Comment définir une passerelle par défaut dans Ubuntu Server 18.04 avec NetPlan
J'ai une seule interface réseau sur ce serveur nommé ENP2S0 Cette interface avait une adresse statique 192.168.2.xxx avec passerelle 192.168.2.1 Maintenant, j'ai modifié l'adresse statique dans le fichier YAML en 192.168.1.xxx et la passerelle également en 192.168.1.1. Mais chaque fois que je redémarre le serveur, la passerelle par défaut revient à 192.168.2.1 J'ai essayé de lancer l'itinéraire Commmand pour supprimer la passerelle par défaut et définir le nouveau mais si je redémarre le serveur, il revient à 192.168.2.1
This is the yaml config file
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp2s0:
addresses: [192.168.1.10/24]
gateway4: 192.168.1.1
nameservers:
addresses: [1.1.1.1,1.0.0.1]
Sortie de l'état NetworkCtL ENP2S0 après le redémarrage
2: enp2s0
Link File: /lib/systemd/network/99-default.link
Network File: /run/systemd/network/10-netplan-enp2s0.network
Type: ether
State: routable (configured)
Path: pci-0000:02:00.0
Driver: r8169
Vendor: Realtek Semiconductor Co., Ltd.
Model: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (M4A
HW Address: 48:5b:39:02:41:c9 (ASUSTek COMPUTER INC.)
Address: 192.168.1.10
192.168.2.100
fe80::4a5b:39ff:fe02:41c9
Gateway: 192.168.2.1
DNS: 1.1.1.1
1.0.0.1
Sortie de la commande de route après le redémarrage
Tabella di routing IP del kernel
Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.2.1 0.0.0.0 UG 202 0 0 enp2s0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 enp2s0
192.168.2.0 0.0.0.0 255.255.255.0 U 202 0 0 enp2s0
Résultat du statut NetworkCtL ENP2S0 après une passerelle par défaut restaurée à 192.168.1.1
2: enp2s0
Link File: /lib/systemd/network/99-default.link
Network File: /run/systemd/network/10-netplan-enp2s0.network
Type: ether
State: routable (configured)
Path: pci-0000:02:00.0
Driver: r8169
Vendor: Realtek Semiconductor Co., Ltd.
Model: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (M4A
HW Address: 48:5b:39:02:41:c9 (ASUSTek COMPUTER INC.)
Address: 192.168.1.10
fe80::4a5b:39ff:fe02:41c9
Gateway: 192.168.1.1
DNS: 1.1.1.1
1.0.0.1
Sortie de la commande de route après une passerelle par défaut restaurée à 192.168.1.1
Tabella di routing IP del kernel
Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 enp2s0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 enp2s0
Ceci est la sortie de la commande NetPlan --Debug Appliquer
** (generate:4965): DEBUG: 16:17:35.743: Processing input file /etc/netplan/01-netcfg.yaml..
** (generate:4965): DEBUG: 16:17:35.744: starting new processing pass
** (generate:4965): DEBUG: 16:17:35.744: Processing input file /etc/netplan/lo.yaml..
** (generate:4965): DEBUG: 16:17:35.744: starting new processing pass
** (generate:4965): DEBUG: 16:17:35.744: enp2s0: setting default backend to 1
** (generate:4965): DEBUG: 16:17:35.744: Configuration is valid
** (generate:4965): DEBUG: 16:17:35.744: lo: setting default backend to 1
** (generate:4965): DEBUG: 16:17:35.744: Configuration is valid
** (generate:4965): DEBUG: 16:17:35.744: Generating output files..
** (generate:4965): DEBUG: 16:17:35.744: NetworkManager: definition enp2s0 is not for us (backend 1)
** (generate:4965): DEBUG: 16:17:35.744: NetworkManager: definition lo is not for us (backend 1)
DEBUG:netplan generated networkd configuration changed, restarting networkd
DEBUG:no netplan generated NM configuration exists
DEBUG:enp2s0 not found in {}
DEBUG:lo not found in {'enp2s0': {'addresses': ['192.168.1.10/24'], 'gateway4': '192.168.1.1', 'nameservers': {'addresses': ['1.1.1.1', '1.0.0.1']}}}
DEBUG:Merged config:
network:
bonds: {}
bridges: {}
ethernets:
enp2s0:
addresses:
- 192.168.1.10/24
gateway4: 192.168.1.1
nameservers:
addresses:
- 1.1.1.1
- 1.0.0.1
lo:
addresses:
- 127.0.0.1/8
vlans: {}
wifis: {}
DEBUG:device lo operstate is unknown, not changing
DEBUG:device enp2s0 operstate is up, not changing
DEBUG:{}
DEBUG:netplan triggering .link rules for lo
DEBUG:netplan triggering .link rules for enp2s0
@heynnema
root@ubuntu:~# cat /etc/network/interfaces
# ifupdown has been replaced by netplan(5) on this system. See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
# Sudo apt install ifupdown
root@ubuntu:~# cat /etc/netplan/*.yaml
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp2s0:
addresses: [192.168.1.10/24]
gateway4: 192.168.1.1
nameservers:
addresses: [1.1.1.1,1.0.0.1]
network:
ethernets:
lo:
addresses: ['127.0.0.1/8']
Comment résoudre ?
Change ton /etc/network/interfaces à...
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
Supprimer /etc/netplan/lo.yaml.
Change ton /etc/netplan/01-netcfg.yaml Fichier ... et soyez conscient de l'indentation spécifique et assurez aucun onglets ...
de:
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp2s0:
addresses: [192.168.1.10/24]
gateway4: 192.168.1.1
nameservers:
addresses: [1.1.1.1,1.0.0.1]
network:
ethernets:
lo:
addresses: ['127.0.0.1/8']
à:
# This file describes the network interfaces available on your system
# For more information, see netplan(5).
network:
version: 2
renderer: networkd
ethernets:
enp2s0:
addresses: [192.168.1.10/24]
gateway4: 192.168.1.1
nameservers:
addresses: [1.1.1.1, 1.0.0.1]
Sudo netplan --debug generate # générer des fichiers de configuration
Sudo netplan apply # appliquer une nouvelle configuration
reboot # Redémarrage obligatoire