Ansible variable with dot in name

Given the next variable outoput, we want to get the value for user_namespace.enable

- debug:
    msg: "{{ ansible_cmdline }}"

Give us:

"msg": {
    "BOOT_IMAGE": "/vmlinuz-...",
    "LANG": "...",
    "crashkernel": "...",
    "namespace.unpriv_enable": "...",
    "quiet": ...,
    "rd.lvm.lv": "...",
    "rhgb": ...,
    "ro": ...,
    "root": "...",
    "user_namespace.enable": "1"
}

To access it we need to do:

- debug:
    msg: "{{ ansible_cmdline['user_namespace.enable'] }}"

References:

¹ Stackoverflow solution
² Ansible Documentation

https://stackoverflow.com/questions/52371537/ansible-get-variable-with-dots-in-key ↩︎
https://docs.ansible.com/ansible/latest/reference_appendices/faq.html#ansible-supports-dot-notation-and-array-notation-for-variables-which-notation-should-i-use ↩︎

Ansible variable with dot in name

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