client0 := rotator0.config.client
	client0.Secrets(rotator0.config.caStorageNamespace).Delete(context.TODO(), rotator0.config.secretName, metav1.DeleteOptions{})

	rotator0.checkAndRotateRootCert()
	caSecret, err := client0.Secrets(rotator0.config.caStorageNamespace).Get(context.TODO(), rotator0.config.secretName, metav1.GetOptions{})
	if !errors.IsNotFound(err) || caSecret != nil {

			rootCertRotatorLog.Info("Check and rotate root cert.")
			rotator.checkAndRotateRootCert()
		case _, ok := <-stopCh:
			if !ok {
				rootCertRotatorLog.Info("Received stop signal, so stop the root cert rotator.")
				if ticker != nil {
					ticker.Stop()
				}
				return
			}
		}
	}
}

// checkAndRotateRootCert decides whether root cert should be refreshed, and rotates