root@controller:/home/administrator/# apt-get purge nova-novncproxy novnc nova-api nova-ajax-console-proxy nova-cert nova-conductor nova-consoleauth nova-doc nova-scheduler python-novaclient
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  websockify libjs-swfobject
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  nova-ajax-console-proxy* nova-api* nova-cert* nova-conductor* nova-consoleauth* nova-doc* nova-novncproxy* nova-scheduler* novnc* python-novaclient*
0 upgraded, 0 newly installed, 10 to remove and 101 not upgraded.
8 not fully installed or removed.
After this operation, 8,084 kB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 211782 files and directories currently installed.)
Removing nova-ajax-console-proxy ...
Removing nova-api ...
Purging configuration files for nova-api ...
Removing nova-cert ...
Purging configuration files for nova-cert ...
Removing nova-conductor ...
Purging configuration files for nova-conductor ...
Removing nova-consoleauth ...
Purging configuration files for nova-consoleauth ...
Removing nova-novncproxy ...
Purging configuration files for nova-novncproxy ...
Removing nova-scheduler ...
Purging configuration files for nova-scheduler ...
Removing nova-doc ...
Removing novnc ...
Removing python-novaclient ...
Purging configuration files for python-novaclient ...
Processing triggers for man-db ...
Processing triggers for ureadahead ...
Processing triggers for doc-base ...
Processing 1 removed doc-base file...
Setting up nova-common (1:2014.1-0ubuntu1~cloud0) ...
chown: cannot access `/etc/nova': No such file or directory
dpkg: error processing nova-common (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 nova-common
E: Sub-process /usr/bin/dpkg returned an error code (1)