WARNING: The following packages cannot be authenticated!

[stylersnico]

Hi,

The playbook fail on Debian 8.5 with the following error message:

WARNING: The following packages cannot be authenticated! :  percona-toolkit percona-xtrabackup xtrabackup

You need to launch a apt-get update in your playbook before trying to install these packages.

[stylersnico]

Also:

failed: [46.101.190.144] (item=4567/tcp) => {"failed": true, "item": "4567/tcp", "msg": "firewalld and its python 2 module are required for this module"}

[goldyfruit]

@stylersnico about the firewalld issue it's because you have set the galera_firewalld: true without having the firewalld package install on your system.

About the warning you are completely right !

[goldyfruit]

Update the README to give more information about firewalld: 4bf85fe
Make sure the GPG key is installed before update the repository: d7091c2