Description

Sometimes, "One Control Plane and Many Workers" schema could be useful, but it may be not trivial to configure. Need to extend documentation to describe such schema

Solution

• Added "One Control Plane and Many Workers" schema description in "Non-HA Deployment Schemes" section
• Added justification why this schema might be useful
• Added schema diagram
  • It is added as HTML <img> to make it look good (appropriate size/resolution)
• Added example cluster.yaml for this schema
  • by default control-plane node does not have "worker" role, but it could be optionally added
  • ingress-nginx is bound to control-plane node using nodeSelector and tolerations (this will work in all cases, whether worker role is present or not)

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• There is no breaking changes, or migration patch is provided
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts