KubeADM-AIO: Reinstate Calico CNI

This PS reinstates Calico as the default CNI backend, and deploys from a local manifest. Change-Id: Ic92a40f88b05ccbe0426a207af30608fbadfaf82
2017-05-02 02:14:45 -05:00 · 2017-05-02 02:14:45 -05:00 · d1313cd0a0
commit d1313cd0a0
parent 60d01e54cc
3 changed files with 368 additions and 2 deletions
--- a/tools/kubeadm-aio/assets/opt/cni-manifests/calico.yaml
+++ b/tools/kubeadm-aio/assets/opt/cni-manifests/calico.yaml
@ -0,0 +1,365 @@
+# Calico Version v2.1.4
+# http://docs.projectcalico.org/v2.1/releases#v2.1.4
+# This manifest includes the following component versions:
+#   calico/node:v1.1.3
+#   calico/cni:v1.7.0
+#   calico/kube-policy-controller:v0.5.4
+
+# This ConfigMap is used to configure a self-hosted Calico installation.
+kind: ConfigMap
+apiVersion: v1
+metadata:
+  name: calico-config
+  namespace: kube-system
+data:
+  # The location of your etcd cluster.  This uses the Service clusterIP
+  # defined below.
+  etcd_endpoints: "http://10.96.232.136:6666"
+
+  # Configure the Calico backend to use.
+  calico_backend: "bird"
+
+  # The CNI network configuration to install on each node.
+  cni_network_config: |-
+    {
+        "name": "k8s-pod-network",
+        "type": "calico",
+        "etcd_endpoints": "__ETCD_ENDPOINTS__",
+        "log_level": "info",
+        "ipam": {
+            "type": "calico-ipam"
+        },
+        "policy": {
+            "type": "k8s",
+             "k8s_api_root": "https://__KUBERNETES_SERVICE_HOST__:__KUBERNETES_SERVICE_PORT__",
+             "k8s_auth_token": "__SERVICEACCOUNT_TOKEN__"
+        },
+        "kubernetes": {
+            "kubeconfig": "/etc/cni/net.d/__KUBECONFIG_FILENAME__"
+        }
+    }
+
+---
+
+# This manifest installs the Calico etcd on the kubeadm master.  This uses a DaemonSet
+# to force it to run on the master even when the master isn't schedulable, and uses
+# nodeSelector to ensure it only runs on the master.
+apiVersion: extensions/v1beta1
+kind: DaemonSet
+metadata:
+  name: calico-etcd
+  namespace: kube-system
+  labels:
+    k8s-app: calico-etcd
+spec:
+  template:
+    metadata:
+      labels:
+        k8s-app: calico-etcd
+      annotations:
+        # Mark this pod as a critical add-on; when enabled, the critical add-on scheduler
+        # reserves resources for critical add-on pods so that they can be rescheduled after
+        # a failure.  This annotation works in tandem with the toleration below.
+        scheduler.alpha.kubernetes.io/critical-pod: ''
+    spec:
+      # Only run this pod on the master.
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      # Allow this pod to be rescheduled while the node is in "critical add-ons only" mode.
+      # This, along with the annotation above marks this pod as a critical add-on.
+      - key: CriticalAddonsOnly
+        operator: Exists
+      nodeSelector:
+        node-role.kubernetes.io/master: ""
+      hostNetwork: true
+      containers:
+        - name: calico-etcd
+          image: gcr.io/google_containers/etcd:2.2.1
+          env:
+            - name: CALICO_ETCD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          command: ["/bin/sh","-c"]
+          args: ["/usr/local/bin/etcd --name=calico --data-dir=/var/etcd/calico-data --advertise-client-urls=http://$CALICO_ETCD_IP:6666 --listen-client-urls=http://0.0.0.0:6666 --listen-peer-urls=http://0.0.0.0:6667"]
+          volumeMounts:
+            - name: var-etcd
+              mountPath: /var/etcd
+      volumes:
+        - name: var-etcd
+          hostPath:
+            path: /var/etcd
+
+---
+
+# This manfiest installs the Service which gets traffic to the Calico
+# etcd.
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    k8s-app: calico-etcd
+  name: calico-etcd
+  namespace: kube-system
+spec:
+  # Select the calico-etcd pod running on the master.
+  selector:
+    k8s-app: calico-etcd
+  # This ClusterIP needs to be known in advance, since we cannot rely
+  # on DNS to get access to etcd.
+  clusterIP: 10.96.232.136
+  ports:
+    - port: 6666
+
+---
+
+# This manifest installs the calico/node container, as well
+# as the Calico CNI plugins and network config on
+# each master and worker node in a Kubernetes cluster.
+kind: DaemonSet
+apiVersion: extensions/v1beta1
+metadata:
+  name: calico-node
+  namespace: kube-system
+  labels:
+    k8s-app: calico-node
+spec:
+  selector:
+    matchLabels:
+      k8s-app: calico-node
+  template:
+    metadata:
+      labels:
+        k8s-app: calico-node
+      annotations:
+        # Mark this pod as a critical add-on; when enabled, the critical add-on scheduler
+        # reserves resources for critical add-on pods so that they can be rescheduled after
+        # a failure.  This annotation works in tandem with the toleration below.
+        scheduler.alpha.kubernetes.io/critical-pod: ''
+    spec:
+      hostNetwork: true
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      # Allow this pod to be rescheduled while the node is in "critical add-ons only" mode.
+      # This, along with the annotation above marks this pod as a critical add-on.
+      - key: CriticalAddonsOnly
+        operator: Exists
+      serviceAccountName: calico-cni-plugin
+      containers:
+        # Runs calico/node container on each Kubernetes node.  This
+        # container programs network policy and routes on each
+        # host.
+        - name: calico-node
+          image: quay.io/calico/node:v1.1.3
+          env:
+            # The location of the Calico etcd cluster.
+            - name: ETCD_ENDPOINTS
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: etcd_endpoints
+            # Enable BGP.  Disable to enforce policy only.
+            - name: CALICO_NETWORKING_BACKEND
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: calico_backend
+            # 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"
+            # Configure the IP Pool from which Pod IPs will be chosen.
+            - name: CALICO_IPV4POOL_CIDR
+              value: "192.168.0.0/16"
+            - name: CALICO_IPV4POOL_IPIP
+              value: "always"
+            # Disable IPv6 on Kubernetes.
+            - name: FELIX_IPV6SUPPORT
+              value: "false"
+            # Set Felix logging to "info"
+            - name: FELIX_LOGSEVERITYSCREEN
+              value: "info"
+            # Auto-detect the BGP IP address.
+            - name: IP
+              value: ""
+          securityContext:
+            privileged: true
+          resources:
+            requests:
+              cpu: 250m
+          volumeMounts:
+            - mountPath: /lib/modules
+              name: lib-modules
+              readOnly: true
+            - mountPath: /var/run/calico
+              name: var-run-calico
+              readOnly: false
+        # This container installs the Calico CNI binaries
+        # and CNI network config file on each node.
+        - name: install-cni
+          image: quay.io/calico/cni:v1.7.0
+          command: ["/install-cni.sh"]
+          env:
+            # The location of the Calico etcd cluster.
+            - name: ETCD_ENDPOINTS
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: etcd_endpoints
+            # The CNI network config to install on each node.
+            - name: CNI_NETWORK_CONFIG
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: cni_network_config
+          volumeMounts:
+            - mountPath: /host/opt/cni/bin
+              name: cni-bin-dir
+            - mountPath: /host/etc/cni/net.d
+              name: cni-net-dir
+      volumes:
+        # Used by calico/node.
+        - name: lib-modules
+          hostPath:
+            path: /lib/modules
+        - name: var-run-calico
+          hostPath:
+            path: /var/run/calico
+        # Used to install CNI.
+        - name: cni-bin-dir
+          hostPath:
+            path: /opt/cni/bin
+        - name: cni-net-dir
+          hostPath:
+            path: /etc/cni/net.d
+
+---
+
+# This manifest deploys the Calico policy controller on Kubernetes.
+# See https://github.com/projectcalico/k8s-policy
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: calico-policy-controller
+  namespace: kube-system
+  labels:
+    k8s-app: calico-policy
+spec:
+  # The policy controller can only have a single active instance.
+  replicas: 1
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      name: calico-policy-controller
+      namespace: kube-system
+      labels:
+        k8s-app: calico-policy-controller
+      annotations:
+        # Mark this pod as a critical add-on; when enabled, the critical add-on scheduler
+        # reserves resources for critical add-on pods so that they can be rescheduled after
+        # a failure.  This annotation works in tandem with the toleration below.
+        scheduler.alpha.kubernetes.io/critical-pod: ''
+    spec:
+      # The policy controller must run in the host network namespace so that
+      # it isn't governed by policy that would prevent it from working.
+      hostNetwork: true
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      # Allow this pod to be rescheduled while the node is in "critical add-ons only" mode.
+      # This, along with the annotation above marks this pod as a critical add-on.
+      - key: CriticalAddonsOnly
+        operator: Exists
+      serviceAccountName: calico-policy-controller
+      containers:
+        - name: calico-policy-controller
+          image: quay.io/calico/kube-policy-controller:v0.5.4
+          env:
+            # The location of the Calico etcd cluster.
+            - name: ETCD_ENDPOINTS
+              valueFrom:
+                configMapKeyRef:
+                  name: calico-config
+                  key: etcd_endpoints
+            # The location of the Kubernetes API.  Use the default Kubernetes
+            # service for API access.
+            - name: K8S_API
+              value: "https://kubernetes.default:443"
+            # Since we're running in the host namespace and might not have KubeDNS
+            # access, configure the container's /etc/hosts to resolve
+            # kubernetes.default to the correct service clusterIP.
+            - name: CONFIGURE_ETC_HOSTS
+              value: "true"
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: calico-cni-plugin
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: calico-cni-plugin
+subjects:
+- kind: ServiceAccount
+  name: calico-cni-plugin
+  namespace: kube-system
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: calico-cni-plugin
+  namespace: kube-system
+rules:
+  - apiGroups: [""]
+    resources:
+      - pods
+      - nodes
+    verbs:
+      - get
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: calico-cni-plugin
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: calico-policy-controller
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: calico-policy-controller
+subjects:
+- kind: ServiceAccount
+  name: calico-policy-controller
+  namespace: kube-system
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: calico-policy-controller
+  namespace: kube-system
+rules:
+  - apiGroups:
+    - ""
+    - extensions
+    resources:
+      - pods
+      - namespaces
+      - networkpolicies
+    verbs:
+      - watch
+      - list
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: calico-policy-controller
+  namespace: kube-system
--- a/tools/kubeadm-aio/assets/usr/bin/kubeadm-aio
+++ b/tools/kubeadm-aio/assets/usr/bin/kubeadm-aio
@ -41,8 +41,8 @@ export KUBECONFIG=/root/admin.conf
 echo 'Marking master node as schedulable'
 kubectl taint nodes --all node-role.kubernetes.io/master-

-echo 'Installing Canal CNI'
-kubectl create -f https://raw.githubusercontent.com/projectcalico/canal/master/k8s-install/kubeadm/1.6/canal.yaml
+echo 'Installing Calico CNI'
+kubectl apply -f /opt/cni-manifests/calico.yaml

 echo 'Setting Up Cluser for OpenStack-Helm dev use'
 /usr/bin/openstack-helm-dev-prep
--- a/tools/kubeadm-aio/kubeadm-aio-launcher.sh
+++ b/tools/kubeadm-aio/kubeadm-aio-launcher.sh
@ -28,6 +28,7 @@ sudo rm -rfv \
    /etc/cni/net.d \
    /etc/kubernetes \
    /var/lib/etcd \
+    /var/etcd \
    /var/lib/kubelet/* \
    /run/openvswitch \
    ${HOME}/.kubeadm-aio/admin.conf \