Description of problem:

In a context when Ceph-Ansible is executed first by Mistral and then by Config-Download without a Mistral workflow, the later fails due to permission denied on the originally fetch director tarball.

See the following extract

############
TASK [attempt download of fetch directory tarball from swift backup] ***************************************************************************************************************************************************
[WARNING]: Consider using the get_url or uri module rather than running 'curl'.  If you need to use command because get_url or uri is insufficient you can add 'warn: false' to this command task or set
'command_warnings=False' in ansible.cfg to get rid of this message.

fatal: [undercloud]: FAILED! => {"changed": true, "cmd": "curl -s -o /tmp/temporary_dir_old.tar.gz -w '%{http_code}' -X GET \"https://192.168.111.2:13808/v1/AUTH_459a22f0d4d44957a587c514db597ff6/edge0-compute_ceph_ansible_fetch_dir/temporary_dir.tar.gz?temp_url_sig=357745cf28f026deb6c36f5cb94065bce6ed4f40&temp_url_expires=1573201513\"", "delta": "0:00:00.066594", "end": "2019-11-07 03:35:48.000145", "msg": "non-zero return code", "rc": 23, "start": "2019-11-07 03:35:47.933551", "stderr": "", "stderr_lines": [], "stdout": "200", "stdout_lines": ["200"]}
...ignoring

TASK [ensure we create a new fetch_directory or use the old fetch_directory] *******************************************************************************************************************************************
skipping: [undercloud]

TASK [unpack downloaded ceph-ansible fetch tarball to fetch directory] *************************************************************************************************************************************************
fatal: [undercloud]: FAILED! => {"changed": true, "cmd": "/usr/bin/gtar --gzip --extract --file /tmp/temporary_dir_old.tar.gz -C /home/stack/config-download/ceph-ansible/fetch_dir", "delta": "0:00:00.009019", "end": "2019-11-07 03:35:48.462157", "msg": "non-zero return code", "rc": 2, "start": "2019-11-07 03:35:48.453138", "stderr": "\ngzip: stdin: not in gzip format\n/usr/bin/gtar: Child returned status 1\n/usr/bin/gtar: Error is not recoverable: exiting now", "stderr_lines": ["", "gzip: stdin: not in gzip format", "/usr/bin/gtar: Child returned status 1", "/usr/bin/gtar: Error is not recoverable: exiting now"], "stdout": "", "stdout_lines": []}
############

As per the above log, CURL returns exit status 23 which stands for “Write error. Curl couldn't write data to a local filesystem or similar.”


Version-Release number of selected component (if applicable):
OSP15

How reproducible:
 - Deploy an OSP15 executing config-download by Mistral
 - Re-run Config Download using straight Ansible [1]

[1] https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/deployment/ansible_config_download.html#manual-config-download