1. export POD_SUBNET=100.64.0.0/10
    2. rm -f calico-3.9.2.yaml
    3. wget https://kuboard.cn/install-script/calico/calico-3.9.2.yaml
    4. sed -i "s#192\.168\.0\.0/16#${POD_SUBNET}#" calico-3.9.2.yaml
    5. kubectl apply -f calico-3.9.2.yaml

    calico的网段和主机的网段不能一样