No package matching 'redhat_pkg' found

[rgarrigue]

I guess it's about Ansible 2 compatibility, here's the -vvvv

TASK [bennojoy.nginx : Install the nginx packages] *****************************
task path: /etc/ansible/roles/bennojoy.nginx/tasks/main.yml:11
Using module file /usr/lib/python2.7/dist-packages/ansible/modules/core/packaging/os/yum.py
<pradvitop01> ESTABLISH SSH CONNECTION FOR USER: root
<pradvitop01> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=root -o ConnectTimeout=10 -o ControlPath=/home/remy/.ansible/cp/ansible-ssh-%h-%p-%r pradvitop01 '/bin/sh -c '"'"'( umask 77 && mkdir -p "` echo ~/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762 `" && echo ansible-tmp-1486381215.15-154476418521762="` echo ~/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762 `" ) && sleep 0'"'"''
<pradvitop01> PUT /tmp/tmpey8r0w TO /root/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762/yum.py
<pradvitop01> SSH: EXEC sftp -b - -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=root -o ConnectTimeout=10 -o ControlPath=/home/remy/.ansible/cp/ansible-ssh-%h-%p-%r '[pradvitop01]'
<pradvitop01> ESTABLISH SSH CONNECTION FOR USER: root
<pradvitop01> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=root -o ConnectTimeout=10 -o ControlPath=/home/remy/.ansible/cp/ansible-ssh-%h-%p-%r pradvitop01 '/bin/sh -c '"'"'chmod u+x /root/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762/ /root/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762/yum.py && sleep 0'"'"''
<pradvitop01> ESTABLISH SSH CONNECTION FOR USER: root
<pradvitop01> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=root -o ConnectTimeout=10 -o ControlPath=/home/remy/.ansible/cp/ansible-ssh-%h-%p-%r -tt pradvitop01 '/bin/sh -c '"'"'/usr/bin/python /root/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762/yum.py; rm -rf "/root/.ansible/tmp/ansible-tmp-1486381215.15-154476418521762/" > /dev/null 2>&1 && sleep 0'"'"''
failed: [pradvitop01] (item=[u'redhat_pkg']) => {
    "changed": false, 
    "failed": true, 
    "invocation": {
        "module_args": {
            "conf_file": null, 
            "disable_gpg_check": false, 
            "disablerepo": null, 
            "enablerepo": null, 
            "exclude": null, 
            "install_repoquery": true, 
            "list": null, 
            "name": [
                "redhat_pkg"
            ], 
            "state": "present", 
            "update_cache": false, 
            "validate_certs": true
        }, 
        "module_name": "yum"
    }, 
    "item": [
        "redhat_pkg"
    ], 
    "msg": "No package matching 'redhat_pkg' found available, installed or updated", 
    "rc": 126, 
    "results": [
        "No package matching 'redhat_pkg' found available, installed or updated"
    ]
}

[rosstimson]

FYI This should just need the variables in the task to put in braces, something like:

- name: Install the nginx packages 
  yum: name={{ item }} state=present
  with_items: "{{ redhat_pkg }}"
  when: ansible_os_family == "RedHat"