Add ansible scripts to deploy Kubernetes

For know, only one node is supported.

- build/configure CNI drivers
- Init Kubernetes

Change-Id: I6dd9dff7a4c7dfe2d7148812d2656966115c5ce9
Signed-off-by: Mytnyk, Volodymyr <volodymyrx.mytnyk@intel.com>

3 files changed, 146 insertions, 0 deletions

diff --git a/ansible/roles/init_kubeadm/tasks/kubeadm.yml b/ansible/roles/init_kubeadm/tasks/kubeadm.yml
new file mode 100644
index 000000000..7c808a01c
--- /dev/null
+++ b/ansible/roles/init_kubeadm/tasks/kubeadm.yml
@@ -0,0 +1,50 @@
+# Copyright (c) 2018-2019 Intel Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+- set_fact:
+    service_cidr_param: --service-cidr={{ kubeadm_service_cidr }}
+  when: 'kubeadm_service_cidr is defined'
+
+- set_fact:
+    pod_network_cidr_param: --pod-network-cidr={{ kubeadm_pod_network_cidr }}
+  when: 'kubeadm_pod_network_cidr is defined'
+
+- set_fact:
+    kubernetes_version: --kubernetes-version {{ kubeadm_kubernetes_version }}
+  when: 'kubeadm_kubernetes_version is defined'
+
+- name: Initialize Kubernetes cluster
+  command: >
+           kubeadm init {{ pod_network_cidr_param|default('') }}
+           {{ service_cidr_param|default('') }} {{ kubernetes_version|default('') }}
+           --ignore-preflight-errors=all
+
+- name: Create Kubernetes configuration dir
+  file: path={{ ansible_env.HOME }}/.kube state=directory
+
+- name: Setup Kubernetes environment
+  copy:
+    src: /etc/kubernetes/admin.conf
+    dest: "{{ ansible_env.HOME }}/.kube/config"
+    remote_src: yes
+
+- name: Allow to schedule pods on the master
+  command: kubectl taint nodes --all node-role.kubernetes.io/master-
+
+- name: Wait for kube-dns pod to be in running state
+  command: kubectl get pods --namespace=kube-system -l k8s-app=kube-dns -o json
+  register: result
+  until: result.stdout|from_json|json_query('items[].status.phase|[0]') == "Running"
+  retries: 30
+  delay: 2
diff --git a/ansible/roles/init_kubeadm/tasks/kubectl.yml b/ansible/roles/init_kubeadm/tasks/kubectl.yml
new file mode 100644
index 000000000..3e9f2d71a
--- /dev/null
+++ b/ansible/roles/init_kubeadm/tasks/kubectl.yml
@@ -0,0 +1,26 @@
+# Copyright (c) 2018-2019 Intel Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+- name: Generate temporary resource file
+  tempfile: state=file prefix=kubectl.{{ item }}.
+  register: config_file
+
+- name: Generate {{ item }} resource file
+  template: src={{ item }}.j2 dest={{ config_file.path }}
+
+- name: Create {{ item }} resource
+  command: kubectl create -f {{ config_file.path }}
+
+- name: Create Kubernetes configuration dir
+  file: path={{ config_file.path  }} state=absent
diff --git a/ansible/roles/init_kubeadm/tasks/main.yml b/ansible/roles/init_kubeadm/tasks/main.yml
new file mode 100644
index 000000000..df7334ce1
--- /dev/null
+++ b/ansible/roles/init_kubeadm/tasks/main.yml
@@ -0,0 +1,70 @@
+# Copyright (c) 2018-2019 Intel Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+- name: Disable swap
+  command: swapoff -a
+  ignore_errors: true
+
+- name: Reset Kubernetes cluster
+  command: kubeadm reset
+
+- name: Clean Kubernetes directories (w/o removing the folder itself)
+  shell: rm -fr {{ item }}/*
+  with_items:
+    - /etc/kubernetes
+    - /var/lib/cni
+    - /etc/cmk
+
+- name: Create Multus CNI plugin dir
+  file: path=/etc/cni/net.d state=directory
+
+- name: Configure Multus CNI plugin
+  template: src=10-multus-cni.conf.j2 dest=/etc/cni/net.d/10-multus-cni.conf owner=root mode=0644
+
+- name: Change default kubelet cluster dns IP
+  lineinfile:
+    path: /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
+    regexp: '^(.*)--cluster-dns=([0-9\.]*)( +.*)$'
+    line: '\1--cluster-dns={{ kubelet_cluster_dns_ip }}\3'
+    backrefs: yes
+    backup: yes
+
+- name: Systemd daemon reload
+  command: systemctl daemon-reload
+
+- name: Restart kubelet
+  service: name=kubelet state=restarted
+
+- name: Initialize kubeadm
+  include: kubeadm.yml
+
+- name: Create CMK Kubernetes resources
+  command: kubectl create -f {{ item }}
+  with_items:
+    - "{{ cmk_rbc_rules_url }}"
+    - "{{ cmk_serviceaccount }}"
+
+- name: Create Kubernetes resources
+  include: kubectl.yml
+  with_items:
+    - crd-network.yaml
+    - net-flannel.yaml
+    - roles.yaml
+    - kube-flannel.yaml
+    - cmk-init-pod.yaml
+
+- name: Create a ClusterRoleBinding for a particular ClusterRole
+  command: >
+           kubectl create clusterrolebinding multus-node-{{ ansible_hostname }}
+           --clusterrole=multus-crd-overpowered --user=system:node:{{ ansible_hostname }}