<p>When I run <code>gcloud container clusters create cassandra-cluster</code> command, I see that three <code>100GB</code> disks are getting created when I create the cluster. I suppose these disks are used by <code>K8s</code> and <code>GCP</code>. For what purposes are these disks used? Isn't 100GB too big? Could/should be changed to optimise cost?</p>
<pre><code>    gke-cassandra-cluster-default-pool-8ae97f65-4sts        Standard persistent disk    100 GB  europe-west4-a  
gke-cassandra-cluster-default-pool-8ae97f65-4sts    
None
gke-cassandra-cluster-default-pool-8ae97f65-hwd3        Standard persistent disk    100 GB  europe-west4-a  
gke-cassandra-cluster-default-pool-8ae97f65-hwd3    
None
gke-cassandra-cluster-default-pool-8ae97f65-s5lw        Standard persistent disk    100 GB  europe-west4-a  
gke-cassandra-cluster-default-pool-8ae97f65-s5lw    
None
</code></pre>

Manu Chadha
<p>These machines will be used for Kubernetes nodes, 100 GB is the default value as I remembered. Nodes store container logs, docker images, etc. GCP probably take safe size for default because image sizes are high depending on the variety. You could set disk properties while <a href="https://cloud.google.com/sdk/gcloud/reference/container/clusters/create" rel="nofollow noreferrer">creating</a>. Also, you could create and change your node pool with a proper disk.</p>
