1、執行nova list命令報錯：

[email protected]:~# nova list

ERROR: The server has either erred or isincapable of performing the requested operation. (HTTP 500) (Request-ID: req-572480f3-aef6-4c5b-a3f1-9ba676761935)

最後定位出來的原因是：

/etc/quantum/plugins/openvswitch/ovs_quantum_plugin.ini檔案中firewall_driver沒有配置或配置錯誤導致。

[SECURITYGROUP]

firewall_driver =quantum.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

修改正確後，需要重啟quantum、nova服務：

service quantum-server restart

cd /etc/init.d/; for i in $( ls nova-* );do sudo service $i restart; done

2、fail to spawn

出現該問題時應查詢compute節點上的/var/log/nova/nova-compute.log檔案，這種

情況的成因很多，羅列如下：

情況一： CPU不支援VT技術導致kvm啟動失敗

解決方法：nova.conf中libvirt_type改為qemu  。

情況二： nova-compute服務的許可權不夠，導致建立iptables規則時失敗

解決方法：改變nova-compute啟動的使用者為root，或者開通當前nova-compute服務

的宿主使用者的sudo命令nopassword許可權。

情況三： get image時出現問題，找不到映象檔案

解決方法：檢查glance伺服器，同時確保compute節點能正常地訪問到glance節點。

3、create tenant failed

Expecting authentication method via

 either a service token, --os-token or env[OS_SERVICE_TOKEN],

  orcredentials, --os-username or env[OS_USERNAME].

沒有設定環境變數：

. creds 檔案

export OS_TENANT_NAME=admin

export OS_USERNAME=admin

export OS_PASSWORD=admin_pass

4、CRITICAL glance [-] ValueError

mysql報錯：

2014-05-13 20:33:06.083 13951 CRITICALglance [-] ValueError: Tables "migrate_version" have non utf8collation, please make sure all tables are CHARSET=utf8

解決：

進入相應的庫，對資料庫下的migrate_version表進行修改字元編碼

ALTER TABLE `migrate_version` DEFAULTCHARACTER SET utf8 COLLATE utf8_general_ci;

或者直接對整個庫進行修改字元編碼

ALTER DATABASE `glance` DEFAULT CHARACTERSET utf8 COLLATE utf8_general_ci;

5、Max retries exceeded with url: /v2.0/tokens

I've installeddevstack on a VM on my laptop, and at first I was able to log in to the Horizondashboard. But I stopped my VM and restarted it later, now when I log in theauthentication fails. My horizon_error.log shows the following: DEBUG:openstack_auth.backend:AuthorizationFailed: HTTPConnectionPool(host='127.0.0.1', port=5000): Max retries exceededwith url: /v2.0/tokens (Caused by <class 'socket.error'>: [Errno 111]Connection refused).

ladquin in#openstack-101 helped me out with this advice: "go to your devstack folderand run './rejoin-stack.sh'"

I had two devstackfolders though... make sure the one you use has a stack-screenrc file in it. You can do locate stack-screenrc to find the right folder.

進入devstack/目錄，執行'./rejoin-stack.sh 指令碼