Added support for more pod networks and deployed traefik as a daemon set

group_vars/all.example

@@ -1,2 +1,8 @@
-docker_ce_version_to_install: 18.03.1
+docker_ce_version_to_install: 18.03.1
-kube_init_network_interface: enp0s8
+kube_init_network_interface: enp0s8
+
+# Kubernetes pod network. Choices are:
+# flannel
+# weavenet
+# calico
+kube_network: weavenet

roles/initialize-kubernetes/files/install-pod-network.sh

@@ -1,4 +0,0 @@
-#!/bin/bash
-
-kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
-#kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml

roles/initialize-kubernetes/tasks/main.yml

@@ -31,19 +31,14 @@
     line: 'export KUBECONFIG={{ ansible_env.HOME }}/admin.conf'
 
 - name: Copy pod network install script
-  copy:
+  template:
-    src: ../files/install-pod-network.sh
+    src: ../templates/install-pod-network.sh.j2
     dest: "{{ ansible_env.HOME }}/install-pod-network.sh"
 
-- name: Copy networking yaml
-  template:
-    src: ../templates/kube-flannel.yml.j2
-    dest: "{{ ansible_env.HOME }}/kube-flannel.yml"
 
 - name: Install Pod Network
   shell: >
     bash {{ ansible_env.HOME }}/install-pod-network.sh
-    #kubectl apply -f {{ ansible_env.HOME }}/kube-flannel.yml
   environment:
     KUBECONFIG: "{{ ansible_env.HOME }}/admin.conf"
 
@@ -53,8 +48,13 @@
     KUBECONFIG: "{{ ansible_env.HOME }}/admin.conf"
   ignore_errors: true
 
+- name: Copy Traefik yml
+  template:
+    src: ../templates/traefik-ds.yml.j2
+    dest: "{{ ansible_env.HOME }}/traefik-ds.yml"
+
 - name: Install Traefik Ingress Controller
   shell: >
-    kubectl apply -f https://raw.githubusercontent.com/containous/traefik/master/examples/k8s/traefik-deployment.yaml
+    kubectl apply -f {{ ansible_env.HOME }}/traefik-ds.yml
   environment:
     KUBECONFIG: "{{ ansible_env.HOME }}/admin.conf"

roles/initialize-kubernetes/templates/install-pod-network.sh.j2

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+{% if kube_network == "weavenet" %}
+kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
+{% elif kube_network == "flannel" %}
+kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml
+{% elif kube_network == "calico" %}
+kubectl apply -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml
+kubectl apply -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml
+{% endif %}

roles/initialize-kubernetes/templates/kube-flannel.yml.j2

@@ -1,475 +0,0 @@
----
-kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1beta1
-metadata:
-  name: flannel
-rules:
-  - apiGroups:
-      - ""
-    resources:
-      - pods
-    verbs:
-      - get
-  - apiGroups:
-      - ""
-    resources:
-      - nodes
-    verbs:
-      - list
-      - watch
-  - apiGroups:
-      - ""
-    resources:
-      - nodes/status
-    verbs:
-      - patch
----
-kind: ClusterRoleBinding
-apiVersion: rbac.authorization.k8s.io/v1beta1
-metadata:
-  name: flannel
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: flannel
-subjects:
-- kind: ServiceAccount
-  name: flannel
-  namespace: kube-system
----
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: flannel
-  namespace: kube-system
----
-kind: ConfigMap
-apiVersion: v1
-metadata:
-  name: kube-flannel-cfg
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-data:
-  cni-conf.json: |
-    {
-      "name": "cbr0",
-      "plugins": [
-        {
-          "type": "flannel",
-          "delegate": {
-            "hairpinMode": true,
-            "isDefaultGateway": true
-          }
-        },
-        {
-          "type": "portmap",
-          "capabilities": {
-            "portMappings": true
-          }
-        }
-      ]
-    }
-  net-conf.json: |
-    {
-      "Network": "10.244.0.0/16",
-      "Backend": {
-        "Type": "vxlan"
-      }
-    }
----
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: kube-flannel-ds-amd64
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-spec:
-  template:
-    metadata:
-      labels:
-        tier: node
-        app: flannel
-    spec:
-      hostNetwork: true
-      nodeSelector:
-        beta.kubernetes.io/arch: amd64
-      tolerations:
-      - operator: Exists
-        effect: NoSchedule
-      serviceAccountName: flannel
-      initContainers:
-      - name: install-cni
-        image: quay.io/coreos/flannel:v0.10.0-amd64
-        command:
-        - cp
-        args:
-        - -f
-        - /etc/kube-flannel/cni-conf.json
-        - /etc/cni/net.d/10-flannel.conflist
-        volumeMounts:
-        - name: cni
-          mountPath: /etc/cni/net.d
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      containers:
-      - name: kube-flannel
-        image: quay.io/coreos/flannel:v0.10.0-amd64
-        command:
-        - /opt/bin/flanneld
-        args:
-        - --ip-masq
-        - --kube-subnet-mgr
-        - --iface={{ kube_init_network_interface }}
-        resources:
-          requests:
-            cpu: "100m"
-            memory: "50Mi"
-          limits:
-            cpu: "100m"
-            memory: "50Mi"
-        securityContext:
-          privileged: true
-        env:
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
-        volumeMounts:
-        - name: run
-          mountPath: /run
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      volumes:
-        - name: run
-          hostPath:
-            path: /run
-        - name: cni
-          hostPath:
-            path: /etc/cni/net.d
-        - name: flannel-cfg
-          configMap:
-            name: kube-flannel-cfg
----
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: kube-flannel-ds-arm64
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-spec:
-  template:
-    metadata:
-      labels:
-        tier: node
-        app: flannel
-    spec:
-      hostNetwork: true
-      nodeSelector:
-        beta.kubernetes.io/arch: arm64
-      tolerations:
-      - operator: Exists
-        effect: NoSchedule
-      serviceAccountName: flannel
-      initContainers:
-      - name: install-cni
-        image: quay.io/coreos/flannel:v0.10.0-arm64
-        command:
-        - cp
-        args:
-        - -f
-        - /etc/kube-flannel/cni-conf.json
-        - /etc/cni/net.d/10-flannel.conflist
-        volumeMounts:
-        - name: cni
-          mountPath: /etc/cni/net.d
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      containers:
-      - name: kube-flannel
-        image: quay.io/coreos/flannel:v0.10.0-arm64
-        command:
-        - /opt/bin/flanneld
-        args:
-        - --ip-masq
-        - --kube-subnet-mgr
-        - --iface={{ kube_init_network_interface }}
-        resources:
-          requests:
-            cpu: "100m"
-            memory: "50Mi"
-          limits:
-            cpu: "100m"
-            memory: "50Mi"
-        securityContext:
-          privileged: true
-        env:
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
-        volumeMounts:
-        - name: run
-          mountPath: /run
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      volumes:
-        - name: run
-          hostPath:
-            path: /run
-        - name: cni
-          hostPath:
-            path: /etc/cni/net.d
-        - name: flannel-cfg
-          configMap:
-            name: kube-flannel-cfg
----
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: kube-flannel-ds-arm
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-spec:
-  template:
-    metadata:
-      labels:
-        tier: node
-        app: flannel
-    spec:
-      hostNetwork: true
-      nodeSelector:
-        beta.kubernetes.io/arch: arm
-      tolerations:
-      - operator: Exists
-        effect: NoSchedule
-      serviceAccountName: flannel
-      initContainers:
-      - name: install-cni
-        image: quay.io/coreos/flannel:v0.10.0-arm
-        command:
-        - cp
-        args:
-        - -f
-        - /etc/kube-flannel/cni-conf.json
-        - /etc/cni/net.d/10-flannel.conflist
-        volumeMounts:
-        - name: cni
-          mountPath: /etc/cni/net.d
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      containers:
-      - name: kube-flannel
-        image: quay.io/coreos/flannel:v0.10.0-arm
-        command:
-        - /opt/bin/flanneld
-        args:
-        - --ip-masq
-        - --kube-subnet-mgr
-        - --iface={{ kube_init_network_interface }}
-        resources:
-          requests:
-            cpu: "100m"
-            memory: "50Mi"
-          limits:
-            cpu: "100m"
-            memory: "50Mi"
-        securityContext:
-          privileged: true
-        env:
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
-        volumeMounts:
-        - name: run
-          mountPath: /run
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      volumes:
-        - name: run
-          hostPath:
-            path: /run
-        - name: cni
-          hostPath:
-            path: /etc/cni/net.d
-        - name: flannel-cfg
-          configMap:
-            name: kube-flannel-cfg
----
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: kube-flannel-ds-ppc64le
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-spec:
-  template:
-    metadata:
-      labels:
-        tier: node
-        app: flannel
-    spec:
-      hostNetwork: true
-      nodeSelector:
-        beta.kubernetes.io/arch: ppc64le
-      tolerations:
-      - operator: Exists
-        effect: NoSchedule
-      serviceAccountName: flannel
-      initContainers:
-      - name: install-cni
-        image: quay.io/coreos/flannel:v0.10.0-ppc64le
-        command:
-        - cp
-        args:
-        - -f
-        - /etc/kube-flannel/cni-conf.json
-        - /etc/cni/net.d/10-flannel.conflist
-        volumeMounts:
-        - name: cni
-          mountPath: /etc/cni/net.d
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      containers:
-      - name: kube-flannel
-        image: quay.io/coreos/flannel:v0.10.0-ppc64le
-        command:
-        - /opt/bin/flanneld
-        args:
-        - --ip-masq
-        - --kube-subnet-mgr
-        - --iface={{ kube_init_network_interface }}
-        resources:
-          requests:
-            cpu: "100m"
-            memory: "50Mi"
-          limits:
-            cpu: "100m"
-            memory: "50Mi"
-        securityContext:
-          privileged: true
-        env:
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
-        volumeMounts:
-        - name: run
-          mountPath: /run
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      volumes:
-        - name: run
-          hostPath:
-            path: /run
-        - name: cni
-          hostPath:
-            path: /etc/cni/net.d
-        - name: flannel-cfg
-          configMap:
-            name: kube-flannel-cfg
----
-apiVersion: extensions/v1beta1
-kind: DaemonSet
-metadata:
-  name: kube-flannel-ds-s390x
-  namespace: kube-system
-  labels:
-    tier: node
-    app: flannel
-spec:
-  template:
-    metadata:
-      labels:
-        tier: node
-        app: flannel
-    spec:
-      hostNetwork: true
-      nodeSelector:
-        beta.kubernetes.io/arch: s390x
-      tolerations:
-      - operator: Exists
-        effect: NoSchedule
-      serviceAccountName: flannel
-      initContainers:
-      - name: install-cni
-        image: quay.io/coreos/flannel:v0.10.0-s390x
-        command:
-        - cp
-        args:
-        - -f
-        - /etc/kube-flannel/cni-conf.json
-        - /etc/cni/net.d/10-flannel.conflist
-        volumeMounts:
-        - name: cni
-          mountPath: /etc/cni/net.d
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      containers:
-      - name: kube-flannel
-        image: quay.io/coreos/flannel:v0.10.0-s390x
-        command:
-        - /opt/bin/flanneld
-        args:
-        - --ip-masq
-        - --kube-subnet-mgr
-        - --iface={{ kube_init_network_interface }}
-        resources:
-          requests:
-            cpu: "100m"
-            memory: "50Mi"
-          limits:
-            cpu: "100m"
-            memory: "50Mi"
-        securityContext:
-          privileged: true
-        env:
-        - name: POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
-        - name: POD_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
-        volumeMounts:
-        - name: run
-          mountPath: /run
-        - name: flannel-cfg
-          mountPath: /etc/kube-flannel/
-      volumes:
-        - name: run
-          hostPath:
-            path: /run
-        - name: cni
-          hostPath:
-            path: /etc/cni/net.d
-        - name: flannel-cfg
-          configMap:
-            name: kube-flannel-cfg

roles/initialize-kubernetes/templates/traefik-ds.yml.j2

@@ -0,0 +1,61 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: traefik-ingress-controller
+  namespace: kube-system
+---
+kind: DaemonSet
+apiVersion: extensions/v1beta1
+metadata:
+  name: traefik-ingress-controller
+  namespace: kube-system
+  labels:
+    k8s-app: traefik-ingress-lb
+spec:
+  template:
+    metadata:
+      labels:
+        k8s-app: traefik-ingress-lb
+        name: traefik-ingress-lb
+    spec:
+      serviceAccountName: traefik-ingress-controller
+      terminationGracePeriodSeconds: 60
+      containers:
+      - image: traefik
+        name: traefik-ingress-lb
+        ports:
+        - name: http
+          containerPort: 80
+          hostPort: 80
+        - name: admin
+          containerPort: 8080
+          hostPort: 8080
+        securityContext:
+          capabilities:
+            drop:
+            - ALL
+            add:
+            - NET_BIND_SERVICE
+        args:
+        - --api
+        - --kubernetes
+        - --logLevel=INFO
+        - --ping
+        - --insecureskipverify
+---
+kind: Service
+apiVersion: v1
+metadata:
+  name: traefik-ingress-service
+  namespace: kube-system
+spec:
+  selector:
+    k8s-app: traefik-ingress-lb
+  ports:
+    - protocol: TCP
+      port: 80
+      name: web
+    - protocol: TCP
+      port: 8080
+      name: admin

roles/install-kubernetes/tasks/main.yml

@@ -66,4 +66,5 @@
     state: present
     sysctl_set: yes
     reload: yes
-  become: true
+  become: true
+  when: kube_network == "flannel" or kube_network == "weavenet"

tests/files/group_vars_all

@@ -1,2 +1,3 @@
 docker_ce_version_to_install: 18.03.1
-kube_init_network_interface: enp0s8
+kube_init_network_interface: enp0s8
+kube_network: weavenet