typhoon/bare-metal/container-linux
Dalton Hubble e9c8520359 Add experimental Cilium CNI provider
* Accept experimental CNI `networking` mode "cilium"
* Run Cilium v1.8.0-rc4 with overlay vxlan tunnels and a
minimal set of features. We're interested in:
  * IPAM: Divide pod_cidr into /24 subnets per node
  * CNI networking pod-to-pod, pod-to-external
  * BPF masquerade
  * NetworkPolicy as defined by Kubernetes (no L7 Policy)
* Continue using kube-proxy with Cilium probe mode
* Firewall changes:
  * Require UDP 8472 for vxlan (Linux kernel default) between nodes
  * Optional ICMP echo(8) between nodes for host reachability
    (health)
  * Optional TCP 4240 between nodes for endpoint reachability (health)

Known Issues:

* Containers with `hostPort` don't listen on all host addresses,
these workloads must use `hostNetwork` for now
https://github.com/cilium/cilium/issues/12116
* Erroneous warning on Fedora CoreOS
https://github.com/cilium/cilium/issues/10256

Note: This is experimental. It is not listed in docs and may be
changed or removed without a deprecation notice

Related:

* https://github.com/poseidon/terraform-render-bootstrap/pull/192
* https://github.com/cilium/cilium/issues/12217
2020-06-21 20:41:53 -07:00
..
kubernetes Add experimental Cilium CNI provider 2020-06-21 20:41:53 -07:00