get content from URL header

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1

Hi,

I need to get the content (md5 checksum) from the header of a url. This could be done with:

`

but ansible throws a warning to use uri instead but I´ve tried different combinations like:

`

but it doesn´t work.

`
TASK [create_wordpress : Check MD5 sum of https://wordpress.org/latest.tar.gz] ********************
fatal: [ansible]: FAILED! => {“failed”: true, “msg”: “the field ‘args’ has an invalid value, which appears to include a variable that is undefined. The error was: ‘md5sum_wordpress’ is undefined\n\nThe error appears to have been in ‘/root/ansible/lxd-containers/roles/create_wordpress/tasks/main.yml’: line 3, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n# tasks file for wordpress\n- name: Check MD5 sum of https://wordpress.org/latest.tar.gz\n ^ here\n”}

`

Can you guys give me a hand :wink: Thanks

Cheers,

C.

2

I need to get the content (md5 checksum) from the header of a url. This
could be done with:

- name: Get md5sum from https://wordpress.org/latest.tar.gz header
   shell: curl --silent --head https://wordpress.org/latest.tar.gz | grep
MD5 | awk '{print$2}'
   register: md5sum_wordpress

- name: Download WordPress
     get_url:
         url: https://wordpress.org/latest.tar.gz
         checksum: md5:"{{ md5sum_wordpress.stdout }}"
         dest: /tmp/wordpress.tar.gz
         validate_certs: yes

but ansible throws a warning to use uri instead but I´ve tried different
combinations like:

The reason you are getting a warning(it actually only a tip) is that Ansible sees that your are using curl in the shell module, and comes with a suggestion to use uri.

You don't have to. You could add "warn: false" on the shell task or turn off this type on warning in ansible.cfg.

- name: Check MD5 sum of https://wordpress.org/latest.tar.gz
   uri:
     url: https://wordpress.org/latest.tar.gz
     method: HEAD
     return_content: yes
     headers:
       Content-MD5:"{{ md5sum_wordpress }}"

To do is the "Ansible way" it should be something like this

   - name: Check MD5 sum of https://wordpress.org/latest.tar.gz
     uri:
       url: https://wordpress.org/latest.tar.gz
       method: HEAD
     register: result

   - name: Download WordPress
     get_url:
       url: https://wordpress.org/latest.tar.gz
       checksum: md5:{{ result.content_md5 }}
       dest: /tmp/wordpress.tar.gz
       validate_certs: yes

3

You´re a genius! Thank you