aws: log when multiple subnets found in the same AZ

Signed-off-by: Alexander Yastrebov <[email protected]>

aws/adapter.go

@@ -946,11 +946,14 @@ func (a *Adapter) FindLBSubnets(scheme string) []string {
  continue
  }
 
- // If we have two subnets for the same AZ we arbitrarily choose
+ // If we have two subnets in the same AZ we arbitrarily choose
  // the one that is first lexicographically.
- if strings.Compare(existing.id, subnet.id) > 0 {
+ if subnet.id < existing.id {
  subnetsByAZ[subnet.availabilityZone] = subnet
  }
+
+ log.Warnf("Found subnets %s and %s with tag %s in availability zone %s, using %s",
+ existing.id, subnet.id, tagName, subnet.availabilityZone, subnetsByAZ[subnet.availabilityZone])
  }
 
  subnetIDs := make([]string, 0, len(subnetsByAZ))