Add support for pod disruption budget

[aledbf]

Description

Enable pod disruption budget to avoid the migration of multiple replicas at the same time when we need to drain nodes.

fixes ENG-725

Summary generated by Copilot

🤖 Generated by Copilot at 44ab5ea

Add pod disruption budget for ws-manager-mk2 component. This improves the availability and resilience of the workspace management service by limiting the impact of voluntary pod disruptions.

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - aledbf-pdb
• 🔗 URL - aledbf-pdb.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - aledbf-pdb-gha.15854

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[aledbf]

/gh run recreate-vm=true

Comment triggered a workflow run

Started workflow run: 5943714160

• recreate_vm: true

[aledbf]

/gh run recreate-vm=true

Comment triggered a workflow run

Started workflow run: 5943956377

• recreate_vm: true

[aledbf]

/gh run recreate-vm=true

Comment triggered a workflow run

Started workflow run: 5944493282

• recreate_vm: true

[aledbf]

root@preview-aledbf-pdb:/home/ubuntu# k get pdb
NAME                    MIN AVAILABLE   MAX UNAVAILABLE   ALLOWED DISRUPTIONS   AGE
blobserve-pdb           N/A             1                 1                     2m13s
dashboard-pdb           N/A             1                 1                     2m
node-labeler-pdb        N/A             1                 1                     2m19s
openvsx-proxy-pdb       N/A             1                 1                     117s
proxy-pdb               N/A             1                 1                     105s
public-api-server-pdb   N/A             1                 1                     115s
server-pdb              N/A             1                 1                     2m4s
ws-manager-mk2-pdb      N/A             1                 1                     102s
ws-proxy-pdb            N/A             1                 1                     2m26s

[easyCZ]

LGTM. The one downside is that right now this is only configurable in code and should we need to remove/adjust it, we'll need a new version of gitpod

[akosyakov]

approved to unblock

but short description why such configuration is specified would be helpful to understand implications