Hi all,
This morning I have had my instance disk filled up by influxdb 
So I had a look to the shard groups and I have seen that I had 10 of them for db including the _internal. I have deleted the old groups and free-up space on the disk.  So, I was wondering if there is any way to limit the number of shard groups to 3, for example
> show shard groups
name: shard groups
id  database          retention_policy start_time           end_time             expiry_time
--  --------          ---------------- ----------           --------             -----------
102 _internal         monitor          2018-11-19T00:00:00Z 2018-11-20T00:00:00Z 2018-11-27T00:00:00Z
103 network_telemetry autogen          2018-11-19T00:00:00Z 2018-11-26T00:00:00Z 2018-11-26T00:00:00Z



