added infrastructure article

content/infrastructure.rst

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+infrastructure
+##############
+
+:date: 2019-08-07 00:00
+:modified: 2019-08-07 00:00
+:tags: infra
+:category: documentation
+:slug: infrastructure
+:authors: Ms.Leave-A-Mix
+:summary: Description of the currently used infrastructure
+
+The Freepoteries server is up and running since january 2018. The software,
+hardware, and the network setup have changed in time, this page will describe
+the history of this infrastructure.
+
+----
+2018
+----
+
+I began with a Debian stretch as the host OS, libvirt as the virtual machine
+supervisor, LXC as the containers supervisor. LXC was handling the network, and
+all of my storage volume were managed by LVM. SystemD was the PID 1, and I had
+to learn how to manage a server with it.
+
+This setup lasted for about 1 year, and I managed to work with it but after
+this, I felt that, to progress in my administrating skills, to migrate to a
+lighter setup. This led me to a huge step in my computing.
+
+
+----
+2019
+----
+
+This is my current setup :
+
+  :Host OS: Gentoo
+  :Hypervisor: libVirt
+  :Partitioning: LVM
+  :PID 1: OpenRC
+  :Virtual Machines:
+    - DAV service (baïkal)
+    - DBMS (mariadb)
+    - DNS (unbound)
+    - Music stream (icecast)
+    - Mail management (modoboa)
+    - Mail server (postfix+dovecot)
+    - Music stream (mpd)
+    - Monitoring Service (munin)
+    - Picture hosting (piwigo)
+    - Reverse Proxy (nginx)
+    - Websites (nginx)
+    - YunoHost multi-services
+
+The libvirtd daemon is almost the only process that runs directly on the host.
+
+This "pstree" is pretty self-explanatory :
+
+::
+
+    f00 ~ # pstree -T -l
+    init─┬─6*[agetty]
+         ├─console-kit-dae
+         ├─dbus-daemon
+         ├─dnsmasq
+         ├─fail2ban-server
+         ├─fcron
+         ├─libvirtd
+         ├─lvmetad
+         ├─munin-node
+         ├─named
+         ├─ntpd
+         ├─nullmailer-send
+         ├─polkitd
+         ├─15*[qemu-system-x86]
+         ├─screen───bash───pstree
+         ├─syslog-ng
+         ├─systemd-udevd
+         ├─virtlockd
+         └─virtlogd