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Interfaces
Capturé le 2026-07-28 depuis un CE de ce déploiement. sitecli/capture-manifest.json
indique quel nœud, et scripts/capture-sitecli.sh --check revérifie la surface de
commandes sur un CE actif.
Ces éléments rapportent la vue du noyau. Le plan de données Argo conserve la sienne, visible via
vif, et les deux peuvent divergere.
Prend une sous-commande ip. addr est la plus courante ; route, link et neigh fonctionnent
également.
{"command":["ip","addr"]}1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever2: a-i-eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 60:45:bd:eb:38:ea brd ff:ff:ff:ff:ff:ff inet 10.0.2.4/26 brd 10.0.2.63 scope global noprefixroute eth1 valid_lft forever preferred_lft forever4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 60:45:bd:eb:3d:f3 brd ff:ff:ff:ff:ff:ff inet 10.0.3.4/26 brd 10.0.3.63 scope global noprefixroute eth2 valid_lft forever preferred_lft forever inet6 fe80::55af:2cd4:23a1:7e06/64 scope link noprefixroute valid_lft forever preferred_lft forever5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default link/ether 62:61:2b:33:cd:42 brd ff:ff:ff:ff:ff:ff inet 100.64.255.1/29 brd 100.64.255.7 scope global docker0 valid_lft forever preferred_lft forever10: tap_eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc multiq state UNKNOWN group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff11: vhost0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff inet 10.0.1.4/26 brd 10.0.1.63 scope global noprefixroute vhost0 valid_lft forever preferred_lft forever13: vethfrr0@if12: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 02:01:02:03:04:05 brd ff:ff:ff:ff:ff:ff link-netns frrns15: argo-envoy-0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1520 qdisc noqueue state UP group default qlen 1000 link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns envoy-ns17: host-envoy-0@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether ee:95:ea:b5:8c:2a brd ff:ff:ff:ff:ff:ff link-netns envoy-ns inet 169.254.100.1/30 scope global host-envoy-0 valid_lft forever preferred_lft forever18: xc-br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether aa:db:2f:e1:15:2c brd ff:ff:ff:ff:ff:ff19: argo-end@xc-br0-end: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 76:e0:23:f6:48:8b brd ff:ff:ff:ff:ff:ff20: xc-br0-end@argo-end: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master xc-br0 state UP group default qlen 1000 link/ether aa:db:2f:e1:15:2c brd ff:ff:ff:ff:ff:ff22: linkquality0@if21: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 590 qdisc noqueue state UP group default link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns ns-link-quality24: vethbfd0@if23: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns bfdns25: keepalived-tap: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000 link/ether 32:1d:e4:ae:46:0e brd ff:ff:ff:ff:ff:ff inet 169.254.10.13/30 brd 169.254.10.15 scope global keepalived-tap valid_lft forever preferred_lft forever27: vethdnsmasq0@if26: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 02:01:02:03:04:07 brd ff:ff:ff:ff:ff:ff link-netnsid 4 inet 169.254.254.103/32 brd 169.254.255.255 scope global vethdnsmasq0 valid_lft forever preferred_lft foreverLe CE possède trois cartes réseau Azure par conception — gestion/SLO, externe, interne/SLI — mais le système invité ne les présente pas de la manière que cet ordre suggère, et c’est là qu’une mauvaise lecture de la sortie coûte du temps.
| Dans le système invité | Porte |
|---|---|
a-i-eth0 | aucune adresse — il s’agit de l’eth0 physique renommé, et le plan de données Argo en est propriétaire |
vhost0 | l’adresse de gestion/SLO, celle depuis laquelle les pairs BGP s’appairent et celle que rapporte l’objet site |
eth1 et eth2 | les adresses externe et interne/SLI — mais pas dans un ordre fixe |
Le fait que a-i-eth0 ne porte aucune adresse est aussi toute la raison pour laquelle sshd est
injoignable sur l’adresse de gestion : il n’y a aucun processus en écoute à cet endroit, il ne s’agit
pas d’un port bloqué. Voir SSH.
ip-link-show
Section intitulée « ip-link-show »Couche liaison uniquement : état, MTU, discipline de mise en file d’attente, MAC.
{"command":["ip-link-show"]}1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:002: a-i-eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 60:45:bd:eb:38:ea brd ff:ff:ff:ff:ff:ff4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 60:45:bd:eb:3d:f3 brd ff:ff:ff:ff:ff:ff5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default link/ether 62:61:2b:33:cd:42 brd ff:ff:ff:ff:ff:ff10: tap_eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc multiq state UNKNOWN mode DEFAULT group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff11: vhost0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000 link/ether 60:45:bd:eb:3f:f2 brd ff:ff:ff:ff:ff:ff13: vethfrr0@if12: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 02:01:02:03:04:05 brd ff:ff:ff:ff:ff:ff link-netns frrns15: argo-envoy-0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1520 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns envoy-ns17: host-envoy-0@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether ee:95:ea:b5:8c:2a brd ff:ff:ff:ff:ff:ff link-netns envoy-ns18: xc-br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether aa:db:2f:e1:15:2c brd ff:ff:ff:ff:ff:ff19: argo-end@xc-br0-end: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 76:e0:23:f6:48:8b brd ff:ff:ff:ff:ff:ff20: xc-br0-end@argo-end: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master xc-br0 state UP mode DEFAULT group default qlen 1000 link/ether aa:db:2f:e1:15:2c brd ff:ff:ff:ff:ff:ff22: linkquality0@if21: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 590 qdisc noqueue state UP mode DEFAULT group default link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns ns-link-quality24: vethbfd0@if23: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 00:00:5e:00:01:00 brd ff:ff:ff:ff:ff:ff link-netns bfdns25: keepalived-tap: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000 link/ether 32:1d:e4:ae:46:0e brd ff:ff:ff:ff:ff:ff27: vethdnsmasq0@if26: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000 link/ether 02:01:02:03:04:07 brd ff:ff:ff:ff:ff:ff link-netnsid 4Plus rapide que ip addr lorsque la question est « le lien est-il actif et quel est son MTU ».
Les incohérences de MTU sont une cause récurrente de tunnels qui s’établissent mais ne transmettent
aucun trafic.
ip-link-set Niveau Exec — mutatif
Section intitulée « ip-link-set »Active ou désactive une interface ou un groupe.
ip-link-set (<device>||<group>) (up||down)