Ansible ansible.builtin.url module "Name does not resolve" error - debugging

Question

I am trying to use the ansible.builtin.url module to fetch the contents of a remote file on my remote server. I am using one of the examples in the official documentation page of the module, but occasionally I am getting the Name does not resolve error. I am saying occasionally because this behaviour is not consistent. Sometimes I get the results, sometimes I get the error...
How do you suggest I debug this error?
Ansible task
- name: url lookup splits lines by default
debug: msg="{{item}}"
loop: "{{ lookup('url', 'https://ip-ranges.amazonaws.com/ip-ranges.json', wantlist=True) }}"
Playbook output
TASK [url lookup splits lines by default] *********************************************************************************************
fatal: [my.domain.name]: FAILED! => {"msg": "An unhandled exception occurred while running the lookup plugin 'url'. Error was a <class 'ansible.errors.AnsibleError'>, original message: Failed lookup url for https://ip-ranges.amazonaws.com/ip-ranges.json : <urlopen error [Errno -2] Name does not resolve>"}
Ansible version
$ ansible --version
ansible 2.10.2
config file = /etc/ansible/ansible.cfg
configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python3.8/site-packages/ansible
executable location = /usr/bin/ansible
python version = 3.8.6 (default, Oct 5 2020, 00:23:48) [GCC 10.2.0]
Python packages versions
$ pip3 list
Package Version
---------------------- --------------------
appdirs 1.4.3
attrs 19.3.0
Automat 0.8.0
blinker 1.4
certifi 2019.11.28
chardet 3.0.4
Click 7.0
cloud-init 20.3
colorama 0.4.3
command-not-found 0.3
configobj 5.0.6
constantly 15.1.0
cryptography 2.8
dbus-python 1.2.16
distlib 0.3.0
distro 1.4.0
distro-info 0.23ubuntu1
entrypoints 0.3
fail2ban 0.11.1
filelock 3.0.12
httplib2 0.14.0
hyperlink 19.0.0
idna 2.8
importlib-metadata 1.5.0
incremental 16.10.1
Jinja2 2.10.1
jsonpatch 1.22
jsonpointer 2.0
jsonschema 3.2.0
keyring 18.0.1
language-selector 0.1
launchpadlib 1.10.13
lazr.restfulclient 0.14.2
lazr.uri 1.0.3
MarkupSafe 1.1.0
more-itertools 4.2.0
netifaces 0.10.4
oauthlib 3.1.0
pexpect 4.6.0
pip 20.0.2
pyasn1 0.4.2
pyasn1-modules 0.2.1
PyGObject 3.36.0
PyHamcrest 1.9.0
pyinotify 0.9.6
PyJWT 1.7.1
pymacaroons 0.13.0
PyNaCl 1.3.0
pyOpenSSL 19.0.0
pyrsistent 0.15.5
pyserial 3.4
python-apt 2.0.0+ubuntu0.20.4.1
python-debian 0.1.36ubuntu1
PyYAML 5.3.1
requests 2.22.0
requests-unixsocket 0.2.0
SecretStorage 2.3.1
service-identity 18.1.0
setuptools 45.2.0
simplejson 3.16.0
six 1.14.0
sos 4.0
ssh-import-id 5.10
systemd-python 234
Twisted 18.9.0
ubuntu-advantage-tools 20.3
ufw 0.36
unattended-upgrades 0.1
urllib3 1.25.8
virtualenv 20.0.17
wadllib 1.3.3
wheel 0.34.2
zipp 1.0.0
zope.interface 4.7.1
PS: Running dig ip-ranges.amazonaws.com on the target machine returns this output:
$ dig ip-ranges.amazonaws.com
; <<>> DiG 9.16.1-Ubuntu <<>> ip-ranges.amazonaws.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16015
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;ip-ranges.amazonaws.com. IN A
;; ANSWER SECTION:
ip-ranges.amazonaws.com. 900 IN CNAME d3mduebighmd0u.cloudfront.net.
d3mduebighmd0u.cloudfront.net. 59 IN A 13.224.93.97
d3mduebighmd0u.cloudfront.net. 59 IN A 13.224.93.6
d3mduebighmd0u.cloudfront.net. 59 IN A 13.224.93.36
d3mduebighmd0u.cloudfront.net. 59 IN A 13.224.93.58
;; Query time: 40 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Thu Nov 19 11:42:03 UTC 2020
;; MSG SIZE rcvd: 159

Answer 1

The problem had to do with the OS version the controller was running. Changing it from alpine:edge to alpine:3.12.1 fixed the problem. This issue helped: https://github.com/gliderlabs/docker-alpine/issues/539