Gather a List of Configured IP Addresses

Question

I want to pull out the lines of a Juniper config that assign an IPv6 address to an interface and save that output to a file.

The output I am after is generated with the command 'show configuration | display set| match "inet6 address" '

I'm building an Ansible playbook and have pinballed off of errors to end up with the below task. It is basically giving me the complete interface configs, and I just want to narrow it down to the lines that would fit the "match" line in the manual command. The commented out filters aren't working and I can't find documentation that explains filters in a way that I understand.

- name: "Get selected configuration hierarchies"
  juniper_junos_config:
    host: "{{ ansible_host }}"
    retrieve: "committed"
    config_mode : "private"
    filter: "<configuration><interfaces/></configuration>"
    #filter: "<configuration><interfaces/><family/><inet6/><address/></configuration>"
    #filter: "inet6/address"
    format: "set"
    options:
      inherit: "inherit"
    dest: "{{ inventory_hostname }}-inet6-config"
  register: response
- name: "Print result"
  debug:
    var: response

Output:

ok: [LAB-QFX5110-1] => {
    "response": {
        "changed": false,
"config": "\nset interfaces xe-0/0/0 apply-groups-except jumbo-frames\nset interfaces xe-0/0/0 description \"Test Laptop - DMZ;000\"\nset interfaces xe-0/0/0 gigether-options 802.3ad ae12\n<SNIP>\nset interfaces lo0 unit 10 family inet address 100.126.0.x/32\nset interfaces lo0 unit 10 family inet6 address ABCD:EF00:0000:01c4::1/128\n<SNIP>/n",
"config_lines": [
            "",
            "set interfaces xe-0/0/0 apply-groups-except jumbo-frames",
            "set interfaces xe-0/0/0 description \"Test Laptop - DMZ;000\"",
            "set interfaces xe-0/0/0 gigether-options 802.3ad ae12",
            "<SNIP>",
            "set interfaces lo0 unit 10 family inet address 100.126.0.x/32",
            "set interfaces lo0 unit 10 family inet6 address ABCD:EF00:0000:01c4::1/128",
            "<SNIP>",
        ],
        "failed": false,
        "msg": "Configuration has been: opened, retrieved, closed."
    }
}

I just want the lines that read:

set interfaces unit X family inet6 address XXXX:YYYY:ZZZZ:1234::1/127

But I can't seem to plug in the correct filter.

I will also mention that if there is a better way to gather this, I am open to exploring it. It just seems like this is the task Ansible was created to perform.

not familiar with Juniper ansible module, but do you think you could show us the `response` variable structure and contents? it would help provide (hopefully) an answer to your problem. assuming your task is the optimal one, my goal would be to try parse the `response` variable, and catch the lines containing the `inet6` string. — ilias-sp, Aug 29 '19 at 21:40
i presume the output of the variable is loooooooong. in this case, then just its structure - so we can see the fields it contains - would suffice. — ilias-sp, Aug 29 '19 at 21:45
I have edited the question to provide the requested output. If I am reading your comments correctly, you are saying I have to now program Ansible to process the output? — penfold1972, Aug 30 '19 at 13:07
yes, please see answer on how you can parse the `response` and get the lines you need. — ilias-sp, Aug 30 '19 at 13:48

ilias-sp · Accepted Answer · 2019-08-30T18:35:57.200

here is how to do it. since your response dictionary contains the output split by lines, we will use the config_lines key, process line by line:

code:

---
- hosts: localhost
  gather_facts: false
  vars:
    response:
      changed: false
      config: |2-

        set interfaces xe-0/0/0 apply-groups-except jumbo-frames
        set interfaces xe-0/0/0 description "Test Laptop - DMZ;000"
        set interfaces xe-0/0/0 gigether-options 802.3ad ae12
        <SNIP>
        set interfaces lo0 unit 10 family inet address 100.126.0.x/32
        set interfaces lo0 unit 10 family inet6 address ABCD:EF00:0000:01c4::1/128
        <SNIP>/n
      config_lines:
      - ''
      - set interfaces xe-0/0/0 apply-groups-except jumbo-frames
      - set interfaces xe-0/0/0 description "Test Laptop - DMZ;000"
      - set interfaces xe-0/0/0 gigether-options 802.3ad ae12
      - "<SNIP>"
      - set interfaces lo0 unit 10 family inet address 100.126.0.x/32
      - set interfaces lo0 unit 10 family inet6 address ABCD:EF00:0000:01c4::1/128
      - "<SNIP>"
      failed: false
      msg: 'Configuration has been: opened, retrieved, closed.'

  tasks:

  - name: find entries containing inet6 address, add to results
    set_fact:
      interfaces: "{{ interfaces | default([]) + [item] }}"
    when: item is search('inet6 address')
    with_items:
    - "{{ response.config_lines }}"

  - debug:
      var: interfaces

  - name: save results to file
    template:
      src: results.j2
      dest: /tmp/results.out

you will need a jinja2 template for the last task to work (under same dir as your playbook), with contents:

results.j2:

# processing results:

{% for interface in interfaces -%}
{{ interface }}
{%- endfor %}

1st task parses each line and if the when condition is met, its adding the given line to a results , the interfaces list. 2nd task prints that variable. 3rd task saves the results to a file under /tmp/.

hope it helps

This is SO close to what I was looking for. I am hoping to save the "interfaces" output into a file. When I add the "dest: " line to the task, it seems to invalidate the whole task. I figure I've got the syntax wrong, but I cannot figure it out. — penfold1972, Aug 30 '19 at 18:21
have a look at [template module](https://docs.ansible.com/ansible/latest/modules/template_module.html?highlight=template). plz see updated answer — ilias-sp, Aug 30 '19 at 18:35
After I took out the minus sign in the template, I got exactly the output I was looking for. Thanks! — penfold1972, Aug 30 '19 at 19:05

Gather a List of Configured IP Addresses

1 Answers1