Restart leave unassigned shards

Hi

I have to restart elasticsearch cluster nodes because of some timeout
exceptions

I did restart the nodes one by one there are 5 data nodes in cluster

But when I did that it leave some shards unassigned and I have no replicas

There is nothing help full in logs.

Can I get some help to know why these shards remain unassigned and any
solution

Thanks

--
You received this message because you are subscribed to the Google Groups "elasticsearch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/9b9fcede-16a6-4ca0-84d0-2d7cb58e523e%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.