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Serveur physique mother : serveur-mère de l'infrastructure de Libre en Communs

mother est un serveur physique hébergé au local de l'association.

Avec aunt elles forment le centre névralgique de l'infrastructure de l'association.

Matériel

Carte mère : 1 × Asus KGPN-D16 Rev 1.03G
CPU : 2 × AMD Opteron 6282SE
RAM : 4 × Crucial RDIMM 16Go CT2K16G3ERSLD4160B
Alimentation : 1 × FSP Twins PRO 500W (500W ATX12V / EPS12V 80PLUS Gold)
Onduleur : 1 × EATON Ellipse PRO 1600 VA
Casier : 1 × Inter-Tech IPC 4U-4129-N SSI-EEB (Rack)
Stockage de masse : 2 × Samsung SSD 870 QVO 2To

Logiciel

Micro-programme : Coreboot 4.6 + SeaBIOS, sans blob privateur
Système d'exploitation : Debian GNU/Linux-libre 11 (Bullseye)
Noyau : Linux-libre LTS (linux-libre-lts des dépôts https://linux-libre.fsfla.org)
Virtualisation : QEMU/KVM (libvirt)
Gestion du onduleur : NUT/UPS
Audit des paquets mensuel : vrms
Sécurités de la maintenance : etckeeper, mollyguard, tig, lm-sensors, fancontrol, screen
Mail Transfer Agent : postfix
Réplication de stockage (vm) : drbd, ocfs2

Caractéristiques notables

Domaine : mother.libre-en-communs.org
Adresse ipv4 publique : 80.67.176.33
Adresse ipv4 locale : 192.168.1.108
Adresse ipv6 publique : 2001:910:1021::2

Configuration réseau

/etc/network/interfaces
# Connexion avec la machine aunt
allow-hotplug ens9
iface ens9 inet static
        address 192.169.254.2

post-up /usr/bin/ip link set ens9 mtu 9000

# Connexion avec le routeur (bridge sur ens10 avec les VM présentes)
allow-hotplug ens10
auto br0
iface br0 inet dhcp
        bridge_ports ens10

iface br0 inet6 static
        bridge_ports ens10
        address 2001:910:1021::2/128
        gateway 2001:910:1021::1
        bridge_stp off       # désactivation du Spanning Tree Protocol
        bridge_waitport 0    # suppression du délai avant que le port soit disponible pour le bridge
        bridge_fd 0          # suppression de délai avant que le forwarding du bridge soit établi

Configuration SSH

/etc/ssh/sshd_config

#	$OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options override the
# default value.

Port 222
AddressFamily any
ListenAddress 0.0.0.0
ListenAddress ::

PubkeyAuthentication no

PasswordAuthentication no
PermitEmptyPasswords no

ChallengeResponseAuthentication no

UsePAM yes

AllowAgentForwarding yes
AllowTcpForwarding yes
GatewayPorts yes
X11Forwarding no

PrintMotd no

TCPKeepAlive yes

PermitTunnel yes

AcceptEnv LANG LC_* GIT_*

Subsystem	sftp	/usr/lib/openssh/sftp-server

Match Group ssh-pubkey
    PubkeyAuthentication yes

Match Group ssh-login
    PasswordAuthentication yes
    PubkeyAuthentication yes

Match Address 127.0.0.*
    PubkeyAuthentication yes  

Match Address 192.169.254.3
    PubkeyAuthentication yes

Configuration DRBD

/etc/drbd.d/drbd1.res

resource drbd1 {
    meta-disk internal;
    device /dev/drbd1;

    startup {
            wfc-timeout 20;
            become-primary-on both;
    }
    net {
            verify-alg sha256;
            allow-two-primaries yes;
            max-buffers 10k;
            max-epoch-size 10k;
            unplug-watermark 32;
            sndbuf-size 0;
            rcvbuf-size 0;
    }
    disk {
            on-io-error detach;
            #no-disk-flushes;
            #no-disk-barrier;
            c-plan-ahead 10;
            c-fill-target 150M;
            c-min-rate 10k;
            c-max-rate 500M;
    }

    on mother {                            # hostname must match `uname -n` output
            disk /dev/md1;                        # Logical Volume on the provided host
            address 192.169.254.2:7789;           # IP Address to be used to connect to the node with port
    }

    on aunt {                              # hostname must match `uname -n` output
            disk /dev/md1;                        # Logical Volume on the provided host
            address 192.169.254.3:7789;           # IP Address to be used to connect to the node with port
    }
}

/etc/ocfs2/cluster.conf

cluster:
    name = sharedfs
    heartbeat_mode = local
    node_count = 2

node:
    cluster = sharedfs
    number = 0
    ip_port = 7777
    ip_address = 192.169.254.3
    name = aunt

node:
    cluster = sharedfs
    number = 1
    ip_port = 7777
    ip_address = 192.169.254.2
    name = mother

Configuration MTA

/etc/postfix/transport

a-lec.org    :
*              discard:

/etc/postfix/virtual

@localhost admin@a-lec.org
@mother.libre-en-communs.org admin@a-lec.org