fuel驗證網絡正确性時，報錯如下：
Repo availability verification using public network failed on following nodes Untitled (99:1b).
Following repos are not available - http://archive.ubuntu.com/ubuntu/, http://mirror.fuel-infra.org/mos-repos/ubuntu//.
Check your public network settings and availability of the repositories from public network. Please examine nailgun and astute logs for additional details.
原因分析：
在fuel_master上沒有運作
fuel-createmirror
建立本地源（針對fuel9而言，反正我之前使用fuel11是無法運作這一行指令。谷歌了下好像是fuel10以後不支援這條指令），就直接開始建立openstack環境，導緻設定中的Repositories使用的網絡連結，而不是本地的源
解決方案：
進入設定-基礎配置-Repositories，看看你的配置是不是如下圖：
将其修改為如下：
deb http://10.20.0.2:8080/mirrors/ubuntu trusty main multiverse restricted universe
deb http://10.20.0.2:8080/mirrors/ubuntu trusty-updates main multiverse restricted universe
deb http://10.20.0.2:8080/mirrors/ubuntu trusty-security main multiverse restricted universe
deb http://10.20.0.2:8080/mirrors/mos-repos/ubuntu/9.0 mos9.0 main restricted
deb http://10.20.0.2:8080/mirrors/mos-repos/ubuntu/9.0 mos9.0-updates main restricted
deb http://10.20.0.2:8080/mirrors/mos-repos/ubuntu/9.0 mos9.0-security main restricted
deb http://10.20.0.2:8080/mirrors/mos-repos/ubuntu/9.0 mos9.0-holdback main restricted
deb http://10.20.0.2:8080/mitaka-9.0/ubuntu/auxiliary auxiliary main restricted
然後重新檢驗網絡正确性，正确。