制作本地yum源，缓存各种rpm依赖

制作本地yum源

步骤一：先将你需要的镜像找到上传到服务器里面

步骤二：创建一个目录挂载镜像

[root@k8s-node1 ~]# ls
anaconda-ks.cfg  CentOS-7-x86_64-DVD-2009.iso  init.sh  k8s
[root@k8s-node1 ~]# mkdir /repository
[root@k8s-node1 ~]# mkdir -p /repository/{centos，temp}
[root@k8s-node1 ~]# cd /repository/
[root@k8s-node1 repository]# cp /root/CentOS-7-x86_64-DVD-2009.iso  ./
[root@k8s-node1 repository]# ll
total 4601856
-rw-r--r-- 1 root root 4712300544 Mar 11 04:37 CentOS-7-x86_64-DVD-2009.iso
drwxr-xr-x 2 root root          6 Mar 11 04:35 {
    
    centos.temp}
[root@k8s-node1 repository]# chmod 777 -R /repository/*

挂载镜像到这个目录下面，就会产生很多目录，里面的Packages 目录全是rpm包

[root@k8s-node1 repository]# ls
centos  CentOS-7-x86_64-DVD-2009.iso  temp
[root@k8s-node1 repository]# mount CentOS-7-x86_64-DVD-2009.iso /repository/temp/
mount: /dev/loop0 is write-protected, mounting read-only
[root@k8s-node1 repository]# cd temp/
[root@k8s-node1 temp]# ls
CentOS_BuildTag  EULA  images    LiveOS    repodata              RPM-GPG-KEY-CentOS-Testing-7
EFI              GPL   isolinux  Packages  RPM-GPG-KEY-CentOS-7  TRANS.TBL

把rpm包都拷贝到centos这个目录下面

[root@k8s-node1 repository]# ls
centos  CentOS-7-x86_64-DVD-2009.iso  temp
[root@k8s-node1 repository]# cp -r temp/* centos/

取消挂载

[root@k8s-node1 repository]# ls
centos  CentOS-7-x86_64-DVD-2009.iso  temp
[root@k8s-node1 repository]# umount /repository/temp 

步骤三：修改yum源的配置文件
重点，先备份原来的yum源配置文件

[root@k8s-master ~]# cd /etc/yum.repos.d/
[root@k8s-node1 yum.repos.d]# ls
CentOS-Base.repo.bak  CentOS-Debuginfo.repo  CentOS-Media.repo    CentOS-Vault.repo  kubernetes.repo
CentOS-CR.repo        CentOS-fasttrack.repo  CentOS-Sources.repo  docker-ce.repo
[root@k8s-node1 yum.repos.d]# mv CentOS-Base.repo CentOS-Base.repo.bak

编写新的配置文件vim Centos7.repo

[centos.repo]
name=Centos7.repo
baseurl=file:///repository/centos
enabled=1
gpgcheck=0

mv yum.repos.d yum.repos.d.bak
[root@k8s-node1 etc]# mkdir yum.repos.d
[root@k8s-node1 etc]# cp  yum.repos.d.bak/Centos7.repo yum.repos.d
[root@k8s-node1 etc]# cd yum.repos.d
[root@k8s-node1 yum.repos.d]# ls
Centos7.repo
[root@k8s-node1 yum.repos.d]# yum clean all
[root@k8s-node1 yum.repos.d]# yum makecache
[root@k8s-node1 yum.repos.d]# yum repolist