Extract IP addresses from a text file with other values - ansible

Question

Let's say you have a variable file on your localhost. We can call it values.txt, and its contents are:
isjwidywiudywdiuwqoq10.110.195.108xxsxww/ed/swqqwfdfwef8.8.8.8
You want to extract only the IP address values from all of this junk. I have made multiple attempts at this using the file lookup and the ipaddr filter. What I'm doing looks like this:
- name: extract IPs only
debug:
msg: "{{ query('file', 'values.txt') | ipaddr }}"
However, this does not work! How can I go about doing this to where I get only the IP's?

Answer 1

You can do this with a regular expression filter. To extract all the ip addresses from a string, it sounds like you want to find everything that matches [0-9]+\.[0-9]+\.[0-9]+\.[0-9]). To extract all matches of an expression from a string, Ansible provides us with the regex_findall filter.
For example:
- hosts: localhost
gather_facts: false
tasks:
- debug:
msg: >-
{{ "isjwidywiudywdiuwqoq10.110.195.108xxsxww/ed/swqqwfdfwef8.8.8.8" | regex_findall("[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+") }}
The above playbook will output:
TASK [debug] ******************************************************************************************************************************************************************************************************
ok: [localhost] => {
"msg": [
"10.110.195.108",
"8.8.8.8"
]
}

Answer 2

Here's one example
# // Ansible playbook to Extract IP addresses from a text file
- hosts: localhost
gather_facts: false
tasks:
- name: Extract IP addresses from a text file
set_fact:
ips: "{{ lookup('file', '/tmp/tmpdir/test.txt') | regex_findall('(?<!\\d)(?:\\d{1,3}\\.){3}\\d{1,3}(?!\\d)') }}"
register: result
- debug:
msg: "{{ result }}"
Sample run
╰─ cat test.txt
hello
12.14.34.45asdfadsf234234
asdfasldfkj23.34.45.23alsdjfwerk
fafn aslkdfj vahsdifadk 23.43.34.232 asldkvvnasdfads
╰─ ansible-playbook test.yaml
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
PLAY [localhost] ********************************************************************************************************************************************************************************
TASK [Extract IP addresses from a text file] ****************************************************************************************************************************************************
ok: [localhost]
TASK [debug] ************************************************************************************************************************************************************************************
ok: [localhost] => {
"msg": {
"ansible_facts": {
"ips": [
"12.14.34.45",
"23.34.45.23",
"23.43.34.232"
]
},
"changed": false,
"failed": false
}
}
PLAY RECAP **************************************************************************************************************************************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0