RHCE作业练习

1、生成主机文件
将一个初始模板文件从http://content.example.com/hosts.j2下载到/home/student/ansible
完成该模板，以便用它生成以下文件：针对每个清单主机包含一行内容，其格式与 /etc/hosts 相同
创建名为 /home/student/ansible/hosts.yml 的playbook，它将使用此模板在 dev 主机组中的主机上生成文件 /etc/myhosts。
该 playbook 运行后，dev 主机组中主机上的文件/etc/myhosts 应针对每个受管主机包含一行内容：
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.24.1.6 servera.lab1.example.com servera
172.24.1.7 serverb.lab1.example.com serverb
172.24.1.8 serverc.lab1.example.com serverc
172.24.1.9 serverd.lab1.example.com serverd
172.24.1.10 bastion.lab1.example.com bastion

[student@ansible ansible]$ cat hosts.j2 
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
{% for host in groups.all %}
{{ hostvars[host].ansible_enp1s0.ipv4.address }}  {{ hostvars[host].ansible_fqdn }}  {{ hostvars[host].ansible_hostname }}
{% endfor %}


[student@ansible ansible]$ cat hosts.yml 
---
- name: get all facts
  hosts: node1
  
- name: cp to myhosts
  hosts: dev
  tasks: 
    - name: cp file
      template: 
        src: /home/student/ansible/hosts.j2
        dest: /etc/myhosts

2、创建密码库
按照下方所述，创建一个 Ansible 库来存储用户密码：
库名称为 /home/student/ansible/locker.yml
库中含有两个变量，名称如下：
pw_developer，值为 Imadev
pw_manager，值为 Imamgr
用于加密和解密该库的密码为whenyouwishuponastar
密码存储在文件 /home/student/ansible/secret.txt中

[student@workstation ansible]$ vim locker.yml
---
pw_developer: lmadev
pw_manager: lmamgr
[student@workstation ansible]$ echo whenyouwishuponastar > secret.txt
[student@workstation ansible]$ chmod 600 secret.txt
[student@workstation ansible]$ ansible-vault encrypt locker.yml --vault-id=/home/student/ansible/secret.txt 

Encryption successful

3、创建用户账户
从 http://content.example.com/user_list.yml 下载要创建的用户的列表，并将它保存到 /home/student/ansible
在本次考试中使用在其他位置创建的密码库 /home/student/ansible/locker.yml，创建名为/home/student/ansible/users.yml 的playbook，从而按以下所述创建用户帐户：
职位描述为 developer 的用户应当：
在 dev 和 test 主机组中的受管节点上创建
从 pw_developer 变量分配密码,密码有效期为30天
是附加组 student 的成员
职位描述为 manager 的用户应当：
在 prod 主机组中的受管节点上创建
从 pw_manager 变量分配密码，密码有效期为30天
是附加组 opsmgr 的成员
密码应采用 SHA512 哈希格式。
您的 playbook 应能够在本次考试中使用在其他位置创建的库密码文件/home/student/ansible/secret.txt 正常运行

[student@ansible ansible]$ cat user_list.yml 
users: 
  - name: bob 
    job: developer 
  - name: sally 
    job: manager 
  - name: fred 
    job: developer


[student@ansible ansible]$ cat users.yml 
--- 
- name: create developer user
  hosts: dev,test
  vars_files: 
    - /home/student/ansible/locker.yml
    - /home/student/ansible/user_list.yml

  tasks: 
    - name: create group student
      group: 
        name: student
        state: present

    - name: create user in developer
      user: 
        name: "{{ item.name }}"
        groups: student
        password: "{{ pw_developer | password_hash('sha512') }}"
        state: present

      loop: "{{ users }}"
      when: item.job = = "developer"
    - name: chage
      shell: 
        cmd: chage -M 30 {{ item.name }}
      loop: "{{ users }}"
      when: item.job = = "developer"

    - name: create manager user
      hosts: prod
      vars_files: 
        - /home/student/ansible/locker.yml
        - /home/student/ansible/user_list.yml

      tasks: 
        - name: create group opsmgr
          group: 
            name: opsmgr
            state: present

        - name: create user in manager 
          user: 
            name: "{{ item.name }}"
            groups: opsmgr
            password: "{{ pw_manager | password_hash('sha512') }}"
            state: present

          loop: "{{ users }}"
          when: item.job = = "manager"

        - name: chage1
          shell: 
            cmd: chage -M 30 "{{ item.name }}"
          loop: "{{ users }}"
          when: item.job = = "manager"