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LXC is a userspace interface to the Linux kernel containment features.
See `The LXC introduction
<https://linuxcontainers.org/lxc/introduction/>`_ on the Linux containers
website for more information
A container is an isolated system with a separate root file system and
operating system userland. The containers share a common operating system
Logical volume manager. The LVM allows to allocate space on block
devices more dynamically than with traditional partitions. The block
devices are managed as physical volumes (PVs) that are grouped in volume
groups (VGs). Space can be allocated as logical volumes (LVs) that can be
formatted using regular file system tools. LVs can be resized without
reboot. LVM provides snapshot functionality that is useful for backup and
Infrastructure Team Lead
This person is appointed to coordinate the non-critical infrastructure
team by a board motion. The Infrastructure Team Lead works with
:term:`Infrastructure Administrators <Infrastructure Administrator>` and
the :term:`Critical System Administrators <Critical System
Infrastructure Administrators have :program:`sudo` access to one or
multiple infrastructure systems. Most of them are :term:`Application
Administrators <Application Administrator>` too.
Critical System Administrator
The Critical System Administrators take care of the critical systems
required for the CA and RA operation, they have access to the Internet
firewall and DNS setup.
An Application Administrator takes care of the functionality of one or
more server applications. Application Administrators do not necessarily
need system level access if the managed application has other means of
administration, for example a web based administration frontend.
Domain Key Identified Mail
A mechanism where legitimate mail for a domain is verifiable by a
signature in a mail header and a corresponding public key in a specific
:term:`DNS` record. Outgoing mail servers for the domain have to be
configured to add the necessary signature to mails for their domains.
Domain Name System
DNS maps names to other information, the most well known use case is
mapping human readable names to IP addresses, but their are more
applications for DNS like service discovery, storage of public keys and
other public information.