diff options
Diffstat (limited to 'roles')
3 files changed, 195 insertions, 3 deletions
diff --git a/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml index 37b5030d..2d706a03 100644 --- a/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml +++ b/roles/kubernetes/kubeadm/base/tasks/net_kubeguard.yml @@ -1,8 +1,10 @@ --- - name: make sure kubernetes_network_plugin_replaces_kube_proxy is not set + when: + - kubernetes_network_plugin_variant != 'with-kube-router' run_once: yes assert: - msg: "this network plugin can not replace kube-proxy please set kubernetes_network_plugin_replaces_kube_proxy to false." + msg: "kubeguard variant '{{ kubernetes_network_plugin_variant }}' can not replace kube-proxy please set kubernetes_network_plugin_replaces_kube_proxy to false or configure a differnt kubernetes_network_plugin_variant." that: - not kubernetes_network_plugin_replaces_kube_proxy @@ -82,3 +84,12 @@ template: src: net_kubeguard/cni.json.j2 dest: /etc/cni/net.d/kubeguard.json + +- name: install packages needed for debugging kube-router + when: kubernetes_network_plugin_variant == 'with-kube-router' + apt: + name: + - iptables + - ipvsadm + - ipset + state: present diff --git a/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml b/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml index 95fee7c8..f364fb5f 100644 --- a/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml +++ b/roles/kubernetes/kubeadm/master/tasks/net_kubeguard.yml @@ -1,3 +1,13 @@ --- -### kubeguard needs to be deployed before the cluster has been initialized. -### there is nothing more todo here. +- name: install kube-router variant + when: "kubernetes_network_plugin_variant == 'with-kube-router'" + block: + - name: generate kubeguard (kube-router) configuration + template: + src: "net_kubeguard/kube-router.{{ kubernetes_network_plugin_version }}.yml.j2" + dest: /etc/kubernetes/network-plugin.yml + + - name: install kubeguard (kube-router) on to the cluster + command: kubectl --kubeconfig /etc/kubernetes/admin.conf apply -f /etc/kubernetes/network-plugin.yml + register: kubeguard_apply_result + changed_when: (kubeguard_apply_result.stdout_lines | reject("regex", " unchanged$") | list | length) > 0 diff --git a/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 b/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 new file mode 100644 index 00000000..51bfdaae --- /dev/null +++ b/roles/kubernetes/kubeadm/master/templates/net_kubeguard/kube-router.0.4.0.yml.j2 @@ -0,0 +1,171 @@ +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: 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=false + - --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 + env: + - name: NODE_NAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + 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: kubeconfig + mountPath: /var/lib/kube-router + readOnly: true + - name: xtables-lock + mountPath: /run/xtables.lock + readOnly: false + 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: 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 |