作者： Mr.Tang

今天下载了华为的openEuler。装在电脑虚拟机里。

yum update 发现没有配置repo，于是想把Repo源换成华为的，按照 华为云操作 https://mirrors.huaweicloud.com/

在/etc/yum.repos.d目录下，创建文件EulerOS.repo，设置为

[base]
name=EulerOS-2.0SP5 base
baseurl=http://mirrors.huaweicloud.com/euler/2.5/os/x86_64/
enabled=1
gpgcheck=1
gpgkey=http://mirrors.huaweicloud.com/euler/2.5/os/RPM-GPG-KEY-EulerOS

然后update。显示出错：

[root@Euler ~]# yum update
Last metadata expiration check: 0:18:26 ago on 2020年04月14日 星期二 22时18分26秒
Error:
 Problem 1: cannot install both perl-Compress-Raw-Zlib-1:2.061-4.x86_64 and perl
  - package perl-IO-Compress-2.081-6.oe1.noarch requires perl(Compress::Raw::Zli
  - cannot install the best update candidate for package perl-Compress-Raw-Zlib-
  - problem with installed package perl-IO-Compress-2.081-6.oe1.noarch
 Problem 2: package perl-Time-HiRes-4:1.9725-3.x86_64 requires perl(:MODULE_COMP
  - cannot install both perl-4:5.16.3-285.h2.x86_64 and perl-4:5.28.0-434.oe1.x8
  - cannot install both perl-4:5.16.3-285.h4.x86_64 and perl-4:5.28.0-434.oe1.x8
  - cannot install both perl-4:5.16.3-285.h3.x86_64 and perl-4:5.28.0-434.oe1.x8
  - cannot install the best update candidate for package perl-Time-HiRes-1.9760-
  - problem with installed package perl-4:5.28.0-434.oe1.x86_64
 Problem 3: package python-2.7.5-58.h13.x86_64 obsoletes python2 provided by pyt
  - package python2-debug-2.7.16-15.oe1.x86_64 requires python2 = 2.7.16-15.oe1,
  - cannot install the best update candidate for package python2-2.7.16-15.oe1.x
  - problem with installed package python2-debug-2.7.16-15.oe1.x86_64
 Problem 4: package qemu-img-10:1.5.3-156.5.h2.x86_64 requires libiscsi.so.2()(6
  - cannot install both libiscsi-1.9.0-6.x86_64 and libiscsi-1.18.0-6.oe1.x86_64
  - cannot install the best update candidate for package qemu-img-2:4.0.1-11.oe1
  - problem with installed package libiscsi-1.18.0-6.oe1.x86_64
 Problem 5: package python2-debug-2.7.16-15.oe1.x86_64 requires python2-devel =
  - package python2-2.7.16-15.oe1.x86_64 requires libpython2.7_d.so.1.0()(64bit)
  - package python-devel-2.7.5-58.h13.x86_64 obsoletes python2-devel provided by
  - package python2-tkinter-2.7.16-15.oe1.x86_64 requires python2 = 2.7.16-15.oe
  - cannot install the best update candidate for package python2-devel-2.7.16-15
  - problem with installed package python2-tkinter-2.7.16-15.oe1.x86_64
(try to add '--allowerasing' to command line to replace conflicting packages or

如上面所示，update 总是出错。

然后换成 EulerOS-2.0SP3 base ，SP2，SP1 都是依然出错。

最后在 文档的 “系统安装”中找到一个 repo源 的链接：https://openeuler.org/zh/docs/20.03_LTS/docs/Releasenotes/%E7%B3%BB%E7%BB%9F%E5%AE%89%E8%A3%85.html

正确的repo源地址是：http://repo.openeuler.org/openEuler-20.03-LTS/OS/x86_64/

/etc/yum.repos.d/EulerOS.repo 配置为：

[base]
name=openEuler-20.03-LTS base
baseurl=https://repo.openeuler.org/openEuler-20.03-LTS/OS/x86_64/
enabled=1
gpgcheck=1
gpgkey=https://repo.openeuler.org/openEuler-20.03-LTS/OS/x86_64/RPM-GPG-KEY-openEuler

之后再次update成功！

yum clean all
yum makecache
yum update

openEuler-20.03-LTS base                                                                                                                                                            36 kB/s | 2.7 MB     01:18
Last metadata expiration check: 0:00:56 ago on 2020年04月14日 星期二 23时17分46秒.
Dependencies resolved.
Nothing to do.
Complete!

原因在于： openEuler 与 华为云中的 EulerOS 是两个不同的发行版本!!!