更换yum源、创建本地yum源

系统版本:

[root@centos67d1 ~]# cat /etc/redhat-release 
CentOS release 6.7 (Final)
[root@centos67d1 ~]# uname -r
2.6.32-573.el6.x86_64

[root@centos71d1 ~]# cat /etc/redhat-release 
CentOS Linux release 7.1.1503 (Core) 
[root@centos71d1 ~]# uname -r
3.10.0-229.el7.x86_64

　
　
应用yum源的3种方式：

更换使用阿里云yum源

---

[root@centos71d1 ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
#备份原repo文件

[root@centos71d1 ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo \
http://mirrors.aliyun.com/repo/Centos-7.repo
#下载阿里云的repo文件

[root@centos71d1 ~]# yum clean all
[root@centos71d1 ~]# yum makecache
#清除本地缓存，并重建缓存

[root@centos71d1 ~]# yum repolist all
repo id                   repo name                                      status
base/7/x86_64             CentOS-7 - Base - mirrors.aliyun.com           enabled:  9,911
extras/7/x86_64           CentOS-7 - Extras - mirrors.aliyun.com         enabled:    369
updates/7/x86_64          CentOS-7 - Updates - mirrors.aliyun.com        enabled:  1,041
....

　

使用CentOS安装光盘作为本地yum源

---

[root@centos71d1 ~]# mkdir /media/cdrom
[root@centos71d1 ~]# mount -r /dev/cdrom /media/cdrom
#挂载CentOS安装光盘

[root@centos71d1 ~]# cp -a /etc/yum.repos.d /tmp/yum.repo.d.bak
#备份/etc/yum.repos.d目录
[root@centos71d1 ~]# rm -f /etc/yum.repos.d/*

[root@centos71d1 ~]# vim /etc/yum.repos.d/local.repo
[base]
name=CentOS 7 Release 7.1.1503
baseurl=file:///media/cdrom
enable=1
gpgcheck=0
#创建repo文件，添加以上内容

[root@centos71d1 ~]# yum clean all
[root@centos71d1 ~]# yum makecache
#重新生成缓存

[root@centos71d1 ~]# yum repolist
[root@centos71d1 ~]# yum list all
#显示所有程序包
[root@centos71d1 ~]# yum grouplist
#显示包组信息

　

创建本地yum repository

---

[root@centos67d1 ~]# mount -r /dev/cdrom /media/cdrom
[root@centos67d1 ~]# mkdir -p /yum/repo
[root@centos67d1 ~]# cp /media/cdrom/Packages/r* /yum/repo
#拷贝一些rpm包来做实验

[root@centos67d1 ~]# yum install -y createrepo
#使用createrepo命令创建yum源，先确保系统中已安装createrepo

[root@centos67d1 ~]# createrepo /yum/repo
[root@centos67d1 ~]# ll /yum/repo/repodata
#可以看到repodata目录被自动创建，目录下有几个自动生成的文件

[root@centos67d1 ~]# vim /etc/yum.repos.d/centos-local.repo
[YumRepoTest]
name=Yum Repo Test
baseurl=file:///yum/repo
gpgcheck=0
#在/etc/yum.repos.d目录下添加并配置repo文件

[root@centos67d1 ~]# yum repolist
YumRepoTest                                                      | 2.9 kB     00:00 ... 
YumRepoTest/primary_db                                           |  59 kB     00:00 ... 
repo id                    repo name                                             status
YumRepoTest                Yum Repo Test                                             75