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 2 resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5:compile (default-compile) @ azkaban-app-deployer ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ azkaban-app-deployer ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5:testCompile (default-testCompile) @ azkaban-app-deployer ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ azkaban-app-deployer ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ azkaban-app-deployer ---
[INFO] Building jar: /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/target/azkaban-app-deployer-0.0.1-SNAPSHOT.jar
[INFO] 
[INFO] --- maven-assembly-plugin:2.4.1:single (make-assembly) @ azkaban-app-deployer ---
[INFO] Building jar: /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/target/azkaban-app-deployer-0.0.1-SNAPSHOT-jar-with-dependencies.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ azkaban-app-deployer ---
[INFO] Installing /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/target/azkaban-app-deployer-0.0.1-SNAPSHOT.jar to /Users/yanjun/.m2/repository/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-SNAPSHOT.jar
[INFO] Installing /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/pom.xml to /Users/yanjun/.m2/repository/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-SNAPSHOT.pom
[INFO] Installing /Users/yanjun/Workspaces/idea-workspace/azkaban-app-deployer/target/azkaban-app-deployer-0.0.1-SNAPSHOT-jar-with-dependencies.jar to /Users/yanjun/.m2/repository/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-SNAPSHOT-jar-with-dependencies.jar
[INFO] 
[INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ azkaban-app-deployer ---
Downloading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/maven-metadata.xml
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1.jar
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1.jar (36 kB at 3.7 kB/s)
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1.pom
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1.pom (3.8 kB at 416 B/s)
Downloading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/maven-metadata.xml
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/maven-metadata.xml
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/maven-metadata.xml (780 B at 85 B/s)
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/maven-metadata.xml
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/maven-metadata.xml (290 B at 31 B/s)
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1-jar-with-dependencies.jar
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/azkaban-app-deployer-0.0.1-20180102.065956-1-jar-with-dependencies.jar (3.8 MB at 172 kB/s)
Uploading: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/maven-metadata.xml
Uploaded: http://172.16.117.65:8081/repository/maven-snapshots/cn/xiweiai/azkaban-app-deployer/0.0.1-SNAPSHOT/maven-metadata.xml (1.0 kB at 110 B/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:13 min
[INFO] Finished at: 2018-01-02T15:01:05+08:00
[INFO] Final Memory: 20M/274M
[INFO] ------------------------------------------------------------------------

可以登入到Nexus Repository Manager中，檢視已經釋出項目jar的Snapshots檔案，示例如下圖所示：

Nexus Repository OSS 3安裝配置使用

需要說明的是，我們在Maven項目的pom.xml檔案中，如果版本号中含有SNAPSHOT，則會自動釋出到Snapshots倉庫中，例如：

<groupId>cn.xiweiai</groupId>
    <artifactId>azkaban-app-deployer</artifactId>
    <version>0.0.1-SNAPSHOT</version>

如果将version的值改為不帶SNAPSHOT字尾，則會釋出到releases倉庫中，根據實際需要進行選擇。

使用倉庫

安裝配置好我們私有的Maven倉庫，如果我們想使用我們内部釋出到Nexus中的Maven依賴，可以直接配置Release Repository：

<repositories>
        <repository>
            <id>maven-releases</id>
            <name>Nexus ReleaseRepository</name>
            <url>http://172.16.117.65:8081/repository/maven-releases/</url>
        </repository>
    </repositories>

也可以通過使用group類型的倉庫，隻需要在Maven項目的pom.xml檔案中增加如下配置即可：

<repositories>
        <repository>
            <id>nexus</id>
            <url>http://172.16.117.65:8081/repository/maven-public/</url>
        </repository>
    </repositories>

上述配置的該倉庫是group類型的倉庫組，它會将hosted和proxy類型的倉庫合并起來，即：我們在pom.xml中配置依賴時，如果是我們内部的依賴，則會從hosted類型的倉庫中去加載；如果是一些開源的依賴，則會通過proxy類型的倉庫，代理轉發到外部倉庫中下載下傳。如果有其它更多非group類型的倉庫，也會從這些倉庫中查找依賴資源。

參考連結

https://www.sonatype.com/download-oss-sonatype
http://books.sonatype.com/nexus-book/3.5/reference/index.html

Nexus Repository OSS 3安裝配置使用

安裝配置

釋出管理

使用倉庫

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