T8293: Add ability to set timeout for high-availability health-check

Setting a timeout allows VRRP health-check scripts to run longer than the set interval.
Without timeout, keepalived considers the script as failed after interval seconds.
With timeout set higher than interval, the script has more time to complete
before being marked as failed and transitioning VRRP to FAULT state.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/conf_mode/high-availability.py b/src/conf_mode/high-availability.py
index 48a7d8abc..175929547 100755
--- a/src/conf_mode/high-availability.py
+++ b/src/conf_mode/high-availability.py
@@ -188,6 +188,15 @@ def _validate_health_check(group, group_config):
         # to avoid generating useless config statements in keepalived.conf
         del group_config["health_check"]
 
+    if 'timeout' in group_config.get('health_check', {}):
+        interval = int(group_config['health_check']['interval'])
+        timeout = int(group_config['health_check']['timeout'])
+        if timeout < interval:
+            Warning(
+                f'Health check timeout ({timeout}s) is less than interval ({interval}s) '
+                f'for VRRP group "{group}", script may be killed before completion'
+            )
+
 
 def generate(ha):
     if not ha or 'disable' in ha: