writing output to a csv file

[SK]

Hi,

Ansible version - 2.9

Facing issue in writing output to a csv file, its not writing the output consistently into the file.

Having an inventory file with three server IPs,  script will execute command to check the disk space of each server and writing the output to a csv file.

Sometimes its writing all the three server details into the file, sometimes its writing only one or two server details into the file. 

  - hosts: localhost

    connection: local

    gather_facts: False

    vars:

      filext: ".csv"

    tasks:

      - name: get the username running the deploy

        local_action: command whoami

        register: username_on_the_host

      - name: get current dir

        local_action: command pwd

        register: current_dir

      - name: create dir

        file: path={{ current_dir.stdout }}/HCT state=directory

      - name: Set file path here

        set_fact:

            file_path: "{{ current_dir.stdout }}/HCT/HCT_check{{ filext }}"

      - name: Creates file

        file: path={{ file_path }}  state=touch

# Writing to a csv file

    - hosts:

      - masters

    become: false

    vars:

      disk_space: "Able to get disk space for the CM {{ hostname }} "

      disk_space_error: "The server {{ hostname  }} is down for some reason. Please check manually."

      disk_space_run_status: "{{disk_space}}"

      cur_date: "{{ansible_date_time.iso8601}}"

    tasks:

      - name: runnig command to get file system which are occupied 

        command: bash -c "df -h | awk '$5>20'"

        register: disk_space_output

        changed_when: false

        ignore_errors: True

        no_log: True

      - name: Log the task get list of file systems with space occupied 

        lineinfile:

           dest: "{{ hostvars['localhost']['file_path'] }}"

           line: "File system occupying disk space, {{ hostname }}, {{ ip_address }}, {{ cur_date }}"

           insertafter: EOF

           state: present

        delegate_to: localhost

Please help to resolve this issue.

[Nuno Jordão]

Hello,

If you are writing to the file in parallel into the localhost you may have concurrency issues. Try to use only one fork to see if it helps.

Nuno Jordão

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[SK]

Thank Nuno, after changed the fork value its working fine now.

[Nuno Jordão]

I'm glad it worked. Beware that, depending on your playbook and number of hosts, using only one fork may slow down it a lot.

If you are using Ansible 2.9 the "throttle: 1" in the file writing task may be better.

Nuno Jordão

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