linux系统详细安装教程：Linux安装和配置问题解决方案
linux系统详细安装教程：Linux安装和配置问题解决方案
ISO镜像文件挂载问题1 在 /dev/sr0 上找不到媒体解决办法
1）检查镜像文件是否存在2）检查镜像文件是否已挂载或是连接- VMWare
- Hyper-v
# 如cdrom目录不存在，需创建，挂载的目录可以自定义
mkdir /media/cdrom
mount /dev/sr0 /media/cdrom
# 出现 mount: /dev/sr0 is write-protected mounting read-only 不代表挂载不成功
# 验证挂载是否成功
df -h
umount /dev/sr0yum安装报错问题1 [Errno 256] No more mirrors to try
解决办法
A、配置本地yum源解决1) ISO镜像文件必须挂载成功，这是前提2）进入yum.repos.d目录cd /etc/yum.repos.d3）备份yum.repos.d目录下的文件
mv public-yum-ol7.repo public-yum-ol7.repo.bak
$ vi redhat-base.repo
>>
[media-baseos]
name=CentOS Stream $releaserver -Media - BaseOS
baseurl=file:///media/cdrom/BaseOS
enabled=1
gpgcheck=0
#gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release
[media-appstream]
name=CentOS Stream $releaserver -Media - AppStream
baseurl=file:///media/cdrom/AppStream
enabled=1
gpgcheck=0
#gpgkey=file:///media/cdrom/RPM-GPG-KEY-redhat-release
$ :wq
- 验证yum源配置是否成功
# 清除yum缓存
yum clean all
# 缓存本地yum源的软件包信息
yum makecacheB、配置阿里云yum源1）禁用本地yun源
$ vi redhat-base.repo
>>
enabled=0 # 只需把1修改为02）配置阿里yum源
# 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-Official3) 配置中科大yum源
[baseos]
name=CentOS Stream $releasever - BaseOS
#metalink=https://mirrors.centos.org/metalink?repo=centos-baseos-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/BaseOS/x86_64/os/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
countme=1
enabled=1
[baseos-debug]
name=CentOS Stream $releasever - BaseOS - Debug
#metalink=https://mirrors.centos.org/metalink?repo=centos-baseos-debug-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/BaseOS/x86_64/debug/tree/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
enabled=0
[baseos-source]
name=CentOS Stream $releasever - BaseOS - Source
#metalink=https://mirrors.centos.org/metalink?repo=centos-baseos-source-$stream&arch=source&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/BaseOS/source/tree/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
enabled=0
[appstream]
name=CentOS Stream $releasever - AppStream
#metalink=https://mirrors.centos.org/metalink?repo=centos-appstream-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/AppStream/x86_64/os/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
countme=1
enabled=1
[appstream-debug]
name=CentOS Stream $releasever - AppStream - Debug
#metalink=https://mirrors.centos.org/metalink?repo=centos-appstream-debug-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/AppStream/x86_64/debug/tree/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
enabled=0
[appstream-source]
name=CentOS Stream $releasever - AppStream - Source
#metalink=https://mirrors.centos.org/metalink?repo=centos-appstream-source-$stream&arch=source&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/BaseOS/source/tree/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
enabled=0
[crb]
name=CentOS Stream $releasever - CRB
#metalink=https://mirrors.centos.org/metalink?repo=centos-crb-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/CRB/x86_64/os/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
countme=1
enabled=0
[crb-debug]
name=CentOS Stream $releasever - CRB - Debug
#metalink=https://mirrors.centos.org/metalink?repo=centos-crb-debug-$stream&arch=$basearch&protocol=https http
baseurl=https://mirrors.ustc.edu.cn/centos-stream/9-stream/CRB/x86_64/debug/tree/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
gpgcheck=1
repo_gpgcheck=0
metadata_expire=6h
enabled=04) 更新缓存
yum makecache && yum updateHyper-v网络适配器的问题
解决办法
1）打开Hyper-v管理界面，创建虚拟交换机
