Comment 4 for bug 1394195

Currently only 'horizon' and 'mysql' backends use L7 checks.

For the following backends:

cinder-api
glance-api
heat-api
heat-api-cfn
heat-api-cloudwatch
keystone-1
keystone-2
neutron
nova-api-2
nova-metadata-api

it could be enabled with the following options right away (tested on live Juno env):

option => ['httpchk', 'httplog','httpclose'],

In addition I suggest to use these options to lower HTTP check rate (default interval is 2s):

balancermember_options => inter 10s fastinter 2s downinter 3s rise 3 fall 3