Registering multiple variables in a loop

Question

I have a variable yaml file:

---
apps:
  - client
  - node
  - gateway
  - ic
  - consul

and this task:

- name: register if apps exists
  stat: path="/etc/init.d/{{ item }}"
  with_items: apps
  register: "{{ item.stat.exists }}exists"

I need to end up with a variable for each app with a value of true or false whether the file exists or not:

clientexists = true
nodeexists = true
gatewayexists = false
icexists = true
consulexists = false

For some reason, the item and exists concat is not working.

How can I achieve that??

Sahil Gulati · Accepted Answer · 2017-05-15 03:55:20Z

6

Try this hope this will help you out. While looping in Stats.yml then msg field will contain your desired output.

Variables.yml Here we are defining variables

---
apps:
  - client
  - node
  - gateway
  - ic
  - consul

Stats.yml

---
- hosts: localhost
  name: Gathering facts
  vars_files:
  - /path/to/variables.yml
  tasks:
  - name: "Here we are printing variables"
    debug:
     msg: "{{apps}}"

  - name: "Here we are gathering stats and registering it"
    stat:
     path: "/etc/init.d/{{item}}"
    register: folder_stats
    with_items:
    - "{{apps}}"

  - name: "Looping over registered variables, Its msg field will contain desired output"
    debug:
     msg: "{{item.invocation.module_args.path}}: {{item.stat.exists}}"
    with_items:
    - "{{folder_stats.results}}"

...

folder_stats will contain whole result, for individually referring to single - single result You can use it like this in you playbook.

folder_stats.results[0].stat.exists 
folder_stats.results[1].stat.exists 
folder_stats.results[2].stat.exists 
folder_stats.results[3].stat.exists

edited May 15, 2017 at 3:55

answered May 14, 2017 at 9:08

Sahil Gulati

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10 Comments

Moshe Over a year ago

How can I use folder_stats later on as a varible? I need to see for each app if it exists, how can I do that?

Sahil Gulati Over a year ago

@Moshe Through out this playbook, you can use it like this with_items: - "{{folder_stats.results}}" for looping

Sahil Gulati Over a year ago

While looping you will get such results in loop

ok: ,...         "changed": false,          "invocation": {             "module_args": {                 "checksum_algorithm": "sha1",                  "follow": false,                  "get_checksum": true,                  "get_md5": true,                  "mime": false,                  "path": "/etc/init.d/consul"             },              "module_name": "stat"         },          "item": "consul",          "stat": {             "exists": false         }     },      "msg": "/etc/init.d/consul: False" }

Sahil Gulati Over a year ago

and msg field will contain you desired output you can have a look on it stackoverflow.com/questions/42186301/…

Moshe Over a year ago

But I need to be able to access each app individually, not with a loop. I need to be able to access the nodeexists on different places and I can't loop each time.

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