Compatibility with ansible 2.8 (missing ansible facts)

[hogarthj]

We run automated weekly tests of all our roles against preview and nightly builds of ansible.

Any yum interaction with a combination of mitogen 0.2.5 and the ansible 2.8 nightly results in:

TASK [ansible_role_yum : configure packages] **********************************************************************************************************************************************************************
failed: [initial] (item={u'name': u'yum-utils'}) => {"changed": false, "item": {"name": "yum-utils"}, "msg": ["Could not detect which major revision of yum is in use, which is required to determine module backend.", "You can manually specify use_backend to tell the module whether to use the yum (yum3) or dnf (yum4) backend})"]}
failed: [initial] (item={u'name': u'yum-plugin-priorities'}) => {"changed": false, "item": {"name": "yum-plugin-priorities"}, "msg": ["Could not detect which major revision of yum is in use, which is required to determine module backend.", "You can manually specify use_backend to tell the module whether to use the yum (yum3) or dnf (yum4) backend})"]}

This happens within a docker container and also with a remote host as the target.

I have traced this back to facts not being populated correctly. These are present with ANSIBLE_STRATEGY set to linear but missing when ANSIBLE_STRATEGY is set to mitogen_linear.

        "ansible_distribution": "CentOS", 
        "ansible_distribution_file_parsed": true, 
        "ansible_distribution_file_path": "/etc/redhat-release", 
        "ansible_distribution_file_variety": "RedHat", 
        "ansible_distribution_major_version": "7", 
        "ansible_distribution_release": "Core", 
        "ansible_distribution_version": "7", 

This results in, when following the code, eventually the error laid out above since the selection of yum backend is dependent on the distribution being detected correctly.

 ansible-config dump --only-changed
ANSIBLE_FORCE_COLOR(env: ANSIBLE_FORCE_COLOR) = True
DEFAULT_CALLBACK_WHITELIST(env: ANSIBLE_CALLBACK_WHITELIST) = [u'junit']
DEFAULT_HOST_LIST(/srv/ansible/ansible_role_yum/ansible.cfg) = [u'/srv/ansible/ansible_role_yum/tests/inventory']
DEFAULT_ROLES_PATH(/srv/ansible/ansible_role_yum/ansible.cfg) = [u'/srv/ansible/ansible_role_yum/tests/roles']
DEFAULT_STRATEGY(env: ANSIBLE_STRATEGY) = mitogen_linear
DEFAULT_STRATEGY_PLUGIN_PATH(env: ANSIBLE_STRATEGY_PLUGINS) = [u'/root/.ansible/plugins/strategy', u'/usr/share/ansible/plugins/strategy', u'/srv/ansible/mitogen/ansible_mitogen/plugins/strategy']
DEFAULT_TIMEOUT(env: ANSIBLE_TIMEOUT) = 30
HOST_KEY_CHECKING(env: ANSIBLE_HOST_KEY_CHECKING) = False
RETRY_FILES_ENABLED(env: ANSIBLE_RETRY_FILES_ENABLED) = False

ansible --version
ansible 2.8.0.dev0
  config file = /srv/ansible/ansible_role_yum/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.5 (default, Oct 30 2018, 23:45:53) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)]

This can be trivially replicated by using a centos container that has ansible 2.8 with mitogen installed:

docker run --rm -it centos bash
yum -y install epel-release
yum-config-manager --add-url=https://releases.ansible.com/ansible/rpm/nightly/devel/epel-7-x86_64/
yum install ansible
# <add mitogen to the system>
ansible -c local -i localhost, -m setup all # this is missing the facts
ANSIBLE_STRATEGY=linear ansible -c local -i localhost, -m setup # this has the distribution facts

[dw]

Thanks for reporting this -- it is likely there is more breakage, I haven't tried against latest devel yet.

They have also landed become plugins, and that requires a good chunk of dev work to catch up with

[dw]

This is now on the master branch and will make it into the next release. To be updated when a new release is made, subscribe to https://networkgenomics.com/mail/mitogen-announce/

Thanks for reporting this!