linux下搭建本地yum源

1.首先让镜像被系统识别

[root@localhost Desktop]# df       //首先查看已存在的挂载项
Filesystem         1K-blocks    Used Available Use% Mounted on
/dev/vda1           10473900 6971760   3502140  67% /
devtmpfs              469332       0    469332   0% /dev
tmpfs                 484920     140    484780   1% /dev/shm
tmpfs                 484920   12784    472136   3% /run
tmpfs                 484920       0    484920   0% /sys/fs/cgroup
/dev/mapper/vg0-vo    483670    2339    451840   1% /home

现在我把镜像挂载到/mnt目录上

[root@localhost Desktop]# mount -t iso9660 -o loop /dev/cdrom /mnt/cdrom  //镜像挂载到/mnt目录上
mount: /dev/loop0 is write-protected, mounting read-only
[root@localhost Desktop]# df
Filesystem         1K-blocks    Used Available Use% Mounted on
...
/dev/loop0           3654720 3654720         0 100% /mnt           //挂载镜像成功

2.查看/mnt下的镜像文件

[root@localhost Desktop]# cd /mnt
[root@localhost mnt]# ls
addons  images      Packages                 RPM-GPG-KEY-redhat-release
EFI     isolinux    release-notes            TRANS.TBL
EULA    LiveOS      repodata
GPL     media.repo  RPM-GPG-KEY-redhat-beta

有这些文件说明挂载成功了。

3.配置本地yum源

[root@localhost etc]# cd /etc/yum.repos.d/
[root@localhost etc]#rm -rf *
[root@localhost yum.repos.d]# vim yum.repo           //文件名称一定以.repo为后缀

[rhel7.0]                     //仓库描述
name=rhel7.0 server    //对软件源的描述
baseurl=file:///mnt         //镜像的挂载入地址      file:// --格式 /mnt--指定目录
gpgcheck=0              //不检查gpgkey
enabled=1                    //此yum源语句块立即生效

4.测试

[root@localhost yum.repos.d]# yum clear all                 //清空之前的yum源信息
Loaded plugins: langpacks
No such command: clear. Please use /usr/bin/yum --help
[root@localhost yum.repos.d]# yum repolist               //列出yum的信息
Loaded plugins: langpacks
repo id                          repo name                                status
rhel7.0                          rhel7.0 server                           4,305
repolist: 4,305
[root@localhost yum.repos.d]# yum install gcc -y         //下载gcc

5.设置开机自动挂载

系统reboot后，镜像不会自动挂载到/mnt目录上,我们需要修改系统启动文件。

[root@localhost Desktop]# vim /etc/rc.d/rc.local
最后一行添加
mount /root/Desktop/rhel-server-7.0-x86_64-dvd.iso /mnt     //mount 镜像的绝对路径 要挂载的目录
[root@localhost Desktop]# chmod 755 /etc/rc.d/rc.local     //系统开机时自动执行此脚本

测试

[root@localhost Desktop]# reboot
[root@foundation36 kiosk]# ssh 172.25.254.136
root@172.25.254.136's password: 
Last login: Thu Jan 17 22:50:16 2019 from 172.25.254.36
[root@localhost ~]# df
Filesystem         1K-blocks    Used Available Use% Mounted on
...
/dev/loop0           3654720 3654720         0 100% /mnt              //开机被自动挂载上