linux-nexus

nexus

一、概述

背景:

• maven编译的时候，npm/cnpm编译，需要下载大量的依赖包。
• 这些依赖包在每一次构建的时候都需要使用。
• 每次都从公网（maven 阿里云） npm(国内)。

可以搭建内部软件仓库：存放着依赖包

这个软件依赖仓库可以通过nexus实现。

二、极速部署指南

https://www.sonatype.com/download-oss-sonatype

[root@nexus ~]# ll
total 234836
-rw-------. 1 root root      1340 Jan  9 09:09 anaconda-ks.cfg
-rw-r--r--  1 root root 117557932 Feb 21 20:59 jdk-8u351-linux-x64.rpm
-rw-r--r--  1 root root 122904706 Mar 29 08:24 nexus-3.13.0-01-unix.tar.gz
[root@nexus ~]# rpm -ivh jdk-8u351-linux-x64.rpm 
[root@nexus ~]# mkdir -p /app/tools/
[root@nexus ~]# tar xf nexus-3.13.0-01-unix.tar.gz -C /app/tools/
[root@nexus ~]# ln -s /app/tools/nexus-3.13.0-01/ /app/tools/nexus
[root@nexus ~]# ln -s /app/tools/nexus/bin/nexus /bin/
[root@nexus ~]# nexus --version
WARNING: ************************************************************
WARNING: Detected execution as "root" user.  This is NOT recommended!
WARNING: ************************************************************
Usage: /usr/bin/nexus {start|stop|run|run-redirect|status|restart|force-reload}
 
[root@nexus ~]# nexus start
WARNING: ************************************************************
WARNING: Detected execution as "root" user.  This is NOT recommended!
WARNING: ************************************************************
Starting nexus
 
启动的警告: 不推荐使用root运行。

登录后屏幕提示：

System Requirement: max file descriptors [4096] likely too low, increase to at least [65536].

翻译nexus要求: 文件描述符过低，请增加到65536(每个进程可以打开的文件数量)

[root@nexus ~]#  ulimit -n 65536    #临时修改
[root@nexus ~]# tail -2 /etc/security/limits.conf
* soft nofile 65536
* hard nofile 65536

三、登录配置

http://nexus.cn:8081/

用户名: admin 密码:admin123

1.配置连接阿里云maven源

http://maven.aliyun.com/nexus/content/groups/public/

2.连接使用nexus

连接nexus方式	说明	方法
全局	所有java项目都连接nexus仓库	maven conf/settings.xml
某个项目	某个项目连接nexus仓库	java项目下面 pom.xml

#配置maven，直接改用户名和密码还有域名就行
[root@jenkins ~]# cat /app/tools/maven/conf/settings.xml
<?xml version="1.0" encoding="UTF-8"?>
<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">
  <pluginGroups>
 
  </pluginGroups>
 
  <proxies>
  </proxies>
 
  <servers>
     <server>   
       <id>my-nexus-releases</id>   
       <username>admin</username>   
       <password>admin123</password>   
       </server>   
     <server>   
       <id>my-nexus-snapshot</id>   
       <username>admin</username>   
       <password>admin123</password>   
     </server>
  </servers>
 
  <mirrors>
    <mirror>
      <id>nexus</id>
      <mirrorOf>*</mirrorOf>
      <url>http://nexus.cn:8081/repository/maven-public/</url>
    </mirror>
  </mirrors>
 
  
  <profiles>
    <profile>
      <id>nexus</id>
      <repositories>
        <repository>
          <id>central</id>
          <url>http://nexus.cn:8081/repository/maven-public/</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </repository>
      </repositories>
     <pluginRepositories>
        <pluginRepository>
          <id>central</id>
          <url>http://nexus.cn:8081/repository/maven-public/</url>
          <releases><enabled>true</enabled></releases>
          <snapshots><enabled>true</enabled></snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
</settings>
[root@jenkins ~]# cd /var/lib/jenkins/workspace/hello_word_maven_job
[root@jenkins /var/lib/jenkins/workspace/hello_word_maven_job]# ll
total 8
drwxr-xr-x 2 root root  29 Mar 28 21:01 dist
-rw-r--r-- 1 root root 930 Mar 28 21:02 pom.xml
-rw-r--r-- 1 root root 213 Mar 28 21:01 README.md
drwxr-xr-x 3 root root  18 Mar 28 21:01 src
drwxr-xr-x 5 root root 103 Mar 29 20:58 target
[root@jenkins /var/lib/jenkins/workspace/hello_word_maven_job]# cat /etc/hosts
172.16.1.74 nexus.cn
[root@jenkins /var/lib/jenkins/workspace/hello_word_maven_job]# mvn clean package
[INFO] Packaging webapp
[INFO] Assembling webapp [hello-world-war] in [/var/lib/jenkins/workspace/hello_word_maven_job/target/hello-world-war-1.0.0]
[INFO] Processing war project
[INFO] Copying webapp resources [/var/lib/jenkins/workspace/hello_word_maven_job/src/main/webapp]
[INFO] Webapp assembled in [72 msecs]
[INFO] Building war: /var/lib/jenkins/workspace/hello_word_maven_job/target/hello-world-war-1.0.0.war
[INFO] WEB-INF/web.xml already added, skipping
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  01:00 min
[INFO] Finished at: 2023-03-30T21:55:58+08:00
[INFO] ------------------------------------------------------------------------