Improve glossary entry for LXC
[cacert-infradocs.git] / docs / glossary.rst
1 Glossary
2 ========
4 .. glossary::
5 :sorted:
8 LXC is a userspace interface to the Linux kernel containment features.
9 See `The LXC introduction
10 <>`_ on the Linux containers
11 website for more information
13 Container
14 A container is an isolated system with a separate root file system and
15 operating system userland. The containers share a common operating system
16 kernel.
18 LVM
19 Logical volume manager. The LVM allows to allocate space on block
20 devices more dynamically than with traditional partitions. The block
21 devices are managed as physical volumes (PVs) that are grouped in volume
22 groups (VGs). Space can be allocated as logical volumes (LVs) that can be
23 formatted using regular file system tools. LVs can be resized without
24 reboot. LVM provides snapshot functionality that is useful for backup and
25 upgrade procedures.
27 Infrastructure Team Lead
28 This person is appointed to coordinate the non-critical infrastructure
29 team by a board motion. The Infrastructure Team Lead works with
30 :term:`Infrastructure Administrators <Infrastructure Administrator>` and
31 the :term:`Critical System Administrators <Critical System
32 Administrator>`.
34 Infrastructure Administrator
35 Infrastructure Administrators have :program:`sudo` access to one or
36 multiple infrastructure systems. Most of them are :term:`Application
37 Administrators <Application Administrator>` too.
39 Critical System Administrator
40 The Critical System Administrators take care of the critical systems
41 required for the CA and RA operation, they have access to the Internet
42 firewall and DNS setup.
44 Application Administrator
45 An Application Administrator takes care of the functionality of one or
46 more server applications. Application Administrators do not necessarily
47 need system level access if the managed application has other means of
48 administration, for example a web based administration frontend.