实验目标

在自建环境中能够测试RHCE磁盘管理题目
在部分主机上做特殊处理，使得自己练习环境与实际环境相似

实验环境

ansible配置文件

[defaults]
inventory=./inventory
remote_user=rhce
ask_pass=false
roles_path=./roles
host_key_checking=false
[privilege_escalation]
become=true
become_user=root
become_method=sudo
become_ask_pass=false

清单主机文件

[dev]
servera
[test]
serverb
[prod]
serverc
serverd
[balancers]
servere
[webservers:children]
prod

脚本文件

---
- name: create resreach lvm
  hosts: all
  tasks:
    - name: show disk message
      shell: 'lsblk'
      register: disk_info
    - name: create vgm for dev,test
      parted:
        device: /dev/sdb
        number: 1
        state: present
        part_start: 1MiB
        part_end: 2000MiB
        resize: true
	  when: 'sdb' in {{ disk_info }}
      register: vgm_info
      when: inventory_hostname in {{ item }}
      with_items:
        - groups['dev']
        - groups['test']
    - name: create vgm for prod
      parted:
        device: /dev/sdb
        number: 1
        state: present
        part_end: "20%"
        resize: true
        flags: [ lvm ]
      when: inventory_hostname in groups['prod']
# 在已分配的pv中创建名为research的vg
    - name: create vg research 100%
      lvg:
        vg: research
        pvs: /dev/sdb1
        pesize: 16

    - block:
        - name: create lvm 1500M
          lvol:
            vg: research
            lv: data
            size: 1500
          register: lvm_info
      rescue:
        - name: show vgm_info
          debug:
            msg: "Could not create logical volume of that size"
        - name: create lvm 800M
          lvol:
            vg: research
            lv: data
            size: 800
        - name: show device size
          debug:
            msg: "{{ ansible_devices.sdb.size }}"
      always:
        - name: create filesystem
          filesystem:
            fstype: xfs
            dev: /dev/research/data
        - name: remove lvm data
          shell: "lvremove -y /dev/research/data"