阿里云yum源仓库配置：

镜像地址：http://mirrors.aliyun.com/    
仓库地址：http://mirrors.aliyun.com/repo/    
安装过程：    
    备份：mv    
    下载：wget    
    更新：yum clean all；yum makecache    
    
    
    
阿里云maven中央仓库配置：

阿里云Maven仓库地址——加速你的maven构建    
在maven的settings.xml文件里配置mirrors的子节点，添加如下mirror：    
   <mirror>    
        <id>nexus-aliyun</id>    
        <mirrorOf>*</mirrorOf>    
        <name>Nexus aliyun</name>    
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>    
    </mirror>

原文

安装MySQL
unzip MySQL-server-5.6.41.zip
MySQL-devel-5.6.41-1.el6.x86_64.rpm
MySQL-server-5.6.41-1.el6.x86_64.rpm
MySQL-client-5.6.41-1.el6.x86_64.rpm
查看是否已经安装了mysql，有则卸载
rpm -qa | grep -i mysql   #(查看是否安装了mysql)
yum -y remove mysql-libs*   #(卸载mysql)
安装mysql5.6
rpm -ivh MySQL-devel-5.6.41-1.el6.x86_64.rpm #再安装server、client包
配置mysql(/etc/my.cn)
vim /etc/my.cn # 修改配置文件
lower_case_table_names=1 # 大小写不区分
character-set-server=utf8 # 编码格式默认为utf-8
collation-server=utf8_general_ci # 默认编码格式
初始化MySQL及设置密码
/usr/bin/mysql_install_db
service mysql start
cat /root/.mysql_secret    #(查看原始密码)
mysql -uroot –p原始密码     #(登陆mysql)
set PASSWORD=PASSWORD('123456');
exit
开启远程访问(别人可以访问你的MySQL)
mysql -uroot -p123456
use mysql;
update user set password=password('123456') where user='root';
update user set host='%' where user='root' and host='localhost';
flush privileges;
exit
设置开机自启动
chkconfig mysql on
yum源的修改方法
由于CentOS服务器是在国外，所以很多时候下载都比较慢，所以我们可以配置国内的yum源，速度会快很多。
yum源的修改方法
首先备份CentOS-Base.repo
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
下载对应版本的CentOS-Base.repo，放入/etc/yum.repos.d/
# CentOS 5
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
# CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
# CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
运行yum makecache生成缓存
yum makecache
安装Maven
拷贝文件名为*_bin.tar.gz的链接地址：
http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.0/binaries/apache-maven-3.6.0-bin.tar.gz
下载文件到Linux上的/usr/local目录下
wget http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.0/binaries/apache-maven-3.6.0-bin.tar.gz
解压maven
tar -zxvf apache-maven-3.6.0-bin.tar.gz
# 重命名
mv apache-maven-3.6.0 maven
配置环境变量
vim /etc/profile
export M2_HOME=/usr/local/maven
export PATH=$M2_HOME/bin:$PATH
重新编译环境变量，使配置生效
source /etc/profile
验证是否安装成功
mvn -v

1. 修改阿里云Maven仓库地址



背景
新安装的Maven使用国外源，在更新jar包时速度非常之慢，其实我们可以切换到国内镜像源以加速下载。


配置

maven
在安装目录conf中找到settings.xml并设置源。


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



gradle
在 USER_HOME/.gradle/ 下面创建新文件 init.gradle，输入下面的内容并保存。


allprojects{
    repositories {
        def REPOSITORY_URL = 'http://maven.aliyun.com/nexus/content/groups/public/'
        all { ArtifactRepository repo ->
            if(repo instanceof MavenArtifactRepository){
                def url = repo.url.toString()
                if (url.startsWith('https://repo1.maven.org/maven2') || url.startsWith('https://jcenter.bintray.com/')) {
                    project.logger.lifecycle "Repository ${repo.url} replaced by $REPOSITORY_URL."
                    remove repo
                }
            }
        }
        maven {
            url REPOSITORY_URL
        }
    }
}


经测试在切换到阿里源之后，下载速度还是非常快速的。




2.CentOS系统更换软件安装源



第一步：备份你的原镜像文件，以免出错后可以恢复。

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
第二步：下载新的CentOS-Base.repo 到/etc/yum.repos.d/
CentOS 5
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

更改CentOS-Media.repo使其为不生效：
enabled=0

第三步：运行yum makecache生成缓存
yum clean all
yum makecache

linux镜像源
centos
https://wiki.centos.org/Download

http://mirrors.sohu.com/

http://mirrors.163.com/

https://mirrors.tuna.tsinghua.edu.cn/centos/
ubuntu
http://cdimage.ubuntu.com/releases/ #server版

https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cdimage/releases/

http://releases.ubuntu.com/

http://mirrors.aliyun.com/ubuntu-releases/

https://mirrors.tuna.tsinghua.edu.cn/ubuntu-releases/
yum源配置
基本源，epel源，extras源
centos7-yum源配置
[BaseOS]
name=BaseOs
baseurl=https://mirrors.huaweicloud.com/centos/$releasever/os/$basearch/
        https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/
enabled=1
gpgcheck=0

[epel]
name=epel
baseurl=https://mirrors.huaweicloud.com/epel/$releasever/$basearch/
        https://mirrors.tuna.tsinghua.edu.cn/epel/$releasever/$basearch/
enabled=1
gpgcheck=0

[extras]
name=extras
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/
        https://mirrors.huaweicloud.com/centos/$releasever/extras/$basearch/
enabled=1
gpgcheck=0

centos8 yum源配置：
[BaseOS]
name=BaseOS
baseurl=https://mirrors.huaweicloud.com/centos/$releasever/BaseOS/$basearch/os/
        https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/BaseOS/$basearch/os/
enabled=1
gpgcheck=0

[AppStream]
name=AppStream
baseurl=https://mirrors.huaweicloud.com/centos/$releasever/AppStream/$basearch/os/
        https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/AppStream/$basearch/os/
enabled=1
gpgcheck=0

[epel]
name=epel
baseurl=https://mirrors.huaweicloud.com/epel/$releasever/Everything/$basearch/
        https://mirrors.tuna.tsinghua.edu.cn/epel/$releasever/Everything/$basearch/
enabled=1
gpgcheck=0


[extras]
name=extras
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/os/
        https://mirrors.huaweicloud.com/centos/$releasever/extras/$basearch/os/
enabled=1
gpgcheck=0

ubunut apt源配置
#添加阿里源
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
#中科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse


#163源
deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse



#清华源
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

docker镜像站点
https://hub.docker.com/

https://hub.daocloud.io/

https://promotion.aliyun.com/ntms/act/kubernetes.html
docker加速器
https://hub-mirror.c.163.com/
https://xxxxxxx.mirror.aliyuncs.com/  # xxxx需要在阿里云的控制台–>容器与镜像服务–>镜像加速器获取
Maven依赖搜索
https://maven.aliyun.com/mvn/view

https://mvnrepository.com/artifact/org.aopalliance/com.springsource.org.aopalliance/1.0.0