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ansible
Aaron Stoeger
Aaron Stoeger

Reputation: 11

How to save multiple stdout_lines from multple hosts to one txt file using ANSIBLE?

The issue that I am having is that the output.txt file keeps getting overwritten when I have multiple hosts. Is there something that I am missing so that I can have information from multiple hosts saved in the same .txt file? This is the playbook that I am currently running. 

hosts: ROUTERS
gather_facts: false
connection: network_cli


tasks:
  -name: Cellular_hardware
   ios_command:
     commands:
        -  sh run | i hostname
        -  sh cellular 0/2/0 hardware | i Modem Firmware|PRI

  register: output

- name: copy output to file
  debug:
   var: output

- name: copy output to file
  copy:
   content: "{{ output.stdout_lines }}('\n')"
   dest: "output.txt"

Upvotes: 1

Views: 2437

Answers (2)

Vladimir Botka
Vladimir Botka

Reputation: 68404

To create one file at the controller with the output from all hosts use template and delegate the task to localhost. Run it once. For example

- name: copy output to file
  template:
    src: output.txt.j2
    dest: output.txt
  delegate_to: localhost
  run_once: true

shell> cat output.txt.j2
{% for host in ansible_play_hosts_all %}
{{ host }}
{{ hostvars[host]['output']['stdout_lines'] }}
{% endfor %}

(not tested)

Fit the template to your needs.

The strategies can influence the availability of the variables. See ansible_play_hosts_all vs. ansible_play_batch. It is a good idea to split the playbook to 2 plays. Collect the output of all hosts in the first play and write the file in the second play. For example

shell> cat playbook.yml
- name: Collect output
  hosts: ROUTERS
  gather_facts: false
  connection: network_cli
  tasks:
    - name: Cellular_hardware
      ios_command:
        commands:
          - sh run | i hostname
          - sh cellular 0/2/0 hardware | i Modem Firmware|PRI
      register: output
    - name: Debug output
      debug:
        var: output

- name: Write output to file
  hosts: ROUTERS
  gather_facts: false
  connection: network_cli
  tasks:
    - name: copy output to file
      template:
        src: output.txt.j2
        dest: output.txt
      delegate_to: localhost
      run_once: true

(not tested)

Upvotes: 3

nesinor
nesinor

Reputation: 1864

I you can use lineinfile module and append a record to the file, I have used lineinfile, it worked for me to get output in the file based on audit records.

- name: Add a line to a file. lineinfile: path: /tmp/output.txt line: "{{ output.stdout_lines }}" create: yes delegate_to: localhost

Upvotes: 0

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