Remove dedicated nodepool for OHW after event

[sgibson91]

• ref: [EVENT] OceanHackWeek 2023 #2879
• reverts Create a dedicated nodepool for OHW event #2921 and [EVENT] OHW nodepool scaleup #2935

[github-actions]

Merging this PR will trigger the following deployment actions.

Support and Staging deployments

Cloud Provider	Cluster Name	Upgrade Support?	Reason for Support Redeploy	Upgrade Staging?	Reason for Staging Redeploy
gcp	2i2c	No		Yes	Following prod hubs require redeploy: ohw

Production deployments

Cloud Provider	Cluster Name	Hub Name	Reason for Redeploy
gcp	2i2c	ohw	Following helm chart values files were modified: ohw.values.yaml

[sgibson91]

Output of tf plan

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  - destroy

Terraform will perform the following actions:

  # google_container_node_pool.notebook["ohw"] will be destroyed
  # (because key ["ohw"] is not in for_each map)
  - resource "google_container_node_pool" "notebook" {
      - cluster                     = "pilot-hubs-cluster" -> null
      - id                          = "projects/two-eye-two-see/locations/us-central1-b/clusters/pilot-hubs-cluster/nodePools/nb-ohw" -> null
      - initial_node_count          = 4 -> null
      - instance_group_urls         = [
          - "https://www.googleapis.com/compute/v1/projects/two-eye-two-see/zones/us-central1-b/instanceGroupManagers/gke-pilot-hubs-cluster-nb-ohw-8a6ced79-grp",
        ] -> null
      - location                    = "us-central1-b" -> null
      - managed_instance_group_urls = [
          - "https://www.googleapis.com/compute/v1/projects/two-eye-two-see/zones/us-central1-b/instanceGroups/gke-pilot-hubs-cluster-nb-ohw-8a6ced79-grp",
        ] -> null
      - name                        = "nb-ohw" -> null
      - node_count                  = 4 -> null
      - node_locations              = [
          - "us-central1-b",
        ] -> null
      - project                     = "two-eye-two-see" -> null
      - version                     = "1.26.5-gke.1400" -> null

      - autoscaling {
          - location_policy      = "BALANCED" -> null
          - max_node_count       = 100 -> null
          - min_node_count       = 4 -> null
          - total_max_node_count = 0 -> null
          - total_min_node_count = 0 -> null
        }

      - management {
          - auto_repair  = true -> null
          - auto_upgrade = false -> null
        }

      - node_config {
          - disk_size_gb      = 100 -> null
          - disk_type         = "pd-balanced" -> null
          - guest_accelerator = [] -> null
          - image_type        = "COS_CONTAINERD" -> null
          - labels            = {
              - "2i2c.org/community"           = "ohw"
              - "hub.jupyter.org/node-purpose" = "user"
              - "k8s.dask.org/node-purpose"    = "scheduler"
            } -> null
          - local_ssd_count   = 0 -> null
          - logging_variant   = "DEFAULT" -> null
          - machine_type      = "n2-highmem-16" -> null
          - metadata          = {
              - "disable-legacy-endpoints" = "true"
            } -> null
          - oauth_scopes      = [
              - "https://www.googleapis.com/auth/cloud-platform",
            ] -> null
          - preemptible       = false -> null
          - resource_labels   = {
              - "community" = "ohw"
            } -> null
          - service_account   = "[email protected]" -> null
          - spot              = false -> null
          - tags              = [] -> null
          - taint             = [
              - {
                  - effect = "NO_SCHEDULE"
                  - key    = "hub.jupyter.org_dedicated"
                  - value  = "user"
                },
              - {
                  - effect = "NO_SCHEDULE"
                  - key    = "2i2c.org/community"
                  - value  = "ohw"
                },
            ] -> null

          - shielded_instance_config {
              - enable_integrity_monitoring = true -> null
              - enable_secure_boot          = false -> null
            }

          - workload_metadata_config {
              - mode = "GKE_METADATA" -> null
            }
        }

      - upgrade_settings {
          - max_surge       = 1 -> null
          - max_unavailable = 0 -> null
          - strategy        = "SURGE" -> null
        }
    }

Plan: 0 to add, 0 to change, 1 to destroy.

[sgibson91]

Applied successfully!

[github-actions]

🎉🎉🎉🎉

Monitor the deployment of the hubs here 👉 https://github.com/2i2c-org/infrastructure/actions/runs/5867401433