Decrease instance initialisation time

[BobyMCbobs]

Make it faster!

Time is spend in several areas that could be improved

• Equinix Metal instance creation time (2mins)
  • unavoidable
  • varies between cloud providers
• dependency installation (2mins)
  • prebuild images?
  • use Talos?
• Kubernetes init (0m30s)
  • unavoidable
  • not the biggest task
• Environment container image pull (2m33s)
  • set up another registry pull proxy
  • time until Environment is live after kubectl apply
• powerdns launch (3m0s)
  • replace with coredns for speed and ecosystem
  • almost parallel with container image pull
  • mystery behaviour with not showing as running until late
    • readinessProbe?
    • livenessProbe?
    • postStart exec command?
• tls cert (2m40s)
  • only if the tls certs hasn't been cached

over all, around 10m0s or 12m43s.

Efforts

More caching of images: https://github.com/sharingio/pair/pull/180 Update the init: https://github.com/sharingio/.sharing.io/pull/30

• correct PowerDNS delays