# mother, machine physique (leparc)

## Matériel

Carte mère : 1 × Asus KGPN-D16 Rev 1.03G  
CPU : 2 × AMD Opteron 6282SE  
RAM : 7 × Crucial RDIMM 16Go CT2K16G3ERSLD4160B  
Alimentation : 1 ×  Antec NE700G ZEN EC  
Casier : 1 × Inter-Tech IPC 4U-4129-N SSI-EEB (Rack)  
Stockage de masse : 2 × KINGSTON SEDC500M1920G 2 To  

## 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 : `192.168.1.2`  
Adresse ipv4 interne DRBD : `192.168.254.2`  
Adresse ipv6 publique : `2001:910:1021::2`  

### Configuration réseau

#### /etc/network/interfaces
<details>

    auto lo br0
    iface lo inet loopback

    # The primary network interface
    allow-hotplug ens10
    allow-hotplug ens9
    allow-hotplug ens13f0
    allow-hotplug ens13f1

    # aunt
    iface ens13f1 inet static
            address 192.168.254.2

    post-up /usr/bin/ip link set ens13f1 mtu 9000

    # bridge for vm
    iface br0 inet static
        bridge_ports ens13f0
        address 192.168.1.2
        gateway 192.168.0.1
        broadcast 192.168.255.255
        netmask 255.255.0.0

    iface br0 inet6 static
            bridge_ports ens13f0
            address 2001:910:1021:0::2/128
            gateway 2001:910:1021::1
                
</details>

## Configuration SSH

### /etc/ssh/sshd_config
<details>

    Port 222
    AddressFamily any
    ListenAddress 0.0.0.0
    ListenAddress ::

    PubkeyAuthentication yes

    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 User admin666 Address *,!127.0.0.1,!::1
	    DenyUsers admin666

</details>

## Configuration DRBD

### /etc/drbd.d/drbd1.res
<details>

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

     startup {
      become-primary-on both;
     }
     net {
      verify-alg sha256;
      allow-two-primaries yes;
      after-sb-0pri discard-zero-changes;
      after-sb-1pri discard-secondary;
      protocol C;
      ko-count 0;
      timeout 119;
      ping-int 120;
      connect-int 120;
      max-buffers 36k;
      sndbuf-size 0;
      rcvbuf-size 0;
     }
     handlers {
      pri-lost-after-sb "killall virt-backup";
     }
     disk {
      on-io-error pass_on;
      md-flushes;
      c-fill-target 10M;
      c-max-rate   700M;
      c-plan-ahead    0;
      c-min-rate     4M;
      resync-rate 500M;
     }

     on mother {                            # hostname must match `uname -n` output
      disk /dev/md1;                        # Logical Volume on the provided host
      address 192.168.254.2:7789;           # 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 192.168.254.3:7789;           # IP Address to be used to connect to the node with port
     }

    }

</details>

### /etc/ocfs2/cluster.conf
<details>

    cluster:
        name = sharedfs
        heartbeat_mode = local
        node_count = 2

    node:
        cluster = sharedfs
        number = 0
        ip_port = 7777
        ip_address = 192.168.254.3
        name = aunt

    node:
        cluster = sharedfs
        number = 1
        ip_port = 7777
        ip_address = 192.168.254.2
        name = mother

</details>

## 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