Don't bail out if write fails, keep retrying

daemon-common/log.py

@@ -227,8 +227,15 @@ class ZookeeperLogger(Thread):
                 date = ''
             # Add the message to the deque
             logs.append(f'{date}{message}')
+
+            while True:
+                try:
                     # Write the updated messages into Zookeeper
                     self.zkhandler.write([(('logs.messages', self.node), '\n'.join(logs))])
+                    break
+                except Exception:
+                    sleep(0.1)
+                    continue
         return
 
     def stop(self):