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Centos7.5 [yum update -y] 更新报错

yum update Errno 256 No more mirrors to try

环境

CentOS Linux release 7.5.1804 (Core)

现象

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[[email protected] ~]# yum update -y    
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package polkit.x86_64 0:0.112-18.el7 will be updated
---> Package polkit.x86_64 0:0.112-18.el7_6.1 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================
Package Arch Version Repository Size
==============================================================================================================================================================================
Updating:
polkit x86_64 0.112-18.el7_6.1 updates 168 k

Transaction Summary
==============================================================================================================================================================================
Upgrade 1 Package

Total download size: 168 k
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
polkit-0.112-18.el7_6.1.x86_64 FAILED
http://mirrors.ucloud.cn/centos/7/updates/x86_64/Packages/polkit-0.112-18.el7_6.1.x86_64.rpm: [Errno -1] Package does not match intended download. Suggestion: run yum --enablerepo=updates clean metadata
Trying other mirror.


Error downloading packages:
polkit-0.112-18.el7_6.1.x86_64: [Errno 256] No more mirrors to try.

解决方案

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wget http://mirror.centos.org/centos/7/updates/x86_64/Packages/polkit-0.112-18.el7_6.1.x86_64.rpm
sudo yum localinstall -y polkit-0.112-18.el7_6.1.x86_64.rpm
# 或者
sudo yum install http://mirror.centos.org/centos/7/updates/x86_64/Packages/polkit-0.112-18.el7_6.1.x86_64.rpm -y

参考

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https://qiita.com/HiroshiAkutsu/items/9fdc65ce6147793d0a01

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