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.. index::
single: Systems; Infra03
=======
Infra03
=======
Purpose
=======
The infrastructure host system Infra03 is a dedicated physical machine for the
CAcert infrastructure.
.. index::
single: nftables
single: LXC
Infra03 is a host system for infrustructure :term:`containers <Container>`. The
containers are setup using the Linux kernel's :term:`LXC` system. The firewall
for the running containers is maintained using nftables_. The machine provides
a DNS resolver based on dnsmasq_ and gives answers for the internal zone
infra.cacert.org.
.. _nftables: https://wiki.nftables.org/
.. _dnsmasq: https://www.thekelleys.org.uk/dnsmasq/doc.html
.. todo::
implement synchronization between :doc:`infra02`'s dnsmasq and this system's
dnsmasq
Administration
==============
System Administration
---------------------
* Primary: :ref:`people_jandd`
* Secondary: :ref:`people_dirk`
Contact
-------
* infrastructure-admin@cacert.org
Basics
======
Physical Location
-----------------
The machine is located in a server rack at BIT B.V. in the Netherlands.
Physical Configuration
----------------------
The machine has the following hardware parameters:
:Mainboard: IBM System x3550 M2 49Y6512
:CPU: Intel(R) Xeon(R) CPU E5506 @ 2.13GHz (4 Cores, 4 Threads)
:RAM: 48 GiB (8 GB DDR3-1600 Registered ECC)
:Disks: 3 x 1TB Seagate Constellation 2 SATA ST91000640NS
:NIC:
* eno1 Broadcom Limited NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
* eno2 Broadcom Limited NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
.. seealso::
See :wiki:`SystemAdministration/EquipmentList`
Logical Location
----------------
:IP Internet: None yet
:IP Intranet: :ip:v4:`172.16.2.3`
:IP Internal: :ip:v4:`10.0.3.1`
:IPv6: :ip:v6:`2001:7b8:616:162:1::9`
:MAC address:
* :mac:`e4:1f:13:2e:67:86` (eno2)
* :mac:`fe:2c:b2:f9:c5:41` (br0)
.. seealso::
See :doc:`../network`
.. index::
single: Monitoring; Infra03
Monitoring
----------
:internal checks: :monitor:`infra03.infra.cacert.org`
:external checks: :monitor:`infra03.cacert.org`
DNS
---
.. index::
single: DNS records; Infra03
.. ========================== ======== ==========================================
.. Name Type Content
.. ========================== ======== ==========================================
.. ========================== ======== ==========================================
.. todo:: add DNS records for Infra03
.. seealso::
See :wiki:`SystemAdministration/Procedures/DNSChanges`
Operating System
----------------
.. index::
single: Debian GNU/Linux; Buster
single: Debian GNU/Linux; 10.9
* Debian GNU/Linux 10.9
Services
========
Listening services
------------------
+----------+---------+----------+-----------------------------------------+
| Port | Service | Origin | Purpose |
+==========+=========+==========+=========================================+
| 22/tcp | ssh | ANY | admin console access |
+----------+---------+----------+-----------------------------------------+
| 25/tcp | smtp | local | mail delivery to local MTA |
+----------+---------+----------+-----------------------------------------+
| 53/tcp | dns | internal | DNS resolver for infra.cacert.org |
| 53/udp | | | |
+----------+---------+----------+-----------------------------------------+
| 123/udp | ntp | ANY | network time protocol for host, |
| | | | listening on the Internet IPv6 and IPv4 |
| | | | addresses |
+----------+---------+----------+-----------------------------------------+
Running services
----------------
.. index::
single: cron
single: dbus
single: dm-event
single: dnsmasq
single: exim4
single: ntp
single: openssh
single: puppet
single: rsyslog
single: smartd
+----------------+---------------------------------------+----------------------------------+
| Service | Usage | Start mechanism |
+================+=======================================+==================================+
| cron | job scheduler | systemd unit ``cron.service`` |
+----------------+---------------------------------------+----------------------------------+
| dbus-daemon | System message bus | systemd unit ``dbus.service`` |
+----------------+---------------------------------------+----------------------------------+
| Exim | SMTP server for local mail submission | systemd unit ``exim4.service`` |
+----------------+---------------------------------------+----------------------------------+
| openssh server | ssh daemon for remote administration | systemd unit ``ssh.service`` |
+----------------+---------------------------------------+----------------------------------+
| Puppet agent | configuration management agent | systemd unit ``puppet.service`` |
+----------------+---------------------------------------+----------------------------------+
| rsyslog | syslog daemon | systemd unit ``rsyslog.service`` |
+----------------+---------------------------------------+----------------------------------+
.. todo:: add Icinga 2 system monitoring
.. Running Guests
--------------
.. some directive to list guests here
Connected Systems
-----------------
.. * :doc:`monitor`
None yet
Outbound network connections
----------------------------
* DNS (53) resolving nameservers 172.16.2.2 and 172.16.2.3
* :doc:`emailout` as SMTP relay
* :doc:`puppet` (tcp/8140) as Puppet master
.. * :doc:`proxyout` as HTTP proxy for APT
.. * crl.cacert.org (rsync) for getting CRLs
.. todo:: use proxyout for outgoing http/https traffic
Security
========
.. sshkeys::
:RSA: SHA256:zdFI2N/R/yT5n+KbeQh+qXJ3p/bjp+A8BOyTeN+Eh3g MD5:bb:00:36:35:8c:02:97:7d:1b:c4:25:77:60:e6:ec:19
:ECDSA: SHA256:In12bkuY6JktIOpsBw5By89ip6ovWhi4Er8GaQzsbrI MD5:1b:32:4d:f3:83:28:04:ac:cf:4f:a9:48:80:b2:2b:0b
:ED25519: SHA256:m2CBwhLqO47H5iiEoS7YK7mAgoXLeIEjmEdhzNImTPQ MD5:e8:c5:9c:ce:f3:5f:52:98:78:c8:5e:88:b6:e2:3c:37
Dedicated user roles
--------------------
* None
Non-distribution packages and modifications
-------------------------------------------
* None
Risk assessments on critical packages
-------------------------------------
The system is the host system for other infrastructure systems. Access to this
system has to be tightly controlled.
The Puppet agent package and a few dependencies are installed from the official
Puppet APT repository because the versions in Debian are too old to use modern
Puppet features.
Critical Configuration items
============================
The system configuration is managed via Puppet profiles. There should be no
configuration items outside of the :cacertgit:`cacert-puppet`.
Tasks
=====
Adding a new container
----------------------
.. todo::
describe how to add a new container, setup nftables rules, routing,
proxying, outgoing mail and monitoring
Changes
=======
Planned
-------
* Setup Icinga2 monitoring
* Setup containers for MariaDB, Nextcloud, Taiga.io and other services
Additional documentation
========================
.. seealso::
* :wiki:`Exim4Configuration`
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