华为 ARM 架构服务器 CentOS7 yum 源
注意：arm架构的yum源配置暂时未能成功通过阿里云镜像，网易镜像成功创建。
下面就arm架构服务器中centos7配置yum源进行介绍。
1.清除缓存
yum clean all2.创建备份目录
mkdir /etc/yum.repos.d/bak3.备份
mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/bak4.创建依赖文件
在 /etc/yum.repos.d/目录下创建一下三个文件，如下所示
文件1：CentOS-Base.repo
# CentOS-Base.repo
#
# The mirror system uses the connecting IP address of the client and the
# update status of each mirror to pick mirrors that are updated to and
# geographically close to the client. You should use this for CentOS updates
# unless you are manually picking other mirrors.
#
# If the mirrorlist= does not work for you, as a fall back you can try the
# remarked out baseurl= line instead.
#
#
[base]
name=CentOS-7 - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/7/os/$basearch/
#baseurl=http://mirrors.aliyun.com/centos/7/os/$basearch/
gpgcheck=0
enabled=1
#gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#released updates
[updates]
#name=CentOS-7 - Updates - mirrors.aliyun.com
#failovermethod=priority
#baseurl=http://mirrors.aliyun.com/centos/7/updates/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
name=CentOS-$releasever - Updates
# mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/updates/$basearch/
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#additional packages that may be useful
[extras]
#name=CentOS-7 - Extras - mirrors.aliyun.com
#failovermethod=priority
#baseurl=http://mirrors.aliyun.com/centos/7/extras/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
name=CentOS-$releasever - Extras
# mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/extras/$basearch/
gpgcheck=0
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
[centosplus]
#name=CentOS-7 - Plus - mirrors.aliyun.com
#failovermethod=priority
#baseurl=http://mirrors.aliyun.com/centos/7/centosplus/$basearch/
#gpgcheck=1
#enabled=0
#gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
name=CentOS-$releasever - Plus
# mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
baseurl=http://mirrors.ustc.edu.cn/centos-altarch/$releasever/centosplus/$basearch/
gpgcheck=0
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-AltArch-Arm32
#contrib - packages by Centos Users
#[contrib]
#name=CentOS-7 - Contrib - mirrors.aliyun.com
#failovermethod=priority
#baseurl=http://mirrors.aliyun.com/centos/7/contrib/$basearch/
#gpgcheck=1
#enabled=0
#gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7文件2：ceph.repo
[ceph]
name=ceph
baseurl=http://mirrors.163.com/ceph/rpm-jewel/el7/aarch64/
gpgcheck=0
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.163.com/ceph/rpm-jewel/el7/noarch/
gpgcheck=0文件3：epel.repo
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://mirrors.aliyun.com/epel/7/$basearch
failovermethod=priority
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
[epel-debuginfo]
name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
baseurl=http://mirrors.aliyun.com/epel/7/$basearch/debug
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=0
[epel-source]
name=Extra Packages for Enterprise Linux 7 - $basearch - Source
baseurl=http://mirrors.aliyun.com/epel/7/SRPMS
failovermethod=priority
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
gpgcheck=05.建立缓存
yum makecache如果在建立缓存的时候报如下错，可通过以下方法解决：
File "/usr/libexec/urlgrabber-ext-down", line 28 except OSError, e:问题原因:
原因为升级python后新建了软连接指向了新版本，除非同时升级yum不然无法使用。需要手动更改报错文件指向python2后即可解决。
解决方法:
找出python2.7的路径
whereis python
编辑报错的配置文件，vim /usr/libexec/urlgrabber-ext-down； 在文件开头添加python2.7的路径
解决了以上问题后，重新makecache
[root@Demo-1-1-kylin yum.repos.d]# yum makecache
Loaded plugins: fastestmirror, ovl
Determining fastest mirrors
base | 3.6 kB 00:00:00
epel | 5.4 kB 00:00:00
extras | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
(1/13): base/aarch64/group_gz | 153 kB 00:00:00
(2/13): base/aarch64/filelists_db | 6.2 MB 00:00:00
(3/13): base/aarch64/other_db | 2.1 MB 00:00:00
(4/13): epel/aarch64/group_gz | 88 kB 00:00:00
(5/13): epel/aarch64/updateinfo | 1.0 MB 00:00:04
(6/13): epel/aarch64/prestodelta | 3.5 kB 00:00:00
(7/13): epel/aarch64/other_db | 3.2 MB 00:00:12
(8/13): extras/7/aarch64/filelists_db | 332 kB 00:00:00
(9/13): extras/7/aarch64/other_db | 150 kB 00:00:00
(10/13): updates/7/aarch64/other_db | 922 kB 00:00:00
(11/13): updates/7/aarch64/filelists_db | 3.6 MB 00:00:00
(12/13): epel/aarch64/updateinfo_zck | 1.5 MB 00:00:04
(13/13): epel/aarch64/filelists_db | 11 MB 00:00:39
Metadata Cache Created
[root@VM-16-16-kylin yum.repos.d]# 004、测试效果
yum install sqlite*
6.成功
> yum list | grep openstack
ansible-openstack-modules.noarch 0-20140902git79d751a.el7 epel
centos-release-openstack-queens.noarch 1-2.el7.centos extras
centos-release-openstack-rocky.noarch 1-1.el7.centos extras
centos-release-openstack-stein.noarch 1-1.el7.centos extras
centos-release-openstack-train.noarch 1-1.el7.centos extras 相关文章：
华为 arm架构服务器 centos7 yum源
arm架构服务器 centos7 更换yum源
File "/usr/libexec/urlgrabber-ext-down", line 28 except OSError, e:
ARM架构服务器centos7.4上yum安装k8s教程
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