Primary shard not available

I do not see any incomplete recoveries in that output.

However, you seem to have far too many shards for the amount of data you are dealing with. You have multiple daily indices, each with 15 shards, with many shards are smaller than 1MB in size and no shards larger than 400MB. This will certainly have an impact on your cluster performance. This article gives advice on sharding, but the main point is you should aim for shards to be around 40GB in size. I think you could reasonably reduce the number_of_shards parameter to 1 on all these indices, and extend some of the daily indices to be weekly or monthly instead.

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