[root@ovn-elem ~]# LANG=C rpm -q python2-dnf
package python2-dnf is not installed
> Am 20.11.2018 um 15:04 schrieb Ondra Machacek <omach...@redhat.com>:
>
> What's your version of python2-dnf?
> base.update_cache was introduced in 2.1.0-1.
>
> On 11/20/18 11:25 AM, Oliver Riesener wrote:
>> Hi,
>> i found an permanent updates avail on centos 7.5 host with ovirt
>> 4.2.7.5-1-el7 and ansible 2.7.1+.
>> Background: ansible 2.7.1+ "auto use" the yum: backend.
>> The new avail backend and auto selected backend "yum 4" uses "dnf" and didn't
>> recognize the attribute "update_cache: yes" in yum: ansible task.
>> #### Solution:
>> * switch backend to old yum style.
>> # diff
>> /usr/share/ovirt-engine/playbooks/roles/ovirt-host-upgrade/tasks/main.yml.orig
>> /usr/share/ovirt-engine/playbooks/roles/ovirt-host-upgrade/tasks/main.yml
>> 11a12
>> > use_backend: yum
>> * on ovirt node the file and the problem didn't exists.
>> best regards.
>> TASK [ovirt-host-upgrade : Install ovirt-host package if it isn't installed]
>> ******************************************************************************************************************
>> task path:
>> /usr/share/ovirt-engine/playbooks/roles/ovirt-host-upgrade/tasks/main.yml:8
>> fatal: [ovn-elem.example.org]: FAILED! => {"ansible_facts": {"pkg_mgr":
>> "dnf"}, "changed": false, "module_stderr": "Shared connection to
>> ovn-elem.example.org closed.\r\n", "module_stdout": "Traceback (most recent
>> call last):\r\n File
>> \"/root/.ansible/tmp/ansible-tmp-1542705098.43-115863495291729/AnsiballZ_dnf.py\",
>> line 113, in <module>\r\n _ansiballz_main()\r\n File
>> \"/root/.ansible/tmp/ansible-tmp-1542705098.43-115863495291729/AnsiballZ_dnf.py\",
>> line 105, in _ansiballz_main\r\n invoke_module(zipped_mod, temp_path,
>> ANSIBALLZ_PARAMS)\r\n File
>> \"/root/.ansible/tmp/ansible-tmp-1542705098.43-115863495291729/AnsiballZ_dnf.py\",
>> line 48, in invoke_module\r\n imp.load_module('__main__', mod, module,
>> MOD_DESC)\r\n File \"/tmp/ansible_dnf_payload_KN71mV/__main__.py\", line
>> 1079, in <module>\r\n File \"/tmp/ansible_dnf_payload_KN71mV/__main__.py\",
>> line 1068, in main\r\n File
>> \"/tmp/ansible_dnf_payload_KN71mV/__main__.py\", line 1044, in run\r\n File
>> \"/tmp/ansible_dnf_payload_KN71mV/__main__.py\", line 570, in
>> _base\r\nAttributeError: 'Base' object has no attribute 'update_cache'\r\n",
>> "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}
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>>
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