I've just received the following alert from root <root@deployment-logstash2.deployment-prep.eqiad.wmflabs>.
Puppet is failing to run on the "deployment-logstash2.deployment-prep.eqiad.wmflabs" instance in Wikimedia Cloud VPS. Working Puppet runs are needed to maintain instance security and logins. As long as Puppet continues to fail, this system is in danger of becoming unreachable. You are receiving this email because you are listed as member for the project that contains this instance. Please take steps to repair this instance or contact a Cloud VPS admin for assistance. For further support, visit #wikimedia-cloud on freenode or <https://wikitech.wikimedia.org>
I don't have any idea about Puppet nor if this has been already addressed, so filing a Task.
Regards.