I was trying to bring up k8s using kubeadm to use a non-default route interface

kubeadm-non-default-route.md

apiVersion: kubeadm.k8s.io/v1beta1
kind: InitConfiguration
nodeRegistration:
  criSocket: /var/run/crio/crio.sock
  taints: []
  name: k8s-clr-01
  kubeletExtraArgs:
    node-ip: "192.52.100.11"
localAPIEndpoint:
  advertiseAddress: "192.52.100.11"
  bindPort: 6443
---
apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
networking:
  dnsDomain: cluster.local
  podSubnet: 10.244.0.0/16
  serviceSubnet: 10.96.0.0/12
controlPlaneEndpoint: "192.52.100.11:6443"

$ cat /etc/hosts
127.0.0.1 localhost clr-01
192.52.100.11 k8s-clr-01

$ hostname -f
localhost

$ ip route
default via 192.168.121.1 dev enp0s8 proto dhcp src 192.168.121.167 metric 1024
192.52.100.0/24 dev enp0s9 proto kernel scope link src 192.52.100.11
192.168.121.0/24 dev enp0s8 proto kernel scope link src 192.168.121.167
192.168.121.1 dev enp0s8 proto dhcp scope link src 192.168.121.167 metric 1024