The operator doesn’t accept 0. Changing the size in example-cass-dc-minimal.yaml doesn't work as I get error `The CassandraDatacenter "dc1" is invalid: spec.size: Invalid value: 1: spec.size in body should be greater than or equal to 1`
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Oleksandr Shulgin<mailto:oleksandr.shul...@zalando.de> Sent: 08 October 2020 05:40 To: User<mailto:user@cassandra.apache.org> Subject: Re: Reducing no. of nodes to 0 without losing data On Thu, Oct 8, 2020 at 12:21 AM Manu Chadha <manu.cha...@hotmail.com<mailto:manu.cha...@hotmail.com>> wrote: Hi I have created a Cassandra cluster on Kubernetes using cass-operator on gcp. It is for my personal experimentation. To avoid incurring cost, I want to stop the cluster when I am not using it and start it when I need it without losing data. Is there a way to do so? Would setting number of size to 0 in example-cassdc-minimal.yaml stop the compute resources without losing data? If I change the size to 3 again later, would the existing data be picked? Depending if the operator is going to accept the size as 0 at all, but most probably not with the following policy in your storage class, as in the example[1]: reclaimPolicy: Delete You need some persistent storage and a suitable reclaim policy. [1]: https://docs.datastax.com/en/cass-operator/doc/cass-operator/cassOperatorCloserLookConfiguration.html#CreateandapplyaStorageClass Regards, -- Alex
