[Decommission] NCAR-CISL hub

[Gman0909]

Summary

After an email exchange with Nick Cote (cc: John Clyne), @colliand requests that the P&S team arrange to shut down the NCAR-CISL hub. Our contact has confirmed that the data there can be safely deleted.

Info

• Community Representative: Nick Cote (cc: John Clyne)
• Link to New Hub issue: [Request deployment] New Hub: NCAR-CISL for UCAR #2523
• Proposed end date: Earliest convenience
• Cluster the hub is on: 2i2c-aws-us
• AirTable Engagement: NCAR Pilot (2023)

Task List

Phase I

• Confirm with Community Representative that the hub is no longer in use and it's safe to decommission
• Confirm if there is any data to migrate from the hub before decommissioning
  • If yes, confirm where the data should be migrated to
    • Confirm a 2i2c Engineer has access to the destination in order to complete the data migration
  • If no, confirm it is ok to delete all the data stored in the user home directories

Phase II - Hub Removal

(These steps are described in more detail in the docs at https://infrastructure.2i2c.org/hub-deployment-guide/hubs/delete-hub/)

• Manage existing home directory data (migrate data from the hub or delete it)
• Manage existing cloud bucket data (migrate data, or delete it)
  • This hub has a scratch bucket that will need to be deleted in terraform
• Delete the hub's authentication application on GitHub or CILogon (note CILogon removal requires the hub config in place)
• Remove the appropriate config/clusters/<cluster_name>/<hub_name>.values.yaml files. A complete list of relevant files can be found under the appropriate entry in the associated cluster.yaml file.
• Remove the associated hub entry from the config/clusters/<cluster_name>/cluster.yaml file.
• Remove the hub deployment
  • TIP: Run deployer use-cluster-credentials <cluster_name> before running the commands below
  • helm --namespace HUB_NAME delete HUB_NAME
  • kubectl delete namespace HUB_NAME

This hub is also on AWS so will need to:

• Delete the hub-specific node groups from eksctl

Definition of Done

A non-specific, pre-defined list of tasks that should be considered before marking the task complete.

• All the tasks above have been completed
• Existing functionality was not broken