grafana_opts = [
    cfg.StrOpt(
        'url', default='http://grafana.example.org',
        help='URL for grafana server.'),
    cfg.StrOpt(
        'apikey', default='',
        help='API key for access grafana.'),
]

grafana_group = cfg.OptGroup(
    name='grafana', title='Grafana options')
list_opts = lambda: [(grafana_group, grafana_opts), ]

CONF = cfg.CONF
CONF.register_group(grafana_group)
CONF.register_opts(grafana_opts, group=grafana_group)