【发布时间】：2019-11-19 11:28:37
【问题描述】：
通过 ansible 我需要解析一个 JSON 文件并根据内容在 linux 系统上运行某种命令。以下几行示例：
[
{
"Hostname": "cavia",
"Farm": "paolo",
"Cluster": "paperino",
"Gateway": "10.14.35.1",
"Dns": "172.26.5.110,172.26.5.111,172.26.16.11,172.26.16.12",
"Routes": "0",
"Network": [
{
"MAC":"00:50:56:b6:c0:db",
"Vlan":"107 - 10.14.8.0/24 - BE WW TF",
"Scope": "Production",
"IP": "10.14.35.9",
"MASK": "255.255.255.224"
},
{
"MAC":"50:56:b6:19:0c",
"Vlan":"5 - 10.4.81.0/24 - BE WW TF",
"Scope": "BE",
"IP": "10.4.5.9",
"MASK": "255.255.255.224"
},
{
"MAC":"00:50:56:b6:19:aa",
"Vlan":"4 - 0.14.81.0/24 - BE WW TF",
"Scope": "NFS",
"IP": "172.10.0.5",
"MASK": "255.255.0.0"
},
{
"MAC":"00:50:b6:19:0c",
"Vlan":"10087 - 10.14.81.0/24 - BE WW TF",
"Scope": "Backup",
"IP": "10.4.96.28",
"MASK": "255.255.254.0"
}
],
"Disk": [
{
"ID": "36000c29ccb2f18976786181535e88772",
"Scope": "New",
"DiskFs": "/prova"
},
{
"ID": "36000c29ccb2f18976786181535e86553",
"Scope": "New",
"DiskFs": "/pippo"
}
]
}
]
实际上，我能够： - 从 json 中获取磁盘 ID 并在系统上查找该 ID - 如果上一步成功，playbook 会创建分区、vg、lvol、文件系统并挂载文件系统 - 我缺少的是..这些操作必须仅在 json 文件中的 Scope 为“New”时执行。
我分享剧本详情：
---
- name: "Phase 4 : Filesystem Configuration"
hosts: just_parsed
data: "{{ lookup('file', '../data/data.json') }}"
gather_facts: true
tasks:
- set_fact:
disklen: "{{ data[0].Disk | length }}"
# - debug:
# var: data[0].Disk[{{ item }}].DiskFs
# with_sequence: start=0 end={{ disklen|int -1 }}
- name: Clearing any existing mountpoint
file:
path: "{{ data[0].Disk[item | int() ].DiskFs }}"
state: absent
when: data[0].Disk[item | int() ].Scope =='New'
with_sequence: start=0 end={{ disklen|int -1 }}
become: true
become_method: sudo
- name: Creating new mountpoint
file:
path: "{{ data[0].Disk[item | int() ].DiskFs }}"
state: directory
mode: '0755'
when: data[0].Disk[item | int() ].Scope =='New'
with_sequence: start=0 end={{ disklen|int -1 }}
become: true
become_method: sudo
- name: Creating partitions
parted:
device: "/dev/{{ item.1.dev }}"
number: 1
flags: [ lvm ]
label: msdos
state: present
become: true
become_method: sudo
loop: "{{ data[0].Disk|
json_query('[].{dev: DiskFs, id: ID}')|
product(
ansible_facts.devices|dict2items|
json_query('[].{dev: key, ids: value.links.ids}'))|
list }}"
when: item.1.ids|map('search', item.0.id) is any
- name: Creating volume groups
lvg:
vg: "{{ item.0.dev | basename }}-vg"
pvs: "/dev/{{ item.1.dev }}1"
become: true
become_method: sudo
loop: "{{ data[0].Disk|
json_query('[].{dev: DiskFs, id: ID}')|
product(
ansible_facts.devices|dict2items|
json_query('[].{dev: key, ids: value.links.ids}'))|
list }}"
when: item.1.ids|map('search', item.0.id) is any
- name: Creating logical volumes
lvol:
vg: "{{ item.0.dev | basename }}-vg"
lv: "{{ item.0.dev | basename }}-vol"
size: 100%FREE
become: true
become_method: sudo
loop: "{{ data[0].Disk|
json_query('[].{dev: DiskFs, id: ID}')|
product(
ansible_facts.devices|dict2items|
json_query('[].{dev: key, ids: value.links.ids}'))|
list }}"
when: item.1.ids|map('search', item.0.id) is any
- name: Creating filesystems
filesystem:
fstype: xfs
dev: "/dev/{{ item.0.dev | basename }}-vg/{{ item.0.dev | basename }}-vol"
become: true
become_method: sudo
loop: "{{ data[0].Disk|
json_query('[].{dev: DiskFs, id: ID}')|
product(
ansible_facts.devices|dict2items|
json_query('[].{dev: key, ids: value.links.ids}'))|
list }}"
when: item.1.ids|map('search', item.0.id) is any
- name: Mounting filesystems
mount:
path: "{{ item.0.dev }}"
src: "/dev/{{ item.0.dev | basename }}-vg/{{ item.0.dev | basename }}-vol"
fstype: xfs
state: mounted
become: true
become_method: sudo
loop: "{{ data[0].Disk|
json_query('[].{dev: DiskFs, id: ID}')|
product(
ansible_facts.devices|dict2items|
json_query('[].{dev: key, ids: value.links.ids}'))|
list }}"
when: item.1.ids|map('search', item.0.id) is any
data[0].Disk[i].Scope 的条件如何写？当磁盘 ID 匹配时，只有当该磁盘的范围是 New 时，我才需要执行所有操作。
谢谢大家
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