Support autodetection interface methods in windows

[manuelbuil]

Signed-off-by: Manuel Buil mbuil@suse.com

Proposed Changes

Calico-windows only supported the default interface autodetection method ("first-found"). This PR provides support of the additional methods:

• cidrs
• canReach
• interface

These methods provide the interface that Calico should use to create the vxlanoverlay. I added a new string in the Calicoconfig (Interface) to save that value. When creating the vxlan network, it is used.

Apart from that:

• a new file (utils.go) is created and all non-related to Calico functions are migrated there
• deleteAllNetworksOnNodeRestart() changed name to deleteAllNetworks()

Types of Changes

New feature

Verification

Deploy rke2 with a HelmChartConfig which configures nodeAddressAutodetectionV4:

apiVersion: helm.cattle.io/v1
kind: HelmChartConfig
metadata:
  name: rke2-calico
  namespace: kube-system
spec:
  valuesContent: |-
    installation:
      calicoNetwork:
        nodeAddressAutodetectionV4:
          <INSERT-METHOD>

can be:

interface: foo

where foo is a regexp expression (e.g. "eth.?") or directly the interface (e.g. eth1)

canReach: foo

where foo is an IP or a hostname (e.g. github.com)

cidrs:
  - foo

where foo is a cidr (e.g. 10.10.10.0/24). It can define more items

Linked Issues

#3614

Further Comments

[dereknola]

How does this change things compared to #3375? I had already added support for those options in windows. Is this a refactor?

[dereknola]

Talking to manuel, more context is:
PR #3375, did not fully implement the calico feature. While that PR made kubectl report the correct calico node-ip and annotation, it did not actually change the Vxlan ManagmentIP that calico used. This PR fixes that, and does change the vxlan interface https://github.com/rancher/rke2/blob/master/pkg/windows/calico.go#L288-L293

[manuelbuil]

How does this change things compared to #3375? I had already added support for those options in windows. Is this a refactor?

We are currently not using all Calico scripts to deploy the whole Calico on Windows. We are creating the vxlan overlay ourselves and after that deploy calico and felix agents using upstream scripts. The code is currently configuring things correctly for calico and felix agents but the creation of the vxlan overlay is not taking into account what is configured as autodetection method in the chart. This PR fixes that and applies the same config for the vxlan overlay and the calico&felix agents