Ansible及playbook的相关操作

1、给受管主机部署yum仓库，示例如下：

仓库1 ： Name: base ​

               Description: baseos ​                

               Base url: Index of /centos-vault/8.5.2111/BaseOS/x86_64/os/ ​

                需要验证软件包 GPG 签名 ​ GPG key 在 /etc/pki/rpm-gpg/RPM-GPG-KEY-* ​

                启用此软件仓库

仓库 2： Name: app

               Description: appstream

               Base url： Index of /centos-vault/8.5.2111/AppStream/x86_64/os/

               需要验证软件包 GPG 签名 GPG key 在： /etc/pki/rpm-gpg/RPM-GPG-KEY-*

               启用此软件仓库

[[email protected] test01]$ vim creat_yum.yml


---
- name: play1
  hosts: all
  tasks:
    - name: create base
      yum_repository:
        name: base
        description: baseos
        baseurl: https://mirrors.aliyun.com/centos-vault/8.2.2004/BaseOS/x86_64/os/
        gpgcheck: yes
    - name: create appstream
      yum_repository:
        name: app
        description: appstream
        baseurl: https://mirrors.aliyun.com/centos-vault/8.2.2004/AppStream/x86_64/os/
        gpgcheck: yes
    - name: install vsftpd
      yum:
        name: vsftpd
        state: latest

注：检查你自己的linux系统版本，并选择相应版本仓库。

部署成功后在受管主机上安装vsftpd软件包

2、给web主机组写一个playbook，该playbook有两个play，第一个play可以保证在web主机组上安装httpd和php，确保web主机组的/var/www/html/目录下面有一个文件为index.php，内容如下：

$ cat /var/www/html/index.php
<?php
phpinfo();

该playbook里面的第二个play用于测试该web主机组的web服务能否被成功访问index.php内容。

[[email protected] test01]$ vim inventory
[[email protected] test01]$ vim 1.yml

3、在受控节点上添加一个普通用户xiaohong，配置当前控制节点的用户可以免密登录xiaohong用户，并且xiaohong可以sudo。

[[email protected] test01]$ vim 2.yml

---
- name: play1
  hosts: node01
  tasks:
    - name: useradd xiaohong
      user:
        name: xiaohong
        state: present

    - name: xiaohong sudoers
      lineinfile:
        line: "xiaohong ALL=(ALL) NOPASSWD:ALL"
        path: /etc/sudoers
    - authorized_key:
        state: present
        user: xiaohong
        key: "{
   { lookup('file', '/home/admin/.ssh/id_rsa.pub') }}"