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Validate Cilium as Calico replacement for GKE

There has been multiple issues related to the usage of Calico:

Following discussion in scalability#1985 (comment 1176276704), we want to validate if Cilium could address these problems.

Mainly we are looking at:

  • Reducing network processing overhead
  • Remove calico pod rotation due to vertical auto-scaling events (which causes small drop of traffic)
  • Improve node startup/shutdown connectivity (e.g. Consul)

Steps

Edited by Filipe Santos