【ansible循环+判断】

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已于 2022-11-01 00:23:25 修改

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文章标签： 5g ansible

于 2022-11-01 00:01:00 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_72901306/article/details/127625818

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ansible循环+判断

练习：

给node1添加一块5G的硬盘
给node2添加一块2G的硬盘
node3不添加硬盘

写一个partition.yml的playbook，满足如下要求：
给所有的受控主机创建分区，创建2500M的分区，然后对分区进行格式化，格式化为xfs的文件系统。
如果不能满足创建2500M的分区，则显示错误消息为：disk size not enough，接着改为创建1000M。
如果没有/dev/sdb硬盘，则显示错误消息为：the device is not sdb

[student@ansible ansible]$ cat partition.yml 
---
- name: parted
  hosts: all

  tasks:
    - block:
        - name: create 2500M
          parted:
            device: /dev/sda
            number: 1
            state: present
            part_type: primary
            part_start: 10MiB
            part_end: 2510MiB
      rescue:
        - name: not enough 2500m
          debug:
            msg: disk size not  enough
        - name: create 1000m
          parted:
            device: /dev/sda
            number: 1
            part_type: primary
            part_start: 10MiB
            part_end: 1010MiB
            state: present

      always:
        - name: format
          filesystem:
            fstype: xfs
            dev: /dev/sda1
      when: "ansible_devices.sda is defined"

    - name:  not defined
      debug:
        msg: the device is not 
      when: "ansible_devices.sda is defined"
[student@ansible ansible]$

效果

[student@ansible ansible]$ ansible-playbook partition.yml 

PLAY [parted] ******************************************************************

TASK [Gathering Facts] *********************************************************
ok: [node2]
ok: [node3]
ok: [node1]

TASK [create 2500M] ************************************************************
ok: [node3]
ok: [node2]
ok: [node1]

TASK [format] ******************************************************************
ok: [node1]
ok: [node2]
ok: [node3]

TASK [not defined] *************************************************************
ok: [node1] => {
    "msg": "the device is not"
}
ok: [node2] => {
    "msg": "the device is not"
}
ok: [node3] => {
    "msg": "the device is not"
}

PLAY RECAP *********************************************************************
node1                      : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
node2                      : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
node3                      : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

验证

[root@node1 ~]# lsblk  | grep sda
sda             8:0    0   20G  0 disk 
├─sda1          8:1    0    1G  0 part /boot
└─sda2          8:2    0   19G  0 part 
[root@node1 ~]# blkid /dev/sda2
/dev/sda2: UUID="Ae9drF-pGML-uyYX-4BFv-qqtc-zUnQ-OYcBtD" TYPE="LVM2_member" PARTUUID="ac8d5d42-02"
[root@node1 ~]# 

[root@node2 ~]# lsblk | grep sda
sda             8:0    0   20G  0 disk 
├─sda1          8:1    0    1G  0 part /boot
└─sda2          8:2    0   19G  0 part 
[root@node2 ~]# blkid /dev/sda1
/dev/sda1: UUID="5b39739e-93ff-41e4-afe0-1e0c4a247ea3" TYPE="xfs" PARTUUID="efd1763a-01"
[root@node2 ~]#