Set is_master metric to 0 for when starting up. (#920)

Without this, no metric is exported if the goroutine never gets elected, so the alerting for "no leader" doesn't work correctly.
google · May 4, 2022 · ae7d4b7 · ae7d4b7
1 parent 242386d
commit ae7d4b7
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/trillian/migrillian/core/controller.go b/trillian/migrillian/core/controller.go
@@ -162,6 +162,7 @@ func (c *Controller) RunWhenMaster(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
+	metrics.isMaster.Set(0, c.label)
 	defer func(ctx context.Context) {
 		metrics.isMaster.Set(0, c.label)
 		if err := el.Close(ctx); err != nil {