Ansible循环shell命令列表并将变量传递给命令？

Question

我试图弄清楚如何循环 shell 命令，但命令包含变量。我使用此链接作为参考 https://github.com/VerosK/ansible-iscsi-target/blob/master/tasks/implementations/lio.yml

代码是循环遍历每个磁盘的命令列表。

这是很长的工作代码:::

---
-
  become: true
  gather_facts: false
  hosts: isci_ansible_centos01
  vars:
    iscsi_target_base: iqn.2017-11.local.centos7
    iscsi_targets:
      - wwn: iqn.2019-8.local.centos7
        disks:
        - name: 'iscsidisk1'
          device: '/dev/sdb'
          vgname: 'vg.iscsi1'
          lvname: 'lv.iscsi1'
          mode: 'block'
        - name: iscsidisk2
          device: /dev/sdc
          vgname: vg.iscsi2
          lvname: lv.iscsi2
          mode: block
  tasks:

    #targetcli '/backstores/block' create scsids1 /dev/vg-iscsi/lv-iscsi
    - name: Create backstore
      shell: targetcli '/backstores/{{ item.1.mode }}' create {{ item.1.name }} /dev/{{ item.1.vgname }}/{{ item.1.lvname }}
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks
      ignore_errors: yes

    #targetcli '/iscsi' create iqn.2017-11.local.centos7:disk1
    - name: Create target
      shell: targetcli '/iscsi' create {{ iscsi_target_base }}:{{item.1.name}}
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks
      ignore_errors: yes

    # targetcli '/iscsi/iqn.2017-11.local.centos7:disk1/tpg1/acls' create iqn.2017-11.local.centos7:node1
    - name: Create nodes
      shell: targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1/acls' create {{ iscsi_target_base }}:node{{item.1.name}}
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks

    # targetcli '/iscsi/iqn.2017-11.local.centos7:disk1/tpg1' set attribute authentication=0 demo_mode_write_protect=0
    - name: Set Authentication
      shell: targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1' set attribute authentication=0 demo_mode_write_protect=0
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks

    # targetcli '/iscsi/iqn.2017-11.local.centos7:disk1/tpg1' set attribute generate_node_acls=1
    - name: Set geenerate_node_acls
      shell: targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1' set attribute generate_node_acls=1
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks

    # targetcli '/iscsi/iqn.2017-11.local.centos7:disk1/tpg1/luns' create /backstores/block/scsids
    - name: Create backing_store
      shell: targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1/luns' create /backstores/block/{{ item.1.name }}
      with_subelements:
        - "{{ iscsi_targets }}"
        - disks

这是我想要做的就是将其转换为::: 但我认为变量 item 变得混乱。支持这个方法？？？我只是想知道以供将来参考。

- name: Configure ISCSI using SHELL LOOP
  shell: {{ item }}
  loop:
    - targetcli '/backstores/{{ item.1.mode }}' create {{ item.1.name }} /dev/{{ item.1.vgname }}/{{ item.1.lvname }}
    - targetcli '/iscsi' create {{ iscsi_target_base }}:{{item.1.name}}
    - targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1/acls' create {{ iscsi_target_base }}:node{{item.1.name}}
    - targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1' set attribute authentication=0 demo_mode_write_protect=0
    - targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1' set attribute generate_node_acls=1
    - targetcli '/iscsi/{{ iscsi_target_base }}:{{item.1.name}}/tpg1/luns' create /backstores/block/{{ item.1.name }}
  with_subelements:
     - "{{ iscsi_targets }}"
     - disks

顺便说一句，我不得不使用 with_subelements 来访问 iscsi_targets 中的项目。出于某种原因，它不允许我使用 with_items 和使用 {{item.device}}

访问

Answer 1

    - shell: "{{ item }}"
      loop:
        - "AAA {{ item.1.name }} {{ item.1.device }}"
        - "BBB {{ item.1.name }} {{ item.1.device }}"
      with_subelements:
         - "{{ targets }}"
         - disks

问：“是否支持这种方法？”

答：不可以。不可能将 2 个loops 放入一项任务中。

相反，可以使用命令创建文件

shell> cat commands.yml
- debug:
    msg: "{{ cmd_item }}"
  loop:
    - "AAA {{ item.1.name }} {{ item.1.device }}"
    - "BBB {{ item.1.name }} {{ item.1.device }}"
  loop_control:
    loop_var: cmd_item

和迭代（循环）include_tasks。下面的戏

- hosts: localhost
  vars:
    targets:
      - wwn: 2019.centos7
        disks:
        - name: 'disk1'
          device: '/dev/sdb'
        - name: 'disk2'
          device: '/dev/sdc'
  tasks:
    - include_tasks: commands.yml
      loop: "{{ targets|subelements('disks') }}"

给

    "msg": "AAA disk1 /dev/sdb"
    "msg": "BBB disk1 /dev/sdb"
    "msg": "AAA disk2 /dev/sdc"
    "msg": "BBB disk2 /dev/sdc"