From 9980a8f891edac8f21d0cde9ee1e756a40c7be3b Mon Sep 17 00:00:00 2001
From: Pierre Riteau <pierre@stackhpc.com>
Date: Mon, 16 Oct 2023 17:31:05 +0200
Subject: [PATCH] Resolve slow fact gathering when seed SNAT is off
Stop configuring the seed host as gateway when seed SNAT is disabled
(which is the default since Xena), otherwise overcloud hosts may take a
long time to gather facts until their network configuration is applied
(probably because DNS servers are thought to be reachable until the
gateway is changed or removed).
Closes-Bug: #2039461
Change-Id: Ib847d3420dee374cec067cd8af519b510be04120
---
ansible/kolla-bifrost-hostvars.yml | 8 ++++----
.../configdrive-gateway-62366f613e6eaac9.yaml | 14 ++++++++++++++
2 files changed, 18 insertions(+), 4 deletions(-)
create mode 100644 releasenotes/notes/configdrive-gateway-62366f613e6eaac9.yaml
diff --git a/ansible/kolla-bifrost-hostvars.yml b/ansible/kolla-bifrost-hostvars.yml
index e43bcd7e6..c74a4f88b 100644
--- a/ansible/kolla-bifrost-hostvars.yml
+++ b/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) }}"
diff --git a/releasenotes/notes/configdrive-gateway-62366f613e6eaac9.yaml b/releasenotes/notes/configdrive-gateway-62366f613e6eaac9.yaml
new file mode 100644
index 000000000..f43684f03
--- /dev/null
+++ b/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>`__