roles/k8s: Add kubernetes cluster playbook

1 files changed, 115 insertions, 0 deletions

diff --git a/roles/k8s/main.yml b/roles/k8s/main.yml
new file mode 100644
index 0000000..148df32
--- /dev/null
+++ b/roles/k8s/main.yml
@@ -0,0 +1,115 @@
+---
+# Target: centos8
+- hosts: k8s
+  vars: 
+    username: k8s
+    home_directory: "/home/{{ username }}"
+    k8s_version: 1.17.0
+  tasks:
+  - name: Ensuring group exists
+    group:
+      name: "{{ username }}"
+      state: present
+  - name: Creating user and making home directory
+    user:
+      system: yes
+      state: present
+      name: "{{ username }}"
+      groups: "{{ username }}"
+      home: "{{ home_directory }}"
+  - name: Adding Docker repository
+    get_url:
+      url: https://download.docker.com/linux/centos/docker-ce.repo
+      dest: /etc/yum.repos.d/
+  - name: Installing Docker
+    yum:
+      state: present
+      update_cache: yes
+      name:
+        - docker-ce-3:18.09.1-3.el7
+        - docker-ce-cli-1:18.09.1-3.el7
+        - containerd.io-1.2.0-3.el7
+        - tc
+  - name: Creating docker directory
+    file:
+      path: /etc/docker
+      state: directory
+      mode: '0755'
+  - name: Copying Docker daemon configuration
+    copy:
+      src: daemon.json
+      dest: /etc/docker/daemon.json
+      owner: root
+      group: root
+      mode: '0644'
+    register: dockerDaemonConfig
+  - name: Creating containerd override directory
+    file:
+      path: /etc/systemd/system/containerd.service.d/
+      state: directory
+      mode: '0755'
+  - name: Copying containerd override configuration
+    copy:
+      src: containerd-override.conf
+      dest: /etc/systemd/system/containerd.service.d/override.conf
+      owner: root
+      group: root
+      mode: '0644'
+  - name: Reloading systemd daemon
+    systemd:
+      daemon_reload: yes
+  - name: Ensuring Docker is enabled and started
+    systemd:
+      name: docker
+      state: started
+      enabled: yes
+  - name: Restarting Docker due to daemon config change
+    systemd:
+      name: docker
+      state: restarted
+    when: dockerDaemonConfig.changed
+  - name: Adding Kubernetes repository
+    yum_repository:
+      name: kubernetes
+      file: kubernetes
+      description: Kubernetes Repo
+      baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
+      gpgkey: https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+      gpgcheck: yes
+  - name: Installing kubelet and kubeadm on nodes
+    yum:
+      state: present
+      update_cache: yes
+      name:
+        - kubelet-{{ k8s_version }}-0
+        - kubeadm-{{ k8s_version }}-0
+
+- hosts: k8s_master
+  vars: 
+    username: k8s
+    home_directory: "/home/{{ username }}"
+    k8s_version: 1.17.0
+  tasks:
+    - name: Installing kubectl on master
+      yum:
+        state: present
+        name:
+          - kubectl-{{ k8s_version }}-0
+    - name: Copying kubelet environment file
+      copy:
+        src: kubelet
+        dest: /etc/sysconfig/kubelet
+        mode: '0644'
+    - name: Initialize Kubernetes cluster
+      shell: > 
+        kubeadm init --ignore-preflight-errors all --v=5 > k8s_cluster_initialization.log && 
+        touch .k8s_cluster_initialized
+      args: 
+        chdir: "{{ home_directory }}"
+        creates: .k8s_cluster_initialized
+      register: output
+    - debug: var=output
+    - block:
+      - name: Cloning repository
+    become: true
+    become_user: "{{ username }}"
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