同步本地源可以採用兩種方法：
1.rsync
2.reposync


第一種方案參考如下段程式：
#!/bin/bash
#Script name:rsync_yumrepo.sh
RsyncBin="/usr/bin/rsync"
RsyncPerm='-avrt --delete --no-iconv --bwlimit=1000'


Centos_7_epel='/data/yum_repo/Centos-7/epel/'


LogFile='/data/yum_repo/rsync_yum_log'
Date=`date +%Y-%m-%d`
#check
function check {
if [ $? -eq 0 ];then
    echo -e "\033[1;32mRsync is success!\033[0m" >>$LogFile/$Date.log
else
    echo -e "\033[1;31mRsync is fail!\033[0m" >>$LogFile/$Date.log
fi
}
if [ ! -d "$LogFile" ];then
    mkdir $LogFile
fi
#rsync centos 5 base
#echo 'Now start to rsync centos 5 base!' >>$LogFile/$Date.log
#$RsyncBin $RsyncPerm rsync://mirrors.yun-idc.com/centos/5/os/ $Centos_5_base >>$LogFile/$Date.log
#check
#rsync centos 5 epel
echo 'Now start to rsync centos 5 epel!' >>$LogFile/$Date.log
$RsyncBin $RsyncPerm --exclude=SRPMS/ --exclude=ppc64/ rsync://dl.fedoraproject.org/pub/epel/7/x86_64 $Centos_7_epel >>$LogFile/$Date.log
check




語法為：rsync  [option] resource destination


rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you
are welcome to redistribute it under certain conditions.  See the GNU
General Public Licence for details.


rsync is a file transfer program capable of efficient remote update
via a fast differencing algorithm.


Usage: rsync [OPTION]... SRC [SRC]... DEST
  or   rsync [OPTION]... SRC [SRC]... [

[email protected]]HOST:DEST
  or   rsync [OPTION]... SRC [SRC]... [[email protected]]HOST::DEST
  or   rsync [OPTION]... SRC [SRC]... rsync://[[email protected]]HOST[:PORT]/DEST
  or   rsync [OPTION]... [[email protected]]HOST:SRC [DEST]
  or   rsync [OPTION]... [[email protected]]HOST::SRC [DEST]
  or   rsync [OPTION]... rsync://[

[email protected]]HOST[:PORT]/SRC [DEST]
The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect
to an rsync daemon, and require SRC or DEST to start with a module name.


rsync將會把resource中的RPM包下載到指定的目錄中。




2.reposync
reposync比價簡單，其簡單用法為rsync -repoid repository-id


可以用yum repolist檢視repo的ID
yum repolist 
[

[email protected] openstack-common]# yum repolist
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
repo id                                                         repo name                                                                                         status
centos-iso                                                      CentOS-ISO                                                                                        3576
epel                                                            Extra Packages for Enterprise Linux 7 - x86_64                                                    8327
epel-debuginfo                                                  Extra Packages for Enterprise Linux 7 - x86_64 - Debug                                            1919
openstack-kilo                                                  OpenStack Kilo Repository                                                                          280
openstack-kilo-common                                           openstack kilo common                                                                              493
repolist: 14595


如上，同步epel到本地當前目錄：
reposync -repoid=epel


reposync的前提是先在系統裡面安裝repository庫，然後到遠端repository去下載rpm包。例如可以先安裝rdo的openstack-kilo庫：
yum insatll  http://rdo.fedorapeople.org/openstack-kilo/rdo-release-kilo.rpm
安裝完成之後將會在/etc/yum.repos.d目錄下生成openstack-kilo.repo的檔案，此時即可yum repolist 檢視到。




3.製作本地yum源


簡單建立repository的命令如下：
createrepo -update --baseurl=packages_dir packages_dir #packages_dir是包含所有rpm包的絕對路徑


此命令將會把package_dir目錄下的包生成repository，在該目錄下會生成repodata子目錄，然後在/etc/yum.repos.d目錄下編輯.repo檔案
[openstack-kilo]
name=OpenStack Kilo Repository
#baseurl=http://repos.fedorapeople.org/repos/openstack/openstack-kilo/el7/
baseurl=file:///data/yum_repo/rdo-openstack-kilo/openstack-kilo
skip_if_unavailable=0
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-RDO-kilo


然後重新整理：yum clean all；yum makecache即可。