Add logging for ActionServe

cmd/apiary.go

@@ -235,12 +235,17 @@ func ActionServe(c *cli.Context) error {
 
 		ticker := time.NewTicker(timeout / 2)
 		for {
+			// TODO: Consider using ctx with deadline to avoid healthcheck taking more time than ticker,
+			// which will result in being killed by watchdog.
 			healthy := s.IsHealthy()
 			select {
 			case <-ticker.C:
 				if healthy == nil {
 					daemon.SdNotify(false, daemon.SdNotifyWatchdog)
+					continue
 				}
+				// TODO: If unhealthy, should we retry healthcheck immediately, otherwise service will most likely get killed by watchdog.
+				loggers.rootLogger.Errorw("Store reported not healthy, might get killed by watchdog.", "err", healthy)
 			case <-notifyCtx.Done():
 				loggers.rootLogger.Debugw("Notify context cancelled.")
 				return