Comment 2 for bug 1498867

> 1. Nova doesn’t use Memcached in MOS 7.0 – it isn’t configured in nova.conf to use memcached

I'm not sure what memcached usage you mean, but AFAIK it's used by Nova at least for VNC console authentication:

root@node-1:~# grep ^memcache /etc/nova/nova.conf
memcached_servers=192.168.0.5:11211,192.168.0.7:11211,192.168.0.11:11211
root@node-1:~# netstat -atnp | awk '$5~/:11211/{split($7,pid,"/");print pid[1]}' | sort -u | xargs -n1 -i ps -p {} -o user= -o comm= -o pid=
keystone apache2 39076
keystone apache2 39077
keystone apache2 39078
keystone apache2 39079
keystone apache2 39080
keystone apache2 39081
keystone apache2 39082
keystone apache2 39083
keystone apache2 39084
keystone apache2 39085
keystone apache2 39086
keystone apache2 39087
nova nova-consoleaut 5739
nova nova-api 6609
nova nova-api 6610
nova nova-api 6611
nova nova-api 6612
nova nova-api 6613
nova nova-api 6614
nova nova-api 6615
nova nova-api 6616
nova nova-api 6637
nova nova-api 6638
nova nova-api 6639
nova nova-api 6640
nova nova-api 6641
nova nova-api 6642
nova nova-api 6643
nova nova-api 6644