Only the Mitogen unit tests will run against CentOS 5, providing atleast some
Python 2.4test coverage. There is no version of Ansible that supports Python
2.4 that is also supported by Mitogen 0.3.
The SSH key exchange argument is to persuade newer SSH clients to talk with
such an old SSH server.
See https://www.openssh.org/legacy.html
Ansible >= 12 (ansible-core >= 2.19) deprecates `stdout_callback=yaml`,
superceded by `callback_result_format=yaml`. There is a change in behaviour:
`callback_result_format` applies to output of both `ansible-playbook` _and_
`ansible`.
Tests that run `ansible` in a subprocess are now explicitly configured to use
json (even if they don't inspect that output yet) for more assert-able output
across all versions of Ansible.
Python 2.7 (distro package) and 3.6 (pyenv managed) jobs run on Ubuntu 22.04.
More recent Pythons (distro or Github provided) run on 24.04.
fixes#1256
Ansible tasks that run locally (e.g. `connection: local`, `delegate_to:
localhost`) must now specify their `ansible_python_interpreter`, typically as
`{{ ansible_playbook_python }}`; otherwise the system Python on the controller
(e.g. `/usr/bin/python`) is likely to be used and this is often outside the
version range supported by the Ansible verison under test. If this occurs then
the symptom is often a failure to import a builtin from
`ansible.module_utils.six.moves`, e.g.
```
fatal: [target-centos6-1]: FAILED! => changed=true
cmd:
- ansible
- -m
- shell
- -c
- local
- -a
- whoami
- -i
- /tmp/mitogen_ci_ansibled3llejls/hosts
- test-targets
delta: '0:00:02.076385'
end: '2025-04-17 17:27:02.561500'
msg: non-zero return code
rc: 8
start: '2025-04-17 17:27:00.485115'
stderr: |-
stderr_lines: <omitted>
stdout: |-
An exception occurred during task execution. To see the full traceback,
use -vvv. The error was: from ansible.module_utils.six.moves import
map, reduce, shlex_quote
```
To do so the test suite allows a weak cryptographic alogorithm (SHA1) to be
used, principally for CentOS 6 targets. This can be removed if/when support
for older (legacy) targets is dropped.
Only the test suite enables this known weak alogorithm. Mitogen as-shipped
doesn't enable or disable algorithms.
Alex Willmer