[Decommission Hub] pangeo-hubs

[sgibson91]

Summary

Info

• Community Representative:
• Link to New Hub issue:
• Proposed end date:

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)
• 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

Phase III - Cluster Removal

This phase is only necessary for single hub clusters.

• Remove the cluster's datasource from the central Grafana with:
  • deployer grafana central-ds remove <cluster_name>
• Run terraform plan -destroy and terraform apply from the appropriate workspace, to destroy the cluster
• Delete the terraform workspace: terraform workspace delete <NAME>
• Delete the terraform values file under the projects folder associated with the relevant cloud provider (e.g. terraform/gcp/projects/ for GCP)
• Remove the associated config/clusters/<cluster_name> directory and all its contents
• Remove the cluster from CI:
  • deploy-hubs.yaml
  • deploy-grafana-dashboards.yaml
• Remove A record from Namecheap account

Definition of Done

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

• The hub and cluster, if relevant, are removed