创建本地yum源和局域网yum源

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搭建本地yum源和局域网yum源，解决内网环境离线安装的问题

1. 本地yum源

分两种，一种是来源于ISO中，另一种是自己有一堆rpm安装包。

1.1 ISO来源的

  1. 挂载CentOS-7-x86_64-Everything-1511.iso，把里面所有文件都拷贝到本地目录/yum/yum-iso

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    [root@min-base ~]# mkdir /mnt/yum-iso
    [root@min-base ~]# mount /dev/cdrom /mnt/yum-iso/
    mount: /dev/sr0 is write-protected, mounting read-only
    [root@min-base ~]# mkdir /yum/
    [root@min-base ~]# cp -a /mnt/yum-iso/ /yum/
    [root@min-base ~]# ll /yum/
    total 4
    dr-xr-xr-x. 8 root root 4096 Dec 10  2015 yum-iso
    [root@min-base ~]# ll /yum/yum-iso/
    total 640
    -r--r--r--. 1 root root     14 Dec 10  2015 CentOS_BuildTag
    dr-xr-xr-x. 3 root root     33 Dec 10  2015 EFI
    -r--r--r--. 1 root root    215 Dec 10  2015 EULA
    -r--r--r--. 1 root root  18009 Dec 10  2015 GPL
    dr-xr-xr-x. 3 root root     69 Dec 10  2015 images
    dr-xr-xr-x. 2 root root   4096 Dec 10  2015 isolinux
    dr-xr-xr-x. 2 root root     41 Dec 10  2015 LiveOS
    dr-xr-xr-x. 2 root root 483328 Dec 10  2015 Packages
    dr-xr-xr-x. 2 root root   4096 Dec 10  2015 repodata
    -r--r--r--. 1 root root   1690 Dec 10  2015 RPM-GPG-KEY-CentOS-7
    -r--r--r--. 1 root root   1690 Dec 10  2015 RPM-GPG-KEY-CentOS-Testing-7
    -r--r--r--. 1 root root   2883 Dec 10  2015 TRANS.TBL
    [root@min-base ~]#

  2. 备份、移除原来的repo

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    [root@min-base ~]#  ll /etc/yum.repos.d/
    -rw-r--r--. 1 root root 1664 Dec  9  2015 CentOS-Base.repo
    -rw-r--r--. 1 root root 1309 Dec  9  2015 CentOS-CR.repo
    -rw-r--r--. 1 root root  649 Dec  9  2015 CentOS-Debuginfo.repo
    -rw-r--r--. 1 root root  290 Dec  9  2015 CentOS-fasttrack.repo
    -rw-r--r--. 1 root root  630 Dec  9  2015 CentOS-Media.repo
    -rw-r--r--. 1 root root 1331 Dec  9  2015 CentOS-Sources.repo
    -rw-r--r--. 1 root root 1952 Dec  9  2015 CentOS-Vault.repo
    [root@min-base ~]# mv /etc/yum.repos.d /etc/yum.repos.d-bak
    [root@min-base ~]# mkdir /etc/yum.repos.d

  3. 配置本地repo

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    [root@min-base ~]# vim /etc/yum.repos.d/CentOS-Media.repo

    [c7-media]
    name=CentOS-$releasever - Media
    baseurl=file:///yum/yum-iso/
    gpgcheck=0
    enabled=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

    注：配置repo路径、关闭gbp校验、启用这个repo

  4. 制作cache

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    [root@min-base yum.repos.d]# yum clean all
    Loaded plugins: fastestmirror
    Cleaning repos: c7-media
    Cleaning up everything
    Cleaning up list of fastest mirrors
    [root@min-base yum.repos.d]# yum makecache
    Loaded plugins: fastestmirror
    c7-media                                                                                                         | 3.6 kB  00:00:00     
    (1/4): c7-media/group_gz                                                                                         | 155 kB  00:00:00     
    (2/4): c7-media/primary_db                                                                                       | 5.3 MB  00:00:00     
    (3/4): c7-media/filelists_db                                                                                     | 6.2 MB  00:00:00     
    (4/4): c7-media/other_db                                                                                         | 2.3 MB  00:00:00     
    Determining fastest mirrors
    Metadata Cache Created
    [root@min-base yum.repos.d]#

  5. 找个原来没有的安装过的包测试一下

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    [root@min-base yum.repos.d]# yum install tree
    Loaded plugins: fastestmirror
    Loading mirror speeds from cached hostfile
    Resolving Dependencies
    --> Running transaction check
    ---> Package tree.x86_64 0:1.6.0-10.el7 will be installed
    --> Finished Dependency Resolution

1.2 自定义的yum源

  1. 准备rpm包，将其全部都放在一个指定的目录，例如：/yum/yum-custom/packages

  2. 创建repo

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    [root@min-base ~]# createrepo -u -d  /yum/yum-custom/
    Spawning worker 0 with 1 pkgs
    Spawning worker 1 with 0 pkgs
    Workers Finished
    Saving Primary metadata
    Saving file lists metadata
    Saving other metadata
    Generating sqlite DBs
    Sqlite DBs complete
    [root@min-base ~]# ll /yum/yum-custom/
    total 4
    drwxr-xr-x. 2 root root   41 Dec 20 07:03 packages
    drwxr-xr-x. 2 root root 4096 Dec 20 07:08 repodata
    [root@min-base ~]#

    注：createrepo如果没有这个说明没安装，要去找rpm包手动安装

  3. 配置自定义repo

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    [root@min-base ~]# vi /etc/yum.repos.d/CentOS-Media.repo

    [c7-media]
    name=CentOS-$releasever - Media
    baseurl=file:///yum/yum-custom/
    gpgcheck=0
    enabled=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

  4. 制作cache和安装测试同上

局域网YUM源

局域网YUM源可以配成：本地YUM源 + FTP服务器

  1. 先建立本地yum源，见上述

  2. 安装vsftpd

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    [root@min-base ~]# yum -y install vsftpd

  3. 配置vsftpd

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    [root@min-base ~]# vi /etc/vsftpd/vsftpd.conf

    并增加匿名用户root目录（默认已经启用匿名访问）
    anon_root=/yum/   ---这里只想本地yum的目录

  4. 确认目录权限

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    [root@min-base ~]# ll -a /yum/
    total 8
    drwxr-xr-x.  4 root root   37 Dec 20 07:37 .
    dr-xr-xr-x. 18 root root 4096 Dec 20 06:32 ..
    drwxr-xr-x.  4 root root   36 Dec 20 07:08 yum-custom
    dr-xr-xr-x.  8 root root 4096 Dec 10  2015 yum-iso

  5. 关闭selinux

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    # 临时
    [root@min-base ~]# setenforce 0

    永久：
    [root@min-base ~]# vi /etc/selinux/config
    设置

    SELINUX=disabled
    重启

    [root@min-base ~]# reboot

  6. 启用vsftp

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    [root@min-base ~]# systemctl start vsftpd
    [root@min-base ~]# systemctl enable vsftpd
    Created symlink from /etc/systemd/system/multi-user.target.wants/vsftpd.service to /usr/lib/systemd/system/vsftpd.service.
    [root@min-base ~]#

  7. 另一台局域网内的机器验证是否可以使用

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    编辑repo
    [root@min-client ~]# vim /etc/yum.repos.d/CentOS-Media.repo

    [c7-media]
    name=CentOS-$releasever - Media
    baseurl=ftp://192.168.118.133/yum-custom
    gpgcheck=0
    enabled=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

    注：
    其中192.168.118.133为上面vsftp服务器地址

    验证：
    [root@min-client ~]# yum clean all
    Loaded plugins: fastestmirror
    Cleaning repos: c7-media
    Cleaning up everything
    [root@min-client ~]# yum makecache
    Loaded plugins: fastestmirror
    c7-media                                                                                                         | 3.0 kB  00:00
    (1/3): c7-media/filelists_db                                                                                     |  880 B  00:00
    (2/3): c7-media/other_db                                                                                         | 1.3 kB  00:00
    (3/3): c7-media/primary_db                                                                                       | 1.8 kB  00:00
    Determining fastest mirrors
    Metadata Cache Created
    [root@min-base ~]# yum -y install tree
    Loaded plugins: fastestmirror
    Loading mirror speeds from cached hostfile
    Resolving Dependencies
    --> Running transaction check
    ---> Package tree.x86_64 0:1.6.0-10.el7 will be installed
    --> Finished Dependency Resolution