Non-critical systems are those that are managed by the infrastructure
consider whether a central MySQL service should be used
Many containers contain their own instance of MySQL. It might be a better
idea to centralize the MySQL setups in a single container.
A shareable MariaDB instance is available on MariaDB.
consider whether a central PostgreSQL service should be used
A shareable PostgreSQL instance is available on PostgreSQL.
setup a central syslog service and install syslog clients in each container
All containers should be monitored by Monitor and should
therefore have icinga2 installed and managed via Puppet (older
systems without Puppet have nagios-nrpe-server installed)
All containers should use etckeeper to put their local setup into
version control. All local setup should use
/etc to make sure it is
handled by etckeeper
All infrastructure systems must send their mail via Emailout
All infrastructure systems should have an firstname.lastname@example.org alias to
reach their admins
document how to setup the system-admin alias on the email system