Calico: Delete default BGPPeers and manually add IPV6 BGP Peers

This will show how to remove default BGP Peers and add node specific peers

Prerequisite:  install-calicoctl-in-kubernetes-cluster.html 

1. Disable full node to mesh peering.

cat << EOF | calicoctl create -f -
apiVersion: projectcalico.org/v3
kind: BGPConfiguration
metadata:
   name: default
spec:
   logSeverityScreen: Info
   nodeToNodeMeshEnabled: false
   asNumber: 64512
EOF

2. Add Node specific BGP Peer

• master1 to worker1

cat << EOF | calicoctl create -f -

apiVersion: projectcalico.org/v3
kind: BGPPeer
metadata:
  name: bgppeer-node-worker1
spec:
  peerIP: 2019::101
  node: master1
  asNumber: 64512
EOF

• worker1 to master1

cat << EOF | calicoctl create -f -
apiVersion: projectcalico.org/v3
kind: BGPPeer
metadata:
  name: bgppeer-node-master1
spec:
  peerIP: 2019::100
  node: worker1
  asNumber: 64512
EOF

root@worker1:~# calicoctl node status
Calico process is running.

IPv4 BGP status
+--------------+---------------+-------+----------+-------------+
| PEER ADDRESS |   PEER TYPE   | STATE |  SINCE   |    INFO     |
+--------------+---------------+-------+----------+-------------+
| 172.16.0.6   | node specific | up    | 12:30:30 | Established |
+--------------+---------------+-------+----------+-------------+

IPv6 BGP status
+--------------+---------------+-------+----------+-------------+
| PEER ADDRESS |   PEER TYPE   | STATE |  SINCE   |    INFO     |
+--------------+---------------+-------+----------+-------------+
| 2019::100    | node specific | up    | 12:30:08 | Established |
+--------------+---------------+-------+----------+-------------+

References
https://docs.projectcalico.org/v3.5/usage/configuration/bgp
https://docs.projectcalico.org/v3.5/reference/calicoctl/resources/bgpconfig