Estou tendo um problema com pontes no servidor ubuntu 18.04. Esta máquina tem dois NICs, e eu estou ligando a ponte a um deles, e conectando contêineres à ponte. Estou configurando serviços para o lan nos contêineres e usando IPs estáticos por meio da ponte para torná-los disponíveis para a sub-rede. No entanto, quando inicializo o sistema, não acabo recebendo um endereço IP na bridge:
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::7e8b:caff:fe03:57b0 prefixlen 64 scopeid 0x20<link>
ether 7c:8b:ca:03:57:b0 txqueuelen 1000 (Ethernet)
RX packets 167 bytes 19385 (19.3 KB)
RX errors 0 dropped 50 overruns 0 frame 0
TX packets 36 bytes 2946 (2.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::7e8b:caff:fe03:57b0 prefixlen 64 scopeid 0x20<link>
ether 7c:8b:ca:03:57:b0 txqueuelen 1000 (Ethernet)
RX packets 758 bytes 637232 (637.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 433 bytes 33998 (33.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 30:9c:23:41:a4:1b txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 64 bytes 5104 (5.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 64 bytes 5104 (5.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethCHVFR2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fcf7:29ff:fe05:734b prefixlen 64 scopeid 0x20<link>
ether fe:f7:29:05:73:4b txqueuelen 1000 (Ethernet)
RX packets 348 bytes 26797 (26.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 422 bytes 350547 (350.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethLPOSTU: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fcb3:33ff:fe5b:4bbb prefixlen 64 scopeid 0x20<link>
ether fe:b3:33:5b:4b:bb txqueuelen 1000 (Ethernet)
RX packets 49 bytes 4363 (4.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 172 bytes 279551 (279.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Aqui está o meu arquivo / etc / network / interfaces no host global:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto enp2s0
iface enp2s0 inet manual
auto enp3s0
iface enp3s0 inet manual
# address 192.168.5.19
# netmask 255.255.255.0
# gateway 192.168.5.1
# dns-nameserver 8.8.8.8
#
auto br0
iface br0 inet static
bridge_ports enp2s0
address 192.168.5.20
# network 192.168.5.0
netmask 255.255.255.0
broadcast 192.168.5.255
gateway 192.168.5.1
# bridge_fd 9
# bridge_hello 2
# bridge_maxage 12
bridge_stp off
dns-nameserver 8.8.8.8
dns-search XXX.network
O problema é que, quando eu emito uma "reinicialização da rede de serviços", acabo tendo todas as coisas juntas do jeito que deveria:
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.5.20 netmask 255.255.255.0 broadcast 192.168.5.255
inet6 fe80::7e8b:caff:fe03:57b0 prefixlen 64 scopeid 0x20<link>
ether 7c:8b:ca:03:57:b0 txqueuelen 1000 (Ethernet)
RX packets 122 bytes 12409 (12.4 KB)
RX errors 0 dropped 21 overruns 0 frame 0
TX packets 91 bytes 8072 (8.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether 7c:8b:ca:03:57:b0 txqueuelen 1000 (Ethernet)
RX packets 914 bytes 654161 (654.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 522 bytes 41870 (41.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp3s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 30:9c:23:41:a4:1b txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 64 bytes 5104 (5.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 64 bytes 5104 (5.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethCHVFR2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fcf7:29ff:fe05:734b prefixlen 64 scopeid 0x20<link>
ether fe:f7:29:05:73:4b txqueuelen 1000 (Ethernet)
RX packets 350 bytes 26933 (26.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 430 bytes 351218 (351.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethLPOSTU: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fcb3:33ff:fe5b:4bbb prefixlen 64 scopeid 0x20<link>
ether fe:b3:33:5b:4b:bb txqueuelen 1000 (Ethernet)
RX packets 54 bytes 4625 (4.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 180 bytes 280218 (280.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
e tudo começa a funcionar como deveria. Alguma idéia de onde eu deveria olhar para que a rede comece corretamente em vez de precisar ser repassada para que a configuração seja feita?
Obrigado!
Essa acabou sendo a interação entre ifupdown e netplan. Depois que eu configurei o netplan, o sistema surgiu como deveria. Suspeito que o problema ocorreu durante a inicialização, quando não foi possível atribuir um endereço à ponte, pois as partes principais do subsistema de rede ainda não estavam ativas. Eu expurgei o ifupdown e configurei o netplan e tudo começou a funcionar.
Obrigado @ chili555 por me apontar na direção certa.