kubespray/roles/network_plugin/canal/templates/canal-config.yaml.j2

# This ConfigMap can be used to configure a self-hosted Canal installation.
# See `canal.yaml` for an example of a Canal deployment which uses
# the config in this ConfigMap.
kind: ConfigMap
apiVersion: v1
metadata:
  name: canal-config
  namespace: kube-system
data:
  # Typha is disabled.
  typha_service_name: "none"

  # The interface used by canal for host <-> host communication.
  # If left blank, then the interface is chosen using the node's
  # default route.
  canal_iface: "{{ canal_iface }}"

  # Whether or not to masquerade traffic to destinations not within
  # the pod network.
  masquerade: "{{ canal_masquerade }}"

  # Configure the MTU to use for workload interfaces and tunnels.
  # By default, MTU is auto-detected, and explicitly setting this field should not be required.
  # You can override auto-detection by providing a non-zero value.
  veth_mtu: "0"

  # The CNI network configuration to install on each node. The special
  # values in this config will be automatically populated.
  cni_network_config: |-
    {
      "name": "k8s-pod-network",
      "cniVersion": "0.3.1",
      "plugins": [
        {
          "type": "calico",
          "log_level": "info",
{% if calico_cni_log_file_path %}
          "log_file_path": "{{ calico_cni_log_file_path }}",
{% endif %}
          "datastore_type": "kubernetes",
          "nodename": "__KUBERNETES_NODE_NAME__",
          "mtu": __CNI_MTU__,
          "ipam": {
              "type": "host-local",
              "subnet": "usePodCidr"
          },
          "policy": {
              "type": "k8s"
          },
          "kubernetes": {
              "kubeconfig": "__KUBECONFIG_FILEPATH__"
          }
        },
        {
          "type": "portmap",
          "snat": true,
          "capabilities": {"portMappings": true}
        },
        {
          "type": "bandwidth",
          "capabilities": {"bandwidth": true}
        }
      ]
    }

  # Flannel network configuration. Mounted into the flannel container.
  net-conf.json: |
    {
      "Network": "{{ kube_pods_subnet }}",
      "Backend": {
        "Type": "vxlan"
      }
    }