kubernetes: add network-plugin kube-router

5 files changed, 258 insertions, 0 deletions

diff --git a/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml
new file mode 100644
index 00000000..246b20bc
--- /dev/null
+++ b/roles/kubernetes/kubeadm/base/tasks/net_kube-router.yml
@@ -0,0 +1,8 @@
+---
+- name: install packages needed for debugging kube-router
+  apt:
+    name:
+    - iptables
+    - ipvsadm
+    - ipset
+    state: present
diff --git a/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml
new file mode 100644
index 00000000..5368b6f5
--- /dev/null
+++ b/roles/kubernetes/kubeadm/master/tasks/net_kube-router.yml
@@ -0,0 +1,10 @@
+---
+- name: generate kube-router configuration
+  template:
+    src: "net_kube-router/config.{{ kubernetes_network_plugin_version }}.yml.j2"
+    dest: /etc/kubernetes/network-plugin.yml
+
+- name: install kube-router on to the cluster
+  command: kubectl --kubeconfig /etc/kubernetes/admin.conf apply -f /etc/kubernetes/network-plugin.yml
+  register: kube_router_apply_result
+  changed_when: (kube_router_apply_result.stdout_lines | reject("regex", " unchanged$") | list | length) > 0
diff --git a/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2 b/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2
new file mode 100644
index 00000000..b06687d5
--- /dev/null
+++ b/roles/kubernetes/kubeadm/master/templates/net_kube-router/config.0.4.0.yml.j2
@@ -0,0 +1,237 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: kube-router-kubeconfig
+  namespace: kube-system
+  labels:
+    tier: node
+    k8s-app: kube-router
+data:
+  kubeconfig.conf: |
+    apiVersion: v1
+    kind: Config
+    clusters:
+    - cluster:
+        certificate-authority: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+        server: https://127.0.0.1:{{ kubernetes_api_lb_port | default('6443') }}
+      name: default
+    contexts:
+    - context:
+        cluster: default
+        namespace: default
+        user: default
+      name: default
+    current-context: default
+    users:
+    - name: default
+      user:
+        tokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: kube-router-cfg
+  namespace: kube-system
+  labels:
+    tier: node
+    k8s-app: kube-router
+data:
+  cni-conf.json: |
+    {
+       "cniVersion":"0.3.0",
+       "name":"mynet",
+       "plugins":[
+          {
+             "name":"kubernetes",
+             "type":"bridge",
+             "bridge":"kube-bridge",
+             "isDefaultGateway":true,
+             "hairpinMode": true,
+             "ipam":{
+                "type":"host-local"
+             }
+          },
+          {
+             "type":"portmap",
+             "capabilities":{
+                "snat":true,
+                "portMappings":true
+             }
+          }
+       ]
+    }
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  labels:
+    k8s-app: kube-router
+    tier: node
+  name: kube-router
+  namespace: kube-system
+spec:
+  selector:
+    matchLabels:
+      k8s-app: kube-router
+      tier: node
+  template:
+    metadata:
+      labels:
+        k8s-app: kube-router
+        tier: node
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "8080"
+    spec:
+      priorityClassName: system-node-critical
+      serviceAccountName: kube-router
+      serviceAccount: kube-router
+      containers:
+      - name: kube-router
+        image: docker.io/cloudnativelabs/kube-router:v{{ kubernetes_network_plugin_version }}
+        imagePullPolicy: Always
+        args:
+        - --run-router=true
+        - --run-firewall=true
+        - --run-service-proxy={{ kubernetes_network_plugin_replaces_kube_proxy | string | lower }}
+        - --kubeconfig=/var/lib/kube-router/kubeconfig
+        - --hairpin-mode
+        - --iptables-sync-period=10s
+        - --ipvs-sync-period=10s
+        - --routes-sync-period=10s
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
+        - name: KUBE_ROUTER_CNI_CONF_FILE
+          value: /etc/cni/net.d/10-kuberouter.conflist
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 20244
+          initialDelaySeconds: 10
+          periodSeconds: 3
+        resources:
+          requests:
+            cpu: 250m
+            memory: 250Mi
+        securityContext:
+          privileged: true
+        volumeMounts:
+        - name: lib-modules
+          mountPath: /lib/modules
+          readOnly: true
+        - name: cni-conf-dir
+          mountPath: /etc/cni/net.d
+        - name: kubeconfig
+          mountPath: /var/lib/kube-router
+          readOnly: true
+        - name: xtables-lock
+          mountPath: /run/xtables.lock
+          readOnly: false
+      initContainers:
+      - name: install-cni
+        image: busybox
+        imagePullPolicy: Always
+        command:
+        - /bin/sh
+        - -c
+        - set -e -x;
+          if [ ! -f /etc/cni/net.d/10-kuberouter.conflist ]; then
+            if [ -f /etc/cni/net.d/*.conf ]; then
+              rm -f /etc/cni/net.d/*.conf;
+            fi;
+            TMP=/etc/cni/net.d/.tmp-kuberouter-cfg;
+            cp /etc/kube-router/cni-conf.json ${TMP};
+            mv ${TMP} /etc/cni/net.d/10-kuberouter.conflist;
+          fi
+        volumeMounts:
+        - name: cni-conf-dir
+          mountPath: /etc/cni/net.d
+        - name: kube-router-cfg
+          mountPath: /etc/kube-router
+      hostNetwork: true
+      tolerations:
+      - key: CriticalAddonsOnly
+        operator: Exists
+      - effect: NoSchedule
+        key: node-role.kubernetes.io/master
+        operator: Exists
+      - effect: NoSchedule
+        key: node.kubernetes.io/not-ready
+        operator: Exists
+      volumes:
+      - name: lib-modules
+        hostPath:
+          path: /lib/modules
+      - name: cni-conf-dir
+        hostPath:
+          path: /etc/cni/net.d
+      - name: kube-router-cfg
+        configMap:
+          name: kube-router-cfg
+      - name: kubeconfig
+        configMap:
+          name: kube-router-kubeconfig
+          items:
+          - key: kubeconfig.conf
+            path: kubeconfig
+      - name: xtables-lock
+        hostPath:
+          path: /run/xtables.lock
+          type: FileOrCreate
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: kube-router
+  namespace: kube-system
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: kube-router
+  namespace: kube-system
+rules:
+  - apiGroups:
+    - ""
+    resources:
+      - namespaces
+      - pods
+      - services
+      - nodes
+      - endpoints
+    verbs:
+      - list
+      - get
+      - watch
+  - apiGroups:
+    - "networking.k8s.io"
+    resources:
+      - networkpolicies
+    verbs:
+      - list
+      - get
+      - watch
+  - apiGroups:
+    - extensions
+    resources:
+      - networkpolicies
+    verbs:
+      - get
+      - list
+      - watch
+---
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: kube-router
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kube-router
+subjects:
+- kind: ServiceAccount
+  name: kube-router
+  namespace: kube-system
diff --git a/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml b/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml
new file mode 100644
index 00000000..94832c38
--- /dev/null
+++ b/roles/kubernetes/kubeadm/prune/tasks/net_kube-router.yml
@@ -0,0 +1,2 @@
+---
+## nothing to do here
diff --git a/roles/kubernetes/kubeadm/reset/tasks/main.yml b/roles/kubernetes/kubeadm/reset/tasks/main.yml
index cf9c125d..8a21fbd5 100644
--- a/roles/kubernetes/kubeadm/reset/tasks/main.yml
+++ b/roles/kubernetes/kubeadm/reset/tasks/main.yml
@@ -14,6 +14,7 @@
     - /etc/kubernetes/network-plugin.yml
     - /etc/kubernetes/node-local-dns.yml
     - /etc/kubernetes/addons
+    - /etc/default/kubelet
   file:
     path: "{{ item }}"
     state: absent