Devstack Apache2/keystone not started

In Devstack./rejoin-stack.sh found Apache2/keystone not started

Keystone does not start after manually starting the APACH2 service alone

sudo service apache2 restart

Keystone Service uses Apache Mod_wsgi, in general apache2 services Restart will let Keystone restart,

At this time because/etc/apache2/sites-available under the Keystone did not link to/etc/apache2/sites-enabled below

Cd/etc/apache2/sites-enabled

Ln-s. /sites-available/keystone.conf keystone.conf

At this time restart Apache2 service, Keystone also followed up.

Devstack Apache2/keystone not started