natesales / pathvector-plugin-calico

Calico BGP support for Pathvector

Pathvector Calico Plugin

The calico plugin adds support for Calico BGP autoconfiguration to Pathvector version 6.

Quickstart

For this example, we'll use a single node k3s cluster with Pathvector running on the host itself. In a real network, your cluster would have more than one node and Pathvector would run on the network device (ToR switch, core router, etc).

Install Calico on k3s

Follow the Calico k3s quickstart to spin up a single node development cluster:

# Install k3s with default Flannel CNI disabled
curl -sfL https://get.k3s.io | K3S_KUBECONFIG_MODE="644" INSTALL_K3S_EXEC="--flannel-backend=none --cluster-cidr=192.168.0.0/16 --disable-network-policy --disable=traefik" sh -

# Install the Calico operator and custom resource definitions
kubectl create -f https://docs.projectcalico.org/manifests/tigera-operator.yaml
kubectl create -f https://docs.projectcalico.org/manifests/custom-resources.yaml

# Deploy the calicoctl container to connect to the Kubernetes API datastore
kubectl apply -f https://docs.projectcalico.org/manifests/calicoctl.yaml

# Alias calicoctl to the calicoctl container
alias calicoctl='kubectl exec -i -n kube-system calicoctl -- /calicoctl'

Run watch kubectl get pods --all-namespaces and wait for everything to start up.

NAMESPACE          NAME                                       READY   STATUS    RESTARTS   AGE
tigera-operator    tigera-operator-59f4845b57-pwbd4           1/1     Running   0          9m58s
kube-system        calicoctl                                  1/1     Running   0          9m28s
calico-system      calico-typha-6d447889d5-5mj85              1/1     Running   0          9m35s
calico-system      calico-node-zhrw9                          1/1     Running   0          9m35s
kube-system        local-path-provisioner-5ff76fc89d-gq6x2    1/1     Running   0          9m58s
kube-system        metrics-server-86cbb8457f-fs4d2            1/1     Running   0          9m58s
calico-system      calico-kube-controllers-5f6b4b77d6-cgjq7   1/1     Running   0          9m35s
kube-system        coredns-7448499f4d-9swgm                   1/1     Running   0          9m58s
calico-apiserver   calico-apiserver-6d9f46878b-x8qjv          1/1     Running   0          7m58s

Add a global BGP peer

cat <<EOT >> calico-bgp.yaml
apiVersion: projectcalico.org/v3
kind: BGPPeer
metadata:
  name: pathvector-upstream
spec:
  peerIP: 127.0.0.2
  asNumber: 65530
EOT
kubectl apply -f calico-bgp.yaml