kubeasz/roles/prepare/tasks/main.yml

- name: prepare some dirs
  file: name={{ item }} state=directory
  with_items:
  - "{{ bin_dir }}"
  - "{{ ca_dir }}"
  - /root/.kube
  - /etc/docker

- name: 写入环境变量$PATH 
  shell: "sed -i '/export PATH=/d' /etc/profile && \
	echo export PATH={{ bin_dir }}:$PATH >> /etc/profile"

- name: 下载证书工具 CFSSL和 kubectl
  copy: src={{ base_dir }}/bin/{{ item }} dest={{ bin_dir }}/{{ item }} mode=0755
  with_items:
  - cfssl
  - cfssl-certinfo
  - cfssljson
  - kubectl

- name: 安装kubeconfig配置文件
  copy: src=/root/.kube/config dest=/root/.kube/config

- name: 分发CA 证书
  copy: src={{ ca_dir }}/{{ item }} dest={{ ca_dir }}/{{ item }} mode=0644
  with_items:
  - ca.pem
  - ca-key.pem
  - ca.csr
  - ca-config.json

# 先拉取下节点的ansible setup信息，起到缓存效果，否则后续when 判断可能失败
- name: 缓存ansilbe setup信息
  setup: gather_subset=min

# 删除默认安装
- name: 删除ubuntu默认安装
  when: ansible_distribution == "Ubuntu"
  apt: name={{ item }} state=absent
  with_items:
  - ufw
  - lxd
  - lxd-client
  - lxcfs
  - lxc-common

- block:
  when: ansible_distribution == "CentOS"
    - name: 删除centos默认安装
      yum: name={{ item }} state=absent
      with_items:
        - firewalld
        - python-firewall
        - firewalld-filesystem

    - name: 安装基础软件包
      yum: name={{ item }}  state=installed
      with_items:
        - vim
        - git
        - wget
        - psmisc # 安装psmisc 才能使用命令killall，它在keepalive的监测脚本中使用到
        - net-tools
        - bash-completion

    - name: 临时关闭 selinux
      shell: "setenforce 0" 
      failed_when: false

    - name: 永久关闭 selinux
      lineinfile:
        dest: /etc/selinux/config
        regexp: "^SELINUX"
        line: "SELINUX=disabled"

- name: 添加 kubectl 命令自动补全
  shell: "sed -i '/kubectl completion/d' ~/.bashrc && \
	echo 'source <(kubectl completion bash)' >> ~/.bashrc"

# 设置系统参数for k8s
# 消除docker info 警告WARNING: bridge-nf-call-ip[6]tables is disabled
- name: 设置系统参数
  copy: src=95-k8s-sysctl.conf dest=/etc/sysctl.d/95-k8s-sysctl.conf

- name: 加载br_netfilter模块
  modprobe: name=br_netfilter state=present
  ignore_errors: true
  
- name: 生效系统参数
  shell: "sysctl -p /etc/sysctl.d/95-k8s-sysctl.conf"
  ignore_errors: true