f86e02459b4b64863bae8a91043e63ff7dfd7f44
[cacert-infradocs.git] / docs / systems.rst
1 ====================
2 Non-Critical Systems
3 ====================
4
5 Non-critical systems are those that are managed by the infrastructure
6 administrator team.
7
8 .. toctree::
9 :maxdepth: 1
10
11 systems/infra02
12 systems/blog
13 systems/board
14 systems/bugs
15 systems/cats
16 systems/email
17 systems/emailout
18 systems/git
19 systems/irc
20 systems/ircserver
21 systems/issue
22 systems/monitor
23 systems/puppet
24 systems/proxyin
25 systems/proxyout
26 systems/svn
27 systems/webmail
28
29
30 General
31 =======
32
33 .. todo:: consider whether a central MySQL service should be setup
34
35 Many containers contain their own instance of MySQL. It might be a better
36 idea to centralize the MySQL setups in a single container.
37
38 .. todo:: consider whether a central PostgreSQL service should be setup
39
40 .. todo::
41
42 setup a central syslog service and install syslog clients in each container
43
44 .. _setup_apt_checking:
45
46 .. topic:: Setup package update monitoring for a new container
47
48 For Icinga to be able to check the update status of packages on you server
49 you need to install NRPE, a helper service. Install the necessary packages::
50
51 sudo aptitude install nagios-plugins-basic nagios-nrpe-server
52
53 Put :doc:`systems/monitor` on the list of allowed hosts to access the NRPE
54 service by adding the following line to :file:`/etc/nagios/nrpe_local.cfg`::
55
56 allowed_hosts=172.16.2.18
57
58 Tell the NRPE service that there is such a thing as the check_apt command by
59 creating the file :file:`/etc/nagios/nrpe.d/apt.cfg` with the following
60 contents::
61
62 # 'check_apt' command definition
63 command[check_apt]=/usr/lib/nagios/plugins/check_apt
64
65 # 'check_apt_distupgrade' command definition
66 command[check_apt_distupgrade]=/usr/lib/nagios/plugins/check_apt -d
67
68 Restart the NRPE service::
69
70 sudo service nagios-nrpe-server restart
71
72 Check that everything went well by going to https://monitor.cacert.org/,
73 going to the APT service on the host and clicking :guilabel:`"Re-schedule
74 the next check of this service"`. Make sure that :guilabel:`"Force Check"`
75 is checked and click :guilabel:`"Commit"`. Now you should see a page with a
76 green background. If not something went wrong, please contact the
77 :doc:`systems/monitor` administrators with the details.
78
79 That's it, now the package update status should be properly displayed in
80 Icinga.
81
82 .. todo:: think about replacing nrpe with Icinga2 satellites
83
84 Checklist
85 =========
86
87 .. index::
88 single: etckeeper
89 single: nrpe
90
91 * All containers should be monitored by :doc:`systems/monitor` and should
92 therefore have :program:`nagios-nrpe-server` installed
93 * All containers should use :program:`etckeeper` to put their local setup into
94 version control. All local setup should use :file:`/etc` to make sure it is
95 handled by :program:`etckeeper`
96 * All infrastructure systems must send their mail via :doc:`systems/emailout`
97 * All infrastructure systems should have an system-admin@cacert.org alias to
98 reach their admins
99 * The installation of :index:`systemd-sysv` in containers can be blocked by
100 putting the following lines in :file:`/etc/apt/preferences.d/systemd-sysv`::
101
102 Package: systemd-sysv
103 Pin: release a=stable
104 Pin-Priority: -1
105
106 .. todo:: document how to setup the system-admin alias on the email system