Compare two variables

[marcin_...@hotmail.com]

Hi All,

I am trying to compare two variables however it looks like it does not work. I am new to ansible so please be understanding. I know that this script is not optimal but I am still learning.

My code looks like this

---

- name: change MTU

  hosts: router

  connection: local

  vars:

    mtu: []

    mtu_1: '["1500"]'

    contents: "{{ lookup('file', '/home/marcin/var.json') }}"

  tasks:

    - name: show ip interface et0/0

      ios_command:

        commands: 

          - sh ip interface et0/0

        provider: "{{ cli }}"

      register: showrun

    - copy: content="{{ showrun.stdout_lines | to_nice_json }}" dest="/home/marcin/show.json"

    - name: grep

      shell: grep -Eo "([A-Z])\w+\s\is\s[0-9]+" /home/marcin/show.json

      register: my_grep

    - debug: var=my_grep

    - copy: content="{{ my_grep.stdout_lines }}" dest="/home/marcin/var.json"

    - debug: var=contents

    - name: check MTU

      set_fact:

        mtu: "{{ mtu + [item.split()[2]] }}"

      with_items: 

        - "{{ contents }}"

    - debug: msg="{{ mtu }}"

    - name: change MTU if smaller then 1500

      ios_config:

        lines:

          - ip mtu 1500

        parents: interface ethernet0/0

        provider: "{{ cli }}"

    - debug: msg="MTU match"

      when: 'mtu ==  mtu_1'

    - debug: msg="MTU mismatch"

      when: 'mtu !=  mtu_1'

    - debug: var=mtu

    - debug: var=mtu_1

this is what I get when I run ansible even I see that both var's are the same the script change the MTU under interface.

TASK [change MTU if smaller then 1500] *****************************************

changed: [10.10.10.3]

TASK [debug] *******************************************************************

skipping: [10.10.10.3]

TASK [debug] *******************************************************************

ok: [10.10.10.3] => {

    "msg": "MTU mismatch"

}

TASK [debug] *******************************************************************

ok: [10.10.10.3] => {

    "mtu": [

        "1500"

    ]

}

TASK [debug] *******************************************************************

ok: [10.10.10.3] => {

    "mtu_1": [

        "1500"

    ] 

}

PLAY RECAP *********************************************************************

10.10.10.3                 : ok=13   changed=2    unreachable=0    failed=0   

Any advice what I am doing wrong?

[marcin_...@hotmail.com]

Problem solved

This is working scenario

---

- name: change MTU

  hosts: router

  connection: local

  vars:

    mtu_1: 'MTU is 1500'

    contents: "{{ lookup('file', '/home/marcin/var.json') }}"

  tasks:

    - name: show ip interface et0/0

      ios_command:

        commands: 

          - sh ip interface et0/0

        provider: "{{ cli }}"

      register: showrun

    - copy: content="{{ showrun.stdout_lines | to_nice_json }}" dest="/home/marcin/show.json"

    - name: grep

      shell: grep -Eo "([A-Z])\w+\s\is\s[0-9]+" /home/marcin/show.json

      register: my_grep

    - copy: content="{{ my_grep.stdout }}" dest="/home/marcin/var.json"

    - debug: var=contents

    - name: change MTU if smaller then 1500

      ios_config:

        lines:

          - ip mtu 1500

        parents: interface ethernet0/0

        provider: "{{ cli }}"

      when: 

       - contents !=  mtu_1

    - debug: msg="MTU mismatch"

      when: 

       - contents !=  mtu_1

       

    - debug: msg="MTU match"

      when: 

       - contents ==  mtu_1