I have 2 variables as a list in ansible
host_list:
- 1.1.1.1
- 2.2.2.2
port_list:
- 443
- 80
and I want to get the 3rd variable as a list of lists:
all_comb = [[1.1.1.1, 443], [1.1.1.1, 80], [2.2.2.2, 443], [2.2.2.2, 80]]
How can i get it in Ansible?
Use product filter
all_comb: "{{ host_list|product(port_list) }}"
gives
all_comb:
- [1.1.1.1, 443]
- [1.1.1.1, 80]
- [2.2.2.2, 443]
- [2.2.2.2, 80]
you can use the with_nested or a query('nested', listA, listB) loop, see both implementations below:
with_nested:
- name: merge lists
set_fact:
merged_list: "{{ merged_list|default([]) + [item] }}"
with_nested:
- "{{ host_list }}"
- "{{ port_list }}"
- name: display result
debug:
var: merged_list
with query:
- name: merge lists
set_fact:
merged_list: "{{ merged_list|default([]) + [item] }}"
loop: "{{ query('nested', host_list, port_list) }}"
- name: display result
debug:
var: merged_list
result of the latter:
PLAY [localhost] ******************************************************************************************************************************************************************************************************
TASK [merge lists] ****************************************************************************************************************************************************************************************************
ok: [localhost] => (item=[u'1.1.1.1', 443])
ok: [localhost] => (item=[u'1.1.1.1', 80])
ok: [localhost] => (item=[u'2.2.2.2', 443])
ok: [localhost] => (item=[u'2.2.2.2', 80])
TASK [display result] *************************************************************************************************************************************************************************************************
ok: [localhost] => {
"merged_list": [
[
"1.1.1.1",
443
],
[
"1.1.1.1",
80
],
[
"2.2.2.2",
443
],
[
"2.2.2.2",
80
]
]
}
cheers
Related
I have some servers with a lot of wordpress instances, who I ask them what versions they have.
- name: CONTADOR WP VERSIONES
shell: mycommand
register: wp_versions
- debug: msg: "{{ wp_versions.stdout_lines }}"
For example:
TASK [debug] *********************************************************************
ok: [server1] => {
"msg": [
"5.1.13"
]
}
ok: [server2] => {
"msg": [
"5.1.12",
"5.1.13"
]
}
ok: [server3] => {
"msg": [
"5.1.10",
"5.1.13",
]
}
I need to list a unique values like this:
"msg": [
"5.1.10",
"5.1.12",
"5.1.13",
]
I have tried all that i found but nothing works as I want.
Thanks
Use special variable ansible_play_hosts and extract the variables from the hostvars
- set_fact:
all_vers: "{{ ansible_play_hosts|
map('extract', hostvars, ['wp_versions', 'stdout_lines'])|
flatten|unique }}"
run_once: true
gives
all_vers:
- 5.1.13
- 5.1.12
- 5.1.10
You could do something like this:
- hosts: all
gather_facts: false
tasks:
- name: CONTADOR WP VERSIONES
shell: mycommand
register: wp_versions
- hosts: localhost
gather_facts: false
tasks:
# This tasks builds a flattened list of all the
# wp_versions.stdout_lines values collected from your hosts.
- name: Collect wp_versions information
set_fact:
all_wp_versions_pre: "{{ all_wp_versions_pre + hostvars[item].wp_versions.stdout_lines }}"
loop: "{{ groups.all }}"
vars:
all_wp_versions_pre: []
# Here we use the `unique` filter to produce a list of
# unique versions.
- name: Set all_wp_versions fact
set_fact:
all_wp_versions: "{{ all_wp_versions_pre|unique }}"
- debug:
var: all_wp_versions
Given you examples, this would produce the following output:
TASK [debug] ********************************************************************************************
ok: [localhost] => {
"all_wp_versions": [
"5.1.13",
"5.1.12",
"5.1.10"
]
}
I'm having trouble grasping data manipulation in Ansible. Here's the setup:
- hosts: emirr01
gather_facts: no
vars:
setup:
- emirr01: { label: "label1" }
- emirr02: { label: "label2" }
- emirr03: { label: "label3" }
lookup: [ "emirr01", "emirr02"]
use_labels: [ ]
tasks:
- debug: msg="setup={{ setup }}"
- debug: msg="lookup={{ lookup }}"
- debug: msg="item0={{ item.0 }} item1={{ item.1 }}"
when: inventory_hostname == item.1
with_nested:
- "{{ setup }}"
- "{{ lookup }}"
- set_fact:
use_labels: "{{ use_labels + [ item.1.label ] }}"
when: item.0 == item.1.label
with_nested:
- "{{ setup }}"
- "{{ lookup }}"
- debug: msg="use_labels={{ use_labels }}"
What I need is to set a fact use_labels which is a list of labels as defined in setup list for each host found in lookup list. What I expect is a list like this:
[ "label1", "label2" ]
My problem is not being able to "reach" label in a list I get in item.1 which is (example):
item1=[{'emirr02': {'label': 'label2'}}
Here's is the error:
$ ansible-playbook test.yml -l emirr01
PLAY [emirr01] ****************************************************************************************************************************************************************************************************************************************************************************************************************************
TASK [debug] ******************************************************************************************************************************************************************************************************************************************************************************************************************************
ok: [emirr01] =>
msg: 'setup=[{''emirr01'': {''label'': ''label1''}}, {''emirr02'': {''label'': ''label2''}}, {''emirr03'': {''label'': ''label3''}}]'
TASK [debug] ******************************************************************************************************************************************************************************************************************************************************************************************************************************
ok: [emirr01] =>
msg: lookup=['emirr01', 'emirr02']
TASK [debug] ******************************************************************************************************************************************************************************************************************************************************************************************************************************
ok: [emirr01] => (item=[{'emirr01': {'label': 'label1'}}, 'emirr01']) =>
msg: 'item0={''emirr01'': {''label'': ''label1''}} item1=emirr01'
skipping: [emirr01] => (item=[{'emirr01': {'label': 'label1'}}, 'emirr02'])
ok: [emirr01] => (item=[{'emirr02': {'label': 'label2'}}, 'emirr01']) =>
msg: 'item0={''emirr02'': {''label'': ''label2''}} item1=emirr01'
skipping: [emirr01] => (item=[{'emirr02': {'label': 'label2'}}, 'emirr02'])
ok: [emirr01] => (item=[{'emirr03': {'label': 'label3'}}, 'emirr01']) =>
msg: 'item0={''emirr03'': {''label'': ''label3''}} item1=emirr01'
skipping: [emirr01] => (item=[{'emirr03': {'label': 'label3'}}, 'emirr02'])
TASK [set_fact] ***************************************************************************************************************************************************************************************************************************************************************************************************************************
fatal: [emirr01]: FAILED! =>
msg: |-
The conditional check 'item.0 == item.1.label' failed. The error was: error while evaluating conditional (item.0 == item.1.label): 'ansible.utils.unsafe_proxy.AnsibleUnsafeText object' has no attribute 'label'
The error appears to be in '/home/ansible/test.yml': line 21, column 7, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
- set_fact:
^ here
It all boils down to "digging" for a value from a dictionary in a list. Does anyone have an idea of how to reach item.1.label? It's a little bit frustrating since this is trivial in Python or other programming languages but in Ansible... Or maybe my mistake is to use a wrong kind of with_* loop for this purpose?
Q: "Expect a list like this [label1, label2]"
setup:
- emirr01: { label: "label1" }
- emirr02: { label: "label2" }
- emirr03: { label: "label3" }
lookup: [ "emirr01", "emirr02"]
A: This is a typical example of a wrong data structure for this use-case. A list of dictionaries can't be used in mapping the filter extract. Moreover, the keys in the dictionaries don't have to be unique, because they are hidden in the items of the list. The solution is simple with the data in the dictionary
setup:
emirr01: { label: "label1" }
emirr02: { label: "label2" }
emirr03: { label: "label3" }
- set_fact:
use_labels: "{{ lookup|map('extract', setup, 'label')|list }}"
gives
use_labels:
- label1
- label2
One of the options is creating a dictionary from the list first. For example
- set_fact:
setup2: "{{ setup2|default({})|combine(item) }}"
loop: "{{ setup }}"
Then the dictionary setup2 can be used to get the same result
It's possible to filter the list directly. For example, the task below gives the same result too
- set_fact:
use_labels: "{{ setup|map('dict2items')|map('first')|
selectattr('key', 'in', lookup )|
map(attribute='value.label')|
list }}"
Your issue with the with_nested is actually coming from how those "two-lists" loops are working.
When you are using loops like with_nested, the item.0 is the item of the first list, while the item.1 is the item of the second list.
Because lookup is a list and not a list of dictionaries like
lookup:
- label: "emirr01"
- label: "emirr02"
You can use the value of item.1 right away.
So the way to have you issue fixed is to use it this way:
- set_fact:
use_labels: "{{ use_labels + [ item.0[item.1].label ] }}"
when: item.0[item.1].label is defined
with_nested:
- "{{ setup }}"
- "{{ lookup }}"
Here is a playbook demonstrating this:
- hosts: localhost
gather_facts: no
tasks:
- set_fact:
use_labels: "{{ use_labels | default([]) + [ item.0[item.1].label ] }}"
when: item.0[item.1].label is defined
with_nested:
- "{{ setup }}"
- "{{ lookup }}"
vars:
setup:
- emirr01:
label: "label1"
- emirr02:
label: "label2"
- emirr03:
label: "label3"
lookup:
- "emirr01"
- "emirr02"
- debug:
msg: "{{ use_labels }}"
Wich gives:
PLAY [localhost] ***************************************************************************************************
TASK [set_fact] ****************************************************************************************************
ok: [localhost] => (item=[{'emirr01': {'label': 'label1'}}, 'emirr01'])
skipping: [localhost] => (item=[{'emirr01': {'label': 'label1'}}, 'emirr02'])
skipping: [localhost] => (item=[{'emirr02': {'label': 'label2'}}, 'emirr01'])
ok: [localhost] => (item=[{'emirr02': {'label': 'label2'}}, 'emirr02'])
skipping: [localhost] => (item=[{'emirr03': {'label': 'label3'}}, 'emirr01'])
skipping: [localhost] => (item=[{'emirr03': {'label': 'label3'}}, 'emirr02'])
TASK [debug] *******************************************************************************************************
ok: [localhost] => {
"msg": [
"label1",
"label2"
]
}
PLAY RECAP *********************************************************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
I am trying to write a task that stores the dictionary values in variable based on the condition .
I'm new to this technology. Please anyone help on the below request.
I tried with the below code. Please check below.
- set_fact:
v1: "{{ v1|default([]) + item.keys() if item.values() == false else 1 }}"
loop: "{{ dv }}"
'dv' is a dictionary.
[{1A:True},{2A:True},{3A:False},{4A:False}]
Actually, here I'm trying to store false values in v1 by using comparison operators only.
Expected output:
v1 should contain following list:
[3A,4A]
Ansible Version: 2.5.15
Below works for me:
---
- hosts: localhost
vars:
dv:
1A: 'True'
2A: 'False'
3A: 'True'
4A: 'False'
tasks:
- name: debug
debug:
msg: "{{ item.value }}"
loop: "{{ dv | dict2items }}"
- set_fact:
v1: "{{ v1| default([]) + item.key if (item.value in 'False') else('') }}"
loop: "{{ dv | dict2items }}"
- debug:
var: v1
output -->
TASK [set_fact] *********************************************************************************************************
ok: [localhost] => (item={'key': u'1A', 'value': u'True'})
ok: [localhost] => (item={'key': u'3A', 'value': u'True'})
ok: [localhost] => (item={'key': u'2A', 'value': u'False'})
ok: [localhost] => (item={'key': u'4A', 'value': u'False'})
TASK [debug] ************************************************************************************************************
ok: [localhost] => {
"v1": "2A4A"
}
You can try the below code.
- hosts: localhost
connection: local
vars:
dv: [{1A:True},{2A:True},{3A:False},{4A:False}]
v2: []
v1: []
tasks:
- set_fact:
v1: "{{ v1|default([]) }} + [ {{ v1.append((item.keys()|first).split(':')[0]) if (item.keys()|first).split(':')[1] == 'False' else v2.append('1') }} ]"
with_items: "{{ dv }}"
- debug:
msg: "{{ v1 }}"
Here v2 is a variable declared to direct if the conditions are not met.
Output of the a above code is a below:
ok: [localhost] => {
"msg": [
"3A",
"4A"
]
}
I have a list of devices, each of which has a varying list of attributes that must be created on the devices, one at a time. Is there a way to build a nested set of loops to do this? The with_nested construct applies every attribute to every device; I need only a single attribute per device per call.
This playbook demonstrates what I have tried (Ansible 2.7.1, Python 2.7.1):
- name: Test nested list traversal
hosts: localhost
connection: local
vars:
Stuff:
- Name: DeviceA
Info: AInfo
Values:
- ValueA1
- ValueA2
- Name: DeviceB
Info: BInfo
Values:
- ValueB1
- ValueB2
- ValueB3
tasks:
- name: Loop test
debug:
msg: "{{ item.Name }},{{ item.Info }}, {{ item.Values }}"
with_items:
- "{{ Stuff }}"
What I get: (One call per device, containing all attributes at once)
ok: [localhost] => (item={u'Info': u'AInfo', u'Values': [u'ValueA1', u'ValueA2'], u'Name': u'DeviceA'}) =>
msg: DeviceA,AInfo, [u'ValueA1', u'ValueA2']
ok: [localhost] => (item={u'Info': u'BInfo', u'Values': [u'ValueB1', u'ValueB2', u'ValueB3'], u'Name': u'DeviceB'}) =>
msg: DeviceB,BInfo, [u'ValueB1', u'ValueB2', u'ValueB3']
What I want (each msg represents a separate operation to be performed on the device with just that one attribute)
msg: DeviceA, AInfo, ValueA1
msg: DeviceA, AInfo, ValueA2
msg: DeviceB, BInfo, ValueB1
msg: DeviceB, BInfo, ValueB2
msg: DeviceB, BInfo, ValueB3
You can get what you want using the subelements filter:
---
- hosts: localhost
gather_facts: false
vars:
Stuff:
- Name: DeviceA
Info: AInfo
Values:
- ValueA1
- ValueA2
- Name: DeviceB
Info: BInfo
Values:
- ValueB1
- ValueB2
- ValueB3
tasks:
- debug:
msg: "{{ item.0.Name }}, {{ item.0.Info }}, {{ item.1 }}"
loop: "{{ Stuff|subelements('Values') }}"
loop_control:
label: "{{ item.0.Name }}"
Running the above playbook gets you:
PLAY [localhost] ******************************************************************************************************************************************************************************
TASK [debug] **********************************************************************************************************************************************************************************
ok: [localhost] => (item=DeviceA) => {
"msg": "DeviceA, AInfo, ValueA1"
}
ok: [localhost] => (item=DeviceA) => {
"msg": "DeviceA, AInfo, ValueA2"
}
ok: [localhost] => (item=DeviceB) => {
"msg": "DeviceB, BInfo, ValueB1"
}
ok: [localhost] => (item=DeviceB) => {
"msg": "DeviceB, BInfo, ValueB2"
}
ok: [localhost] => (item=DeviceB) => {
"msg": "DeviceB, BInfo, ValueB3"
}
PLAY RECAP ************************************************************************************************************************************************************************************
localhost : ok=1 changed=0 unreachable=0 failed=0
I have the following on my playbook:
- name: Debug
debug:
msg: "{{ item.stdout }}"
with_items:
- "{{ tapip.results }}"
- "{{ hostname.results }}"
Which returns me this:
TASK [Debug] ***************************************************************************************************************************************************************************************************
ok: [localhost] => (item=None) => {
"msg": "192.168.0.104"
}
ok: [localhost] => (item=None) => {
"msg": "hostname1"
}
I would like to break the hostname and ip into 2 different strings. What is the best way to achieve this?
btw, I have also tried the following:
- name: Debug
debug:
msg: "{{ item.stdout.0 }} {{ item.stdout.1 }}"
with_items:
- "{{ tapip.results }}"
- "{{ hostname.results }}"
Which returns this:
TASK [Debug] ***************************************************************************************************************************************************************************************************
ok: [localhost] => (item=None) => {
"msg": "1"
}
ok: [localhost] => (item=None) => {
"msg": "h"
}
Any ideas would be appreciated
Try this
name: Debug
debug:
msg: "{{ item.stdout }}"
with_items:
tapip.results
hostname.results
name: Debug
debug:
msg: "{{ item.stdout }}"
with_items:
tapip.results
hostname.results