diff --git a/group_vars/all.yml b/group_vars/all.yml index 82be3e1..0966878 100644 --- a/group_vars/all.yml +++ b/group_vars/all.yml @@ -18,7 +18,7 @@ pod_network_cidr: "10.244.0.0/16" calico_etcd_service: "10.96.232.136" -# Network implementation('flannel', 'calico') +# Network implementation('flannel', 'calico', 'canal') network: calico # Change this to an appropriate interface, preferably a private network. diff --git a/reset-site.yaml b/reset-site.yaml index dd57ed7..cc34f5a 100644 --- a/reset-site.yaml +++ b/reset-site.yaml @@ -10,7 +10,7 @@ - name: Delete flannel.1 interface command: ip link delete flannel.1 - when: network == "flannel" + when: network == "flannel" or network == "canal" ignore_errors: True - name: Delete cni0 interface diff --git a/roles/cni/templates/canal.yml.j2 b/roles/cni/templates/canal.yml.j2 new file mode 100644 index 0000000..97007a0 --- /dev/null +++ b/roles/cni/templates/canal.yml.j2 @@ -0,0 +1,608 @@ +--- +# Source: calico/templates/calico-config.yaml +# This ConfigMap is used to configure a self-hosted Canal installation. +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: "" + + # Whether or not to masquerade traffic to destinations not within + # the pod network. + masquerade: "true" + + # 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", + "datastore_type": "kubernetes", + "nodename": "__KUBERNETES_NODE_NAME__", + "ipam": { + "type": "host-local", + "subnet": "usePodCidr" + }, + "policy": { + "type": "k8s" + }, + "kubernetes": { + "kubeconfig": "__KUBECONFIG_FILEPATH__" + } + }, + { + "type": "portmap", + "snat": true, + "capabilities": {"portMappings": true} + } + ] + } + + # Flannel network configuration. Mounted into the flannel container. + net-conf.json: | + { + "Network": "{{ pod_network_cidr }}", + "Backend": { + "Type": "vxlan" + } + } + +--- +# Source: calico/templates/kdd-crds.yaml +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: felixconfigurations.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: FelixConfiguration + plural: felixconfigurations + singular: felixconfiguration +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: bgpconfigurations.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: BGPConfiguration + plural: bgpconfigurations + singular: bgpconfiguration + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: ippools.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: IPPool + plural: ippools + singular: ippool + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: hostendpoints.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: HostEndpoint + plural: hostendpoints + singular: hostendpoint + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: clusterinformations.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: ClusterInformation + plural: clusterinformations + singular: clusterinformation + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: globalnetworkpolicies.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: GlobalNetworkPolicy + plural: globalnetworkpolicies + singular: globalnetworkpolicy + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: globalnetworksets.crd.projectcalico.org +spec: + scope: Cluster + group: crd.projectcalico.org + version: v1 + names: + kind: GlobalNetworkSet + plural: globalnetworksets + singular: globalnetworkset + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: networkpolicies.crd.projectcalico.org +spec: + scope: Namespaced + group: crd.projectcalico.org + version: v1 + names: + kind: NetworkPolicy + plural: networkpolicies + singular: networkpolicy + +--- + +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: networksets.crd.projectcalico.org +spec: + scope: Namespaced + group: crd.projectcalico.org + version: v1 + names: + kind: NetworkSet + plural: networksets + singular: networkset +--- +# Source: calico/templates/rbac.yaml + +# Include a clusterrole for the calico-node DaemonSet, +# and bind it to the calico-node serviceaccount. +kind: ClusterRole +apiVersion: rbac.authorization.k8s.io/v1 +metadata: + name: calico-node +rules: + # The CNI plugin needs to get pods, nodes, and namespaces. + - apiGroups: [""] + resources: + - pods + - nodes + - namespaces + verbs: + - get + - apiGroups: [""] + resources: + - endpoints + - services + verbs: + # Used to discover service IPs for advertisement. + - watch + - list + # Used to discover Typhas. + - get + - apiGroups: [""] + resources: + - nodes/status + verbs: + # Needed for clearing NodeNetworkUnavailable flag. + - patch + # Calico stores some configuration information in node annotations. + - update + # Watch for changes to Kubernetes NetworkPolicies. + - apiGroups: ["networking.k8s.io"] + resources: + - networkpolicies + verbs: + - watch + - list + # Used by Calico for policy information. + - apiGroups: [""] + resources: + - pods + - namespaces + - serviceaccounts + verbs: + - list + - watch + # The CNI plugin patches pods/status. + - apiGroups: [""] + resources: + - pods/status + verbs: + - patch + # Calico monitors various CRDs for config. + - apiGroups: ["crd.projectcalico.org"] + resources: + - globalfelixconfigs + - felixconfigurations + - bgppeers + - globalbgpconfigs + - bgpconfigurations + - ippools + - ipamblocks + - globalnetworkpolicies + - globalnetworksets + - networkpolicies + - networksets + - clusterinformations + - hostendpoints + verbs: + - get + - list + - watch + # Calico must create and update some CRDs on startup. + - apiGroups: ["crd.projectcalico.org"] + resources: + - ippools + - felixconfigurations + - clusterinformations + verbs: + - create + - update + # Calico stores some configuration information on the node. + - apiGroups: [""] + resources: + - nodes + verbs: + - get + - list + - watch + # These permissions are only requried for upgrade from v2.6, and can + # be removed after upgrade or on fresh installations. + - apiGroups: ["crd.projectcalico.org"] + resources: + - bgpconfigurations + - bgppeers + verbs: + - create + - update +--- +# Flannel ClusterRole +# Pulled from https://github.com/coreos/flannel/blob/master/Documentation/kube-flannel-rbac.yml +kind: ClusterRole +apiVersion: rbac.authorization.k8s.io/v1 +metadata: + name: flannel +rules: + - apiGroups: [""] + resources: + - pods + verbs: + - get + - apiGroups: [""] + resources: + - nodes + verbs: + - list + - watch + - apiGroups: [""] + resources: + - nodes/status + verbs: + - patch +--- +# Bind the flannel ClusterRole to the canal ServiceAccount. +kind: ClusterRoleBinding +apiVersion: rbac.authorization.k8s.io/v1 +metadata: + name: canal-flannel +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: flannel +subjects: +- kind: ServiceAccount + name: canal + namespace: kube-system +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + name: canal-calico +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: calico-node +subjects: +- kind: ServiceAccount + name: canal + namespace: kube-system + +--- +# Source: calico/templates/calico-node.yaml +# This manifest installs the canal container, as well +# as the CNI plugins and network config on +# each master and worker node in a Kubernetes cluster. +kind: DaemonSet +apiVersion: apps/v1 +metadata: + name: canal + namespace: kube-system + labels: + k8s-app: canal +spec: + selector: + matchLabels: + k8s-app: canal + updateStrategy: + type: RollingUpdate + rollingUpdate: + maxUnavailable: 1 + template: + metadata: + labels: + k8s-app: canal + annotations: + # This, along with the CriticalAddonsOnly toleration below, + # marks the pod as a critical add-on, ensuring it gets + # priority scheduling and that its resources are reserved + # if it ever gets evicted. + scheduler.alpha.kubernetes.io/critical-pod: '' + spec: + nodeSelector: + beta.kubernetes.io/os: linux + hostNetwork: true + tolerations: + # Make sure canal gets scheduled on all nodes. + - effect: NoSchedule + operator: Exists + # Mark the pod as a critical add-on for rescheduling. + - key: CriticalAddonsOnly + operator: Exists + - effect: NoExecute + operator: Exists + serviceAccountName: canal + # Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force + # deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods. + terminationGracePeriodSeconds: 0 + priorityClassName: system-node-critical + initContainers: + # This container installs the CNI binaries + # and CNI network config file on each node. + - name: install-cni + image: calico/cni:v3.8.2 + command: ["/install-cni.sh"] + env: + # Name of the CNI config file to create. + - name: CNI_CONF_NAME + value: "10-canal.conflist" + # The CNI network config to install on each node. + - name: CNI_NETWORK_CONFIG + valueFrom: + configMapKeyRef: + name: canal-config + key: cni_network_config + # Set the hostname based on the k8s node name. + - name: KUBERNETES_NODE_NAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + # Prevents the container from sleeping forever. + - name: SLEEP + value: "false" + volumeMounts: + - mountPath: /host/opt/cni/bin + name: cni-bin-dir + - mountPath: /host/etc/cni/net.d + name: cni-net-dir + # Adds a Flex Volume Driver that creates a per-pod Unix Domain Socket to allow Dikastes + # to communicate with Felix over the Policy Sync API. + - name: flexvol-driver + image: calico/pod2daemon-flexvol:v3.8.2 + volumeMounts: + - name: flexvol-driver-host + mountPath: /host/driver + containers: + # Runs canal container on each Kubernetes node. This + # container programs network policy and routes on each + # host. + - name: calico-node + image: calico/node:v3.8.2 + env: + # Use Kubernetes API as the backing datastore. + - name: DATASTORE_TYPE + value: "kubernetes" + # Configure route aggregation based on pod CIDR. + - name: USE_POD_CIDR + value: "true" + # Wait for the datastore. + - name: WAIT_FOR_DATASTORE + value: "true" + # Set based on the k8s node name. + - name: NODENAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + # Don't enable BGP. + - name: CALICO_NETWORKING_BACKEND + value: "none" + # Cluster type to identify the deployment type + - name: CLUSTER_TYPE + value: "k8s,canal" + # Period, in seconds, at which felix re-applies all iptables state + - name: FELIX_IPTABLESREFRESHINTERVAL + value: "60" + # No IP address needed. + - name: IP + value: "" + # The default IPv4 pool to create on startup if none exists. Pod IPs will be + # chosen from this range. Changing this value after installation will have + # no effect. This should fall within `--cluster-cidr`. + - name: CALICO_IPV4POOL_CIDR + value: "192.168.0.0/16" + # Disable file logging so `kubectl logs` works. + - name: CALICO_DISABLE_FILE_LOGGING + value: "true" + # Set Felix endpoint to host default action to ACCEPT. + - name: FELIX_DEFAULTENDPOINTTOHOSTACTION + value: "ACCEPT" + # Disable IPv6 on Kubernetes. + - name: FELIX_IPV6SUPPORT + value: "false" + # Set Felix logging to "info" + - name: FELIX_LOGSEVERITYSCREEN + value: "info" + - name: FELIX_HEALTHENABLED + value: "true" + securityContext: + privileged: true + resources: + requests: + cpu: 250m + livenessProbe: + httpGet: + path: /liveness + port: 9099 + host: localhost + periodSeconds: 10 + initialDelaySeconds: 10 + failureThreshold: 6 + readinessProbe: + httpGet: + path: /readiness + port: 9099 + host: localhost + periodSeconds: 10 + volumeMounts: + - mountPath: /lib/modules + name: lib-modules + readOnly: true + - mountPath: /run/xtables.lock + name: xtables-lock + readOnly: false + - mountPath: /var/run/calico + name: var-run-calico + readOnly: false + - mountPath: /var/lib/calico + name: var-lib-calico + readOnly: false + - name: policysync + mountPath: /var/run/nodeagent + # This container runs flannel using the kube-subnet-mgr backend + # for allocating subnets. + - name: kube-flannel + image: quay.io/coreos/flannel:v0.11.0 + command: [ "/opt/bin/flanneld", "--ip-masq", "--kube-subnet-mgr" ] + securityContext: + privileged: true + env: + - name: POD_NAME + valueFrom: + fieldRef: + fieldPath: metadata.name + - name: POD_NAMESPACE + valueFrom: + fieldRef: + fieldPath: metadata.namespace + - name: FLANNELD_IFACE + valueFrom: + configMapKeyRef: + name: canal-config + key: canal_iface + - name: FLANNELD_IP_MASQ + valueFrom: + configMapKeyRef: + name: canal-config + key: masquerade + volumeMounts: + - mountPath: /run/xtables.lock + name: xtables-lock + readOnly: false + - name: flannel-cfg + mountPath: /etc/kube-flannel/ + volumes: + # Used by canal. + - name: lib-modules + hostPath: + path: /lib/modules + - name: var-run-calico + hostPath: + path: /var/run/calico + - name: var-lib-calico + hostPath: + path: /var/lib/calico + - name: xtables-lock + hostPath: + path: /run/xtables.lock + type: FileOrCreate + # Used by flannel. + - name: flannel-cfg + configMap: + name: canal-config + # Used to install CNI. + - name: cni-bin-dir + hostPath: + path: /opt/cni/bin + - name: cni-net-dir + hostPath: + path: /etc/cni/net.d + # Used to create per-pod Unix Domain Sockets + - name: policysync + hostPath: + type: DirectoryOrCreate + path: /var/run/nodeagent + # Used to install Flex Volume Driver + - name: flexvol-driver-host + hostPath: + type: DirectoryOrCreate + path: /usr/libexec/kubernetes/kubelet-plugins/volume/exec/nodeagent~uds +--- + +apiVersion: v1 +kind: ServiceAccount +metadata: + name: canal + namespace: kube-system + +--- +# Source: calico/templates/calico-etcd-secrets.yaml + +--- +# Source: calico/templates/calico-kube-controllers.yaml + +--- +# Source: calico/templates/calico-typha.yaml + +--- +# Source: calico/templates/configure-canal.yaml + +