To keep an interactive cluster configuration even after a cluster has been terminated for more than 30 days, an administrator can pin the cluster. Up to 20 clusters can be pinned.
You can pin a cluster from the:
To pin or unpin a cluster, click the pin icon to the left of the cluster name.
Cluster detail page
To pin or unpin a cluster, click the pin icon to the right of the cluster name.
You can also invoke the Pin API endpoint to programmatically pin a cluster.