documentation/pm/aunt.md

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# aunt, machine physique (leparc)
## Matériel
Carte mère : 1 × Asus KGPN-D16 Rev 1.03G
CPU : 2 × AMD Opteron 6282SE
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RAM : 7 × Crucial RDIMM 16Go CT2K16G3ERSLD4160B
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Alimentation : HX750
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Casier : 1 × Inter-Tech IPC 4U-4129-N SSI-EEB (Rack)
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Stockage de masse : 2 × KINGSTON SEDC600M3840G 4 To
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## Logiciel
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Micro-programme : GNU Boot 0.1-rc3
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Système d'exploitation : Trisquel GNU/Linux-libre 11 Aramo
Noyau : Linux-libre
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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`
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Réplication de stockage (vm) : `drbd`, `ocfs2`, `o2cb`
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## Caractéristiques notables
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Domaine : `aunt.libre-en-communs.org`
Adresse ipv4 publique : `80.67.176.33`
Adresse ipv4 locale : `192.168.1.3`
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Adresse ipv4 directe DRBD : `192.168.254.3`
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Adresse ipv6 publique : `2001:910:1021::3`
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### Configuration réseau
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Les machines physiques sont configurées pour récupérer leur IP locale via
DHCP, le routeur du site embarquant un serveur DHCP.
Cette machine physique étant un hôte hyperviseur, elle partage sa connexion
ethernet avec les machines virtuelles qu'elle héberge, c'est pourquoi nous
configurons un pont.
De plus, nous configurons une connexion directe entre `mother` et `aunt`
pour la réplication `DRBD`.
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#### /etc/network/interfaces
<details>
# The loopback network interface
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auto lo br0
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iface lo inet loopback
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allow-hostplug ens9
allow-hostplug ens10
allow-hostplug ens13f0
allow-hostplug ens13f1
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# aunt
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iface ens13f1 inet static
address 192.168.254.3
post-up /usr/bin/ip link set ens13f1 mtu 9000
# bridge for vm
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iface br0 inet dhcp
bridge_ports ens13f0
iface br0 inet6 dhcp
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bridge_ports ens13f0
</details>
## Configuration SSH
### /etc/ssh/sshd_config
<details>
Port 223
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
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AcceptEnv LANG LC\_* GIT\_*
Subsystem sftp /usr/lib/openssh/sftp-server
Match User admin666 Address *,!192.168.0.0/16,!::1,!127.0.0.1,!127.0.1.1
DenyUsers admin666
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</details>
## Configuration DRBD
### /etc/drbd.d/drbd1.res
<details>
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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.libre-en-communs.org { # hostname must match `uname -n` output
disk /dev/md/1; # 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.libre-en-communs.org { # hostname must match `uname -n` output
disk /dev/md/1; # Logical Volume on the provided host
address 192.168.254.3:7789; # IP Address to be used to connect to the node with port
}
}
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</details>
### /etc/ocfs2/cluster.conf
<details>
cluster:
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name = vmverse
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heartbeat_mode = local
node_count = 2
node:
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cluster = vmverse
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number = 0
ip_port = 7777
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ip_address = 192.168.254.3
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name = aunt
node:
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cluster = vmverse
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number = 1
ip_port = 7777
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ip_address = 192.168.254.2
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name = mother
</details>
## Configuration MTA
### /etc/postfix/transport
a-lec.org :
* discard:
### /etc/postfix/virtual
@localhost admin@a-lec.org
@aunt.libre-en-communs.org admin@a-lec.org