一.只下载不安装
yum install --downloadonly --downloaddir=/local-basic/ mysql-community-server
--downloadonly 只下载不安装
--downloaddir 指定rpm包的下载路径
二.开启yum本地缓存
开启yum本地缓存后，所有通过yum安装的软件包，yum都会把rpm包保存到本地相应目录下
[root@yumcangku etc]# vim /etc/yum.conf
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0 #这里的参数是设置是否开启本地缓存，0代表不开启，1代表开启
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=23&ref=http://bugs.centos.org/bug_report_page.php?category=yum
distroverpkg=centos-release
这里是yum本地缓存rpm包的路径
[root@yumcangku etc]# cd /var/cache/yum/x86_64/7/
[root@yumcangku 7]# ls
base extras mysql-connectors-community nginx timedhosts.txt webtatic
epel mysql57-community mysql-tools-community timedhosts updates
