From e17640cb87a49b22f380e73e79c6ff24604a72fb Mon Sep 17 00:00:00 2001
From: Gregory Thiemonge <gthiemon@redhat.com>
Date: Wed, 29 May 2024 14:18:40 +0000
Subject: [PATCH] Wait for DB writes to propagate (causality checks)

Fix some inconsistencies in multi-master mode (based on
https://github.com/openstack-k8s-operators/cinder-operator/pull/392)

Jira: OSPRH-7369
---
 templates/octavia/config/octavia.conf                  | 4 ++++
 templates/octaviaamphoracontroller/config/octavia.conf | 4 ++++
 templates/octaviaapi/config/octavia.conf               | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/templates/octavia/config/octavia.conf b/templates/octavia/config/octavia.conf
index 1a3b6df5..b5b15f62 100644
--- a/templates/octavia/config/octavia.conf
+++ b/templates/octavia/config/octavia.conf
@@ -12,6 +12,10 @@ default_listener_tls_versions=TLSv1.2,TLSv1.3
 default_pool_tls_versions=TLSv1.2,TLSv1.3
 [database]
 connection = {{ .DatabaseConnection }}
+# Wait for writes to complete when doing a read, update, or insert
+# Relevant for multi-master deployments so that workers table works as intended
+# https://mariadb.com/docs/server/ref/mdb/system-variables/wsrep_sync_wait/
+mysql_wsrep_sync_wait = 7
 [health_manager]
 health_update_threads=4
 stats_update_threads=4
diff --git a/templates/octaviaamphoracontroller/config/octavia.conf b/templates/octaviaamphoracontroller/config/octavia.conf
index a38e95c0..d9465d35 100644
--- a/templates/octaviaamphoracontroller/config/octavia.conf
+++ b/templates/octaviaamphoracontroller/config/octavia.conf
@@ -8,6 +8,10 @@ graceful_shutdown_timeout=600
 [api_settings]
 [database]
 connection = {{ .DatabaseConnection }}
+# Wait for writes to complete when doing a read, update, or insert
+# Relevant for multi-master deployments so that workers table works as intended
+# https://mariadb.com/docs/server/ref/mdb/system-variables/wsrep_sync_wait/
+mysql_wsrep_sync_wait = 7
 [health_manager]
 heartbeat_key={{ .HeartbeatKey }}
 health_update_threads=4
diff --git a/templates/octaviaapi/config/octavia.conf b/templates/octaviaapi/config/octavia.conf
index 5906565a..009a1e05 100644
--- a/templates/octaviaapi/config/octavia.conf
+++ b/templates/octaviaapi/config/octavia.conf
@@ -12,6 +12,10 @@ default_listener_tls_versions=TLSv1.2,TLSv1.3
 default_pool_tls_versions=TLSv1.2,TLSv1.3
 [database]
 connection = {{ .DatabaseConnection }}
+# Wait for writes to complete when doing a read, update, or insert
+# Relevant for multi-master deployments so that workers table works as intended
+# https://mariadb.com/docs/server/ref/mdb/system-variables/wsrep_sync_wait/
+mysql_wsrep_sync_wait = 7
 [health_manager]
 health_update_threads=4
 stats_update_threads=4