【IT Notes】RHCE測驗第六題 INSTALL ROLES USING ANSIBLE GALAXY

Use Ansible Galaxy with a requirements file called /home/student/ansible/roles/requirements.yml to download and install roles to the default roles directory /home/student/ansible/roles from the following URLs:

• http://example.classroom.com/materials/haproxy.tar The name of this role should be balancer

• http://example.classroom.com/materials/phpinfo.tar The name of this role should be phpinfo

【題前說明】
 這題要用ansible galaxy安裝兩個function，分別是php和負載平衡功能，題目其實很簡單，我覺得比較難的是我自己模擬不出load balance的功能，這兩支程式是從補習班老師那邊取得的，抓過來我就直接放在Data主機上供解題時的下載點。

一．解題過程：

[student@workstation ansible]$ vim requirements.yml

---
- src: http://example.classroom.com/cd/exam_ehce8/haproxy.tar.gz
  name: balancer
- src: http://example.classroom.com/cd/exam_ehce8/phpinfo.tar.gz
  name: phpinfo

[student@workstation ansible]$ ansible-galaxy role install -r requirements.yml

要看到successfully的訊息才成功

二．驗證結果

檢查roles資料夾下有沒有安裝好

這題要做的事情不多，不過下面還有題目會用到這邊的roles，所以還是不能做不出來或大意。

三．恢復解題前的環境

[student@workstation ansible]$ vim 06-lab-requirements-stop.yml

---
- name: remove downloaded roles
  hosts: 127.0.0.1
  tasks:
    - name: remove role balancer and phpinfo
      shell: ansible-galaxy remove "{{ item }}"
      loop:
      - balancer
      - phpinfo

    - name: remove requirements file
      file:
        path: /home/student/ansible/requirements.yml
        state: absent

[student@workstation ansible]$ ansible-playbook 06-lab-requirements-stop.yml