OpenEuler20.03-LTS-SP2配置阿里yum源

之前一直配置的是华为的yum源，但是华为镜像那边不太稳定，于是打算用阿里的，对于其他版本的openEuler直接改成对应版本就好啦

1、在/etc/yum.repos.d/目录下新建openEuler.repo

[OS]
name=OS
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS/OS/$basearch/
enabled=1

[everything]
name=everything
baseurl=https://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS/everything/$basearch/
enabled=1

[EPOL]
name=EPOL
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS-SP2/EPOL/main/$basearch/
enabled=1

[debuginfo]
name=debuginfo
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS-SP2/debuginfo/$basearch/
enabled=1

[source]
name=source
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS-SP2/source/
enabled=1

[update]
name=update
baseurl=http://mirrors.aliyun.com/openeuler/openEuler-20.03-LTS-SP2/update/$basearch/
enabled=1
gpgcheck=1

2、清除缓存，重新建立缓存

yum clean all
yum makecache