Merge "Resolve slow fact gathering when seed SNAT is off"

ansible/kolla-bifrost-hostvars.yml

@@ -19,10 +19,10 @@
       ipv4_interface_mac: "{% raw %}{{ extra.pxe_interface_mac | default }}{% endraw %}"
       ipv4_address: "{{ admin_oc_net_name | net_ip }}"
       ipv4_subnet_mask: "{{ admin_oc_net_name | net_mask }}"
-      # If the admin network does not have a gateway defined, use the
-      # seed as a gateway to allow external access until other networks have
-      # been configured.
-      ipv4_gateway: "{{ admin_oc_net_name | net_gateway or admin_oc_net_name | net_ip(seed_host) }}"
+      # If the admin network does not have a gateway defined and seed SNAT is
+      # enabled, use the seed as a gateway to allow external access until other
+      # networks have been configured. Otherwise, do not set any gateway.
+      ipv4_gateway: "{{ admin_oc_net_name | net_gateway or admin_oc_net_name | net_ip(seed_host) if seed_enable_snat | bool }}"
       ipv4_nameserver: "{{ resolv_nameservers }}"
       network_mtu: "{{ admin_oc_net_name | net_mtu or '1500' }}"
       vlan_id: "{{ '' if admin_oc_net_name == provision_oc_net_name else (admin_oc_net_name | net_vlan) }}"

releasenotes/notes/configdrive-gateway-62366f613e6eaac9.yaml

@@ -0,0 +1,14 @@
+---
+upgrade:
+  - |
+    If the admin network does not have a gateway defined and
+    ``seed_enable_snat`` is ``false``, which is the default, overcloud hosts
+    will not have a default gateway immediately after provisioning anymore. A
+    default gateway on another network can still be applied during the host
+    configuration step.
+fixes:
+  - |
+    Fixes slow fact gathering in some environments by not configuring the seed
+    host as the initial default gateway for overcloud hosts when
+    ``seed_enable_snat`` is ``false``, which is the default.
+    `LP#2039461 <https://bugs.launchpad.net/kolla-ansible/+bug/2039461>`__