Spark集群安装MySQL环境

1.修改yum源

鉴于用国外的Yum源，速度比较慢，所以想到将国外的yum源改为国内的Yum源，这里选择使用比较多的阿里云源。具体修改方法可以参考此连接

我们先新建一个新的文件用来存放Yum源：

[kfk@bigdata-pro01 ~]$ cd /etc/yum.repos.d/
[kfk@bigdata-pro01 yum.repos.d]$ ll
total 16
-rw-r--r--. 1 root root 1926 Nov 27  2013 CentOS-Base.repo
-rw-r--r--. 1 root root  638 Nov 27  2013 CentOS-Debuginfo.repo
-rw-r--r--. 1 root root  630 Nov 27  2013 CentOS-Media.repo
-rw-r--r--. 1 root root 3664 Nov 27  2013 CentOS-Vault.repo
[kfk@bigdata-pro01 yum.repos.d]$ sudo touch CentOS-Base

下载新的CentOS-Base.repo 到/etc/yum.repos.d/：

[kfk@bigdata-pro01 yum.repos.d]$ sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
--2019-03-21 09:19:23--  http://mirrors.aliyun.com/repo/Centos-6.repo
Resolving mirrors.aliyun.com... 183.232.170.189, 183.232.170.182, 111.29.22.220, ...
Connecting to mirrors.aliyun.com|183.232.170.189|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2523 (2.5K) [application/octet-stream]
Saving to: “/etc/yum.repos.d/CentOS-Base.repo”
100%[===================================================================================================================>] 2,523       --.-K/s   in 0s     
2019-03-21 09:19:23 (605 MB/s) - “/etc/yum.repos.d/CentOS-Base.repo” saved [2523/2523]
[kfk@bigdata-pro01 yum.repos.d]$ cd /etc/yum.repos.d
[kfk@bigdata-pro01 yum.repos.d]$ ls
CentOS-Base  CentOS-Base.repo  CentOS-Debuginfo.repo  CentOS-Media.repo  CentOS-Vault.repo
[kfk@bigdata-pro01 yum.repos.d]$ yum makecache                  //生成缓存
Loaded plugins: fastestmirror, refresh-packagekit, security
Determining fastest mirrors
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com

base                                                                                                                                  | 3.7 kB     00:00    
extras                                                                                                                                | 3.4 kB     00:00    
extras/filelists_db                                                                                                                   |  24 kB     00:00    
extras/prestodelta                                                                                                                    | 1.7 kB     00:00    
extras/primary_db                                                                                                                     |  28 kB     00:00    
extras/other_db                                                                                                                       |  14 kB     00:00    
updates                                                                                                                               | 3.4 kB     00:00     
updates/filelists_db                                                                                                                  | 2.4 MB     00:00    
updates/prestodelta                                                                                                                   | 120 kB     00:0