ansible_sysfile

ansible_sysfile.yaml

# Permission denied error
- name: ensure transparent huge pages are disabled
  copy:
    content: never
    dest: "{{ celery_thp_file }}"
    owner: root
    group: root
    mode: 0644
  notify: restart redis-server service
  become: yes

# Permission denied error
- name: test
  lineinfile:
    dest: "{{ celery_thp_file }}"
    regexp: ^\S.*$
    line: never
    state: present
  become: yes
  
# Doesn't fail, but also doesn't change the file contents
- name: test
  shell: echo "never" > {{ celery_thp_file }}
  become: yes
  
 
# Command output with unsafe_writes: yes

fatal: [qa-invision-celery-broker-1]: FAILED! => {
    "changed": false,
    "checksum": "85777c03b72554cd08e721b6148dc27d2a50a7a6",
    "failed": true,
    "invocation": {
        "module_args": {
            "backup": false,
            "content": null,
            "delimiter": null,
            "dest": "/sys/kernel/mm/transparent_hugepage/enabled",
            "directory_mode": null,
            "follow": false,
            "force": true,
            "group": null,
            "mode": null,
            "original_basename": "tmpS8YmLK",
            "owner": null,
            "regexp": null,
            "remote_src": null,
            "selevel": null,
            "serole": null,
            "setype": null,
            "seuser": null,
            "src": "/home/mplanchard/.ansible/tmp/ansible-tmp-1486256017.53-188520396216549/source",
            "unsafe_writes": true,
            "validate": null
        }
    },
    "msg": "The destination directory (/sys/kernel/mm/transparent_hugepage) is not writable by the current user. Error was: [Errno 13] Permission denied: '/sys/kernel/mm/transparent_hugepage/.ansible_tmpvJ5yJYenabled'"
}


# Shell command -vvv output:
changed: [qa-invision-celery-broker-1] => {
    "changed": true,
    "cmd": "echo \"never\" > /sys/kernel/mm/transparent_hugepage/enabled",
    "delta": "0:00:00.002098",
    "end": "2017-02-05 01:00:03.211818",
    "invocation": {
        "module_args": {
            "_raw_params": "echo \"never\" > /sys/kernel/mm/transparent_hugepage/enabled",
            "_uses_shell": true,
            "chdir": null,
            "creates": null,
            "executable": null,
            "removes": null,
            "warn": true
        },
        "module_name": "command"
    },
    "rc": 0,
    "start": "2017-02-05 01:00:03.209720",
    "stderr": "",
    "stdout": "",
    "stdout_lines": [],
    "warnings": []
}

# Shell command "cat <path>" -vvv output
fatal: [qa-invision-celery-broker-1]: FAILED! => {
    "changed": true,
    "cmd": [
        "cat",
        "/sys/kernel/mm/transparent_hugepage/enabled"
    ],
    "delta": "0:00:00.002406",
    "end": "2017-02-05 01:00:06.221130",
    "failed": true,
    "failed_when_result": true,
    "invocation": {
        "module_args": {
            "_raw_params": "cat /sys/kernel/mm/transparent_hugepage/enabled",
            "_uses_shell": false,
            "chdir": null,
            "creates": null,
            "executable": null,
            "removes": null,
            "warn": true
        },
        "module_name": "command"
    },
    "rc": 0,
    "start": "2017-02-05 01:00:06.218724",
    "stderr": "",
    "stdout": "always madvise [never]",
    "stdout_lines": [
        "always madvise [never]"
    ],
    "warnings": []
}