File README.SUSE of Package graphite-web
After install you must init graphite.db.
Normaly:
django-admin makemigrations --pythonpath='/var/lib/graphite/webapp' --settings=graphite.settings
django-admin migrate auth --pythonpath='/var/lib/graphite/webapp' --settings=graphite.settings
django-admin migrate --run-syncdb --pythonpath='/var/lib/graphite/webapp' --settings=graphite.settings
django-admin createsuperuser --pythonpath='/var/lib/graphite/webapp' --settings=graphite.settings
But the first three things are done at package installation.
You only can do if you want. It's not needed for icingaweb2-module-graphite:
django-admin createsuperuser --pythonpath='/var/lib/graphite/webapp' --settings=graphite.settings
You must start carbon-cache anyway:
systemctl enable carbon-cache
systemctl start carbon-cache