I've followed your howto and managed to get overcloud deployed in HA, thanks. However I cannot login to it (via CLI or Horizon) :
So I rebooted the controllers and now I cannot login through Provisioning network, seems some openvswitch bridge conf problem, heres my conf:
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 7c:a2:3e:fb:25:55 brd ff:ff:ff:ff:ff:ff
valid_lft 84562sec preferred_lft 84562sec
inet6 fe80::7ea2:3eff:fefb:2555/64 scope link
valid_lft forever preferred_lft forever
3: enp1s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ovs-system state UP qlen 1000
link/ether 7c:a2:3e:fb:25:56 brd ff:ff:ff:ff:ff:ff
inet6 fe80::7ea2:3eff:fefb:2556/64 scope link
valid_lft forever preferred_lft forever
4: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether c2:15:45:c8:b3:04 brd ff:ff:ff:ff:ff:ff
5: br-tun: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether e6:df:8e:fb:f0:42 brd ff:ff:ff:ff:ff:ff
6: vlan20: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether e6:79:56:5d:07:f2 brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
valid_lft forever preferred_lft forever
inet6 fe80::e479:56ff:fe5d:7f2/64 scope link
valid_lft forever preferred_lft forever
7: vlan40: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether ea:43:69:c3:bf:a2 brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
inet6 fe80::e843:69ff:fec3:bfa2/64 scope link
valid_lft forever preferred_lft forever
8: vlan174: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 16:bf:9e:e0:9c:e0 brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
valid_lft forever preferred_lft forever
inet6 fe80::14bf:9eff:fee0:9ce0/64 scope link
valid_lft forever preferred_lft forever
9: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 7c:a2:3e:fb:25:56 brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
inet6 fe80::7ea2:3eff:fefb:2556/64 scope link
valid_lft forever preferred_lft forever
10: vlan50: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether da:15:7f:b9:72:4b brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
inet6 fe80::d815:7fff:feb9:724b/64 scope link
valid_lft forever preferred_lft forever
11: vlan30: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 7a:b3:4d:ad:f1:72 brd ff:ff:ff:ff:ff:ff
valid_lft forever preferred_lft forever
valid_lft forever preferred_lft forever
inet6 fe80::78b3:4dff:fead:f172/64 scope link
valid_lft forever preferred_lft forever
12: br-int: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
link/ether b6:88:6b:d7:3a:4c brd ff:ff:ff:ff:ff:ff