阿里云服务相关配置搭建

JDK

JDK1.8下载：https://www.oracle.com/cn/java/technologies/javase/javase-jdk8-downloads.html

下载需要Oracle登录，注册即可，下载完成后上传至阿里云服务器，进行解压配置环境变量

[root@localhost ~]# ls
jdk-8u281-linux-x64.tar.gz
[root@localhost ~]# tar -zxvf jdk-8u281-linux-x64.tar.gz
……
[root@localhost ~]# ls
jdk1.8.0_281  jdk-8u281-linux-x64.tar.gz
[root@localhost ~]# mv jdk1.8.0_281/ /usr/local/jdk1.8
[root@localhost ~]# cd /usr/local/
[root@localhost local]# ls
aegis  bin  etc  games  include  jdk1.8  lib  lib64  libexec  sbin  share  src

环境变量配置

[root@localhost local]# vim /etc/profile

添加以下内容

export JAVA_HOME=/usr/local/jdk1.8
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib

生效配置文件，并验证

[root@localhost local]# source /etc/profile
[root@localhost local]# java -version
java version "1.8.0_281"
Java(TM) SE Runtime Environment (build 1.8.0_281-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)

Maven

注意：安装配置maven之前，一定要先安装配置完成JDK

maven官网下载地址：http://maven.apache.org/download.cgi

登录阿里云服务，wget下载

[root@localhost ~]# wget https://mirrors.bfsu.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.zip

解压

[root@localhost ~]# ls
apache-maven-3.6.3-bin.zip  jdk-8u281-linux-x64.tar.gz
[root@localhost ~]# unzip apache-maven-3.6.3-bin.zip
……
[root@localhost ~]# mv apache-maven-3.6.3/ /usr/local/maven
[root@localhost ~]# cd /usr/local/
[root@localhost local]# ls
aegis  bin  etc  games  include  jdk1.8  lib  lib64  libexec  maven  sbin  share  src

配置环境变量

[root@localhost local]# vim /etc/profile

添加以下内容

export MAVEN_HOME=/usr/local/maven
export PATH=$PATH:$MAVEN_HOME/bin

生效配置文件，并验证

[root@localhost ~]# source /etc/profile
[root@localhost ~]# mvn -v
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /usr/local/maven
Java version: 1.8.0_281, vendor: Oracle Corporation, runtime: /usr/local/jdk1.8/jre
Default locale: zh_CN, platform encoding: UTF-8
OS name: "linux", version: "4.18.0-193.28.1.el8_2.x86_64", arch: "amd64", family: "unix"

Maven镜像配置，maven默认中央仓库地址在海外，在国内访问下载会非常的慢，为此解决该问题，我们使用国内的镜像地址，常用阿里的镜像地址即可，带看MAVEN_HONE/conf/settings.xml或者~/.m2/settings.xml文件加入如下内容

<mirror>
  <id>alimaven</id>
  <mirrorOf>central</mirrorOf>
  <name>aliyun maven</name>
  <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
</mirror> 

Git

系统：CentOS8，安装Git，直接使用yum install git安装接口

# 1. 更新yum源
[root@lvjing ~]# yum update
# 2. yum安装git
[root@lvjing ~]# yum install git
# 3. 验证git安装
[root@lvjing ~]# git --version
git version 2.27.0

重新初始化后服务连接错误

ssh-keygen -R ip