playbook編寫（四）
檔案處理
檔案處理的模組（常用）
Blockinfile 該模組可以管理員在指定的檔案中插入“一段文字”
Copy 該模組主要用於拷貝檔案，將控制節點上的檔案拷貝到被管理主機
Fatch 該模組從遠端主機中拉取檔案到被管理的節點
Lineinfile 支援正則表示式
File 修改檔案許可權
State 檢視檔案狀態
Synchronize ------>等價於 rsync 批量同步檔案
Sefcontext 修改檔案上下文永久生效，修改系統的 selinux 相關的配置檔案
使用 JINJA2 模版部署自定義檔案
· 修改檔案時呼叫 JINJA2模版
JINJA2介紹
使用 JINJA2 模版
[student@workstation file-template]$ cat motd.j2 This is the system {{ ansible_facts['fqdn'] }}. This is a {{ ansible_facts['distribution'] }} version {{ ansible_facts['distribution_version'] }} system. Only usethis system with permission. Please report issues to: {{ system_owner }}. [student@workstation file-template]$ cat motd.yml --- - name: configure SOE hosts: all remote_user: devops become: true vars: - system_owner: [email protected] tasks:- name: configure /etc/motd template: src: motd.j2 dest: /etc/motd owner: root group: root mode: 0644
練習：
Generate a hosts file
Download an initial template file from
http://content.example.com/materials/hosts.j2 to /home/devops/ansible
Complete the template so that it can be used to generate a file with a line for
each inventory host in the same format as /etc/hosts
Create a playbook called /home/devops/ansible/hosts.yml that uses this template
to generate the file /etc/myhosts on hosts in the dev host group.
When the playbook is run, the file /etc/myhosts on hosts in the dev host group should
have a line for each managed host:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.25.250.10 servera.lab.example.com servera
172.25.250.11 serverb.lab.example.com serverb
172.25.250.12 serverc.lab.example.com serverc
172.25.250.13 serverd.lab.example.com serverd
172.25.250.14 servere.lab.example.com servere
172.25.250.15 serverf.lab.example.com serverf
NOTE: The order in which the inventory host names appear is not important.
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