故障现象:
很久操作系统没有升级了,今天更新提示操作系统升级失败,原因是下载源数据错误,认为与Redhat被IBM收购之后, 收紧大家白嫖的资源有关系, 见下图。 操作系统为:CentOS Stream 9
# dnf update
解决方案
1、源配置yum配置文件路径 /etc/yum.repos.d/centos.repo 2、备份源配置 [很重要,如果不行方便恢复]
[root@server yum.repos.d]# cp centos-addons.repo /etc/yum.repos.d/centos-addons.repo.bak
! 3、通过查看发现原配置为 CentOS 官方源
[root@server yum.repos.d]# cat centos-addons.repo
4、编辑源文件 4.1)使用:%d命令 :%d命令可以删除整个文件的内容。只需在命令模式下输入:%d即可。这将删除所有行,包括最后一行。 4.2)
# 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-$releasever - Base - mirrors.aliyun.com
#failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/BaseOS/$basearch/os/
http://mirrors.aliyuncs.com/centos-stream/$stream/BaseOS/$basearch/os/
http://mirrors.cloud.aliyuncs.com/centos-stream/$stream/BaseOS/$basearch/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-stream/RPM-GPG-KEY-CentOS-Official
#additional packages that may be useful
#[extras]
#name=CentOS-$releasever - Extras - mirrors.aliyun.com
#failovermethod=priority
#baseurl=https://mirrors.aliyun.com/centos-stream/$stream/extras/$basearch/os/
# http://mirrors.aliyuncs.com/centos-stream/$stream/extras/$basearch/os/
# http://mirrors.cloud.aliyuncs.com/centos-stream/$stream/extras/$basearch/os/
#gpgcheck=1
#gpgkey=https://mirrors.aliyun.com/centos-stream/RPM-GPG-KEY-CentOS-Official
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
#failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/centosplus/$basearch/os/
http://mirrors.aliyuncs.com/centos-stream/$stream/centosplus/$basearch/os/
http://mirrors.cloud.aliyuncs.com/centos-stream/$stream/centosplus/$basearch/os/
gpgcheck=1
enabled=0
gpgkey=https://mirrors.aliyun.com/centos-stream/RPM-GPG-KEY-CentOS-Official
[PowerTools]
name=CentOS-$releasever - PowerTools - mirrors.aliyun.com
#failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/PowerTools/$basearch/os/
http://mirrors.aliyuncs.com/centos-stream/$stream/PowerTools/$basearch/os/
http://mirrors.cloud.aliyuncs.com/centos-stream/$stream/PowerTools/$basearch/os/
gpgcheck=1
enabled=0
gpgkey=https://mirrors.aliyun.com/centos-stream/RPM-GPG-KEY-CentOS-Official
[AppStream]
name=CentOS-$releasever - AppStream - mirrors.aliyun.com
#failovermethod=priority
baseurl=https://mirrors.aliyun.com/centos-stream/$stream/AppStream/$basearch/os/
http://mirrors.aliyuncs.com/centos-stream/$stream/AppStream/$basearch/os/
http://mirrors.cloud.aliyuncs.com/centos-stream/$stream/AppStream/$basearch/os/
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/centos-stream/RPM-GPG-KEY-CentOS-Official
4.3)更新缓存
yum makecache && yum update
从上图可以看出升级成功,一切OK!