On 2016-05-23 15:29:23 +0800 (+0800), 刘庆 wrote: [...] > install-distro-packages take a lot of time in my environment [...] Not a direct answer to your question, but we speed up package installation by pre-caching packages in our nodepool images with these diskimage-builder elements: http://git.openstack.org/cgit/openstack-infra/project-config/tree/nodepool/elements/cache-bindep http://git.openstack.org/cgit/openstack-infra/project-config/tree/nodepool/elements/cache-devstack -- Jeremy Stanley