Malformed Block in Ansible

I'm trying to run a playbook that gathers yum history logs, and consolidates them on a single server. I ran this playbook

---
- name: Gather yum history from all hosts
  hosts: all
  become: true
  tasks:
    - name: Run 'yum history' command
      shell: yum history
      register: yum_history_output

    - name: Save yum history to local file
      copy:
        content: |
          Host: {{ inventory_hostname }}
          ========================================
          {{ yum_history_output.stdout }}
          ========================================
        dest: "/tmp/yum_history_{{ inventory_hostname }}.log"

- name: Fetch all yum history logs to control node
  hosts: all
  gather_facts: false
  tasks:
    - name: Fetch log files to control node
      fetch:
        src: "/tmp/yum_history_{{ inventory_hostname }}.log"
        dest: "./yum_history_logs/"
        flat: yes

and, after some formatting, got a malformed block error which just seemed to put the whole playbook into a single block. What am I doing wrong?

I was given a bunch of formatting issues that I fixed, mostly deleting a lot of spaces because it didn't like the spaces in vi, but now I get a malformed block, and have no idea what to do next.

Solution

Write the files at the controller. Delegate the copy task to localhost. For example, given the registered data for testing

    - command: echo "yum history"
      register: yum_history_output

Create the files

    - copy:
        dest: "/tmp/yum_history_{{ inventory_hostname }}.log"
        content: |
          Host: {{ inventory_hostname }}
          ========================================
          {{ yum_history_output.stdout }}
          ========================================
      delegate_to: localhost

gives

shell> ls -1 /tmp | grep yum
yum_history_test_01.log
yum_history_test_02.log
yum_history_test_03.log

shell> cat /tmp/yum_history_test_01.log 
Host: test_01
========================================
yum history
========================================

shell> cat /tmp/yum_history_test_02.log 
Host: test_02
========================================
yum history
========================================

shell> cat /tmp/yum_history_test_03.log 
Host: test_03
========================================
yum history
========================================

^{Example of a complete playbook for testing
shell> cat pb.yml
- hosts: all

tasks:

- command: echo "yum history"
register: yum_history_output

- copy:
dest: "/tmp/yum_history_{{ inventory_hostname }}.log"
content: |
Host: {{ inventory_hostname }}
========================================
{{ yum_history_output.stdout }}
========================================
delegate_to: localhost

shell> ansible-playbook pb.yml

PLAY [all] **********************************************************************************************************

TASK [command] ******************************************************************************************************
changed: [test_01]
changed: [test_03]
changed: [test_02]

TASK [copy] *********************************************************************************************************
changed: [test_01 -> localhost]
changed: [test_02 -> localhost]
changed: [test_03 -> localhost]

PLAY RECAP **********************************************************************************************************
test_01 : ok=2 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
test_02 : ok=2 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
test_03 : ok=2 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0}