我如何安装64位（x86_64）版本的MongoDB？
我在10gen.repo中指定了64bit：
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
但是当我运行：
yum install mongo-10gen mongo-10gen-server
这是32位（见i686），它被设置为安装。
Failed to set locale, defaulting to C Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.fdcservers.net * epel: mirror.steadfast.net * extras: mirror.fdcservers.net * rpmforge: mirror.rit.edu * updates: mirror.fdcservers.net 10gen | 951 B 00:00 Not using downloaded repomd.xml because it is older than what we have: Current : Tue Oct 30 15:55:02 2012 Downloaded: Tue Oct 30 15:54:51 2012 Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package mongo-10gen.i686 0:2.2.1-mongodb_1 will be installed ---> Package mongo-10gen-server.i686 0:2.2.1-mongodb_1 will be installed --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================== Installing: mongo-10gen i686 2.2.1-mongodb_1 10gen 42 M mongo-10gen-server i686 2.2.1-mongodb_1 10gen 6.5 M Transaction Summary ====================================================================================================================================================== Install 2 Package(s) Total download size: 48 M Installed size: 118 M
我想我知道为什么要安装32位版本：第一次我做了10gen.repo文件，我在那里指定了32位的链接，并安装了32位，后来我删除了。
也许有些东西被caching了 有人能帮我解决这个问题吗？
是的，这似乎是一个caching问题：
10gen | 951 B 00:00 Not using downloaded repomd.xml because it is older than what we have: Current : Tue Oct 30 15:55:02 2012 Downloaded: Tue Oct 30 15:54:51 2012
清除你的yumcaching，然后再试一次。
yum clean all