Aug 232012
目前Folsom的源，还是在ppa中，估计到9月27号正式发布后，才会正式发布。如果现在希望测试。
https://launchpad.net/~openstack-ubuntu-testing/+archive/folsom-trunk-testing
你需要先安装python-software-properties，这个工具
apt-get -y install python-software-properties
这个时候，你就可以添加ppa。运行命令,会提示你按一下 enter,回车键.
root@node06:~# add-apt-repository ppa:openstack-ubuntu-testing/folsom-trunk-testing You are about to add the following PPA to your system: More info: https://launchpad.net/~openstack-ubuntu-testing/+archive/folsom-trunk-testing Press [ENTER] to continue or ctrl-c to cancel adding it Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.obkMXJSCc9 --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv 0B91000371B127C2FF62A62781DCD8423B6F61A6 gpg: requesting key 3B6F61A6 from hkp server keyserver.ubuntu.com gpg: key 3B6F61A6: public key "Launchpad PPA for Openstack Ubuntu Testers" imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1)