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одна из сетей на машине с 2 интерфейсами больше недоступна

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одна из сетей на машине с 2 интерфейсами больше недоступна

У меня есть машина Centos с двумя сетевыми интерфейсами для подсетей 162.* и 172.*. Машина работала нормально, но на сегодняшний день сеть 172.* больше недоступна. Я понятия не имею, что изменилось, какая была конфигурация раньше. Ниже приведен вывод ifconfig, ip route и ip link, а также содержимое файлов интерфейса в /etc/sysconfig/network-scripts

ifconfig -a
eno16777984: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 162.70.42.93  netmask 255.255.255.0  broadcast 162.70.42.255
        ether 00:50:56:ba:b0:83  txqueuelen 1000  (Ethernet)
        RX packets 1935793  bytes 195710508 (186.6 MiB)
        RX errors 0  dropped 16501  overruns 0  frame 0
        TX packets 638906  bytes 47382225 (45.1 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eno33557248: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::250:56ff:feba:6875  prefixlen 64  scopeid 0x20<link>
        ether 00:50:56:ba:68:75  txqueuelen 1000  (Ethernet)
        RX packets 147161  bytes 8837081 (8.4 MiB)
        RX errors 0  dropped 639  overruns 0  frame 0
        TX packets 8098  bytes 1436275 (1.3 MiB)
        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
        loop  txqueuelen 0  (Local Loopback)
        RX packets 318746  bytes 17084987 (16.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 318746  bytes 17084987 (16.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


ip route
default via 162.70.42.1 dev eno16777984  proto static  metric 100 
162.70.42.0/24 dev eno16777984  proto kernel  scope link  src 162.70.42.93  metric 100

ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eno16777984: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT qlen 1000
    link/ether 00:50:56:ba:b0:83 brd ff:ff:ff:ff:ff:ff
3: eno33557248: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT qlen 1000
    link/ether 00:50:56:ba:68:75 brd ff:ff:ff:ff:ff:ff


/etc/sysconfig/network-scripts/ifcfg-eno33557248:
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE=no
IPV4_FAILURE_FATAL=yes
IPV6INIT="no"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME=eno33557248
UUID="e157d343-3acb-4498-8ab2-83251bf5e098"
ONBOOT="yes"
HWADDR=00:50:56:BA:68:75
IPADDR=172.16.3.2
PREFIX=24
GATEWAY=172.16.3.1

/etc/sysconfig/network-scripts/ ifcfg-eno16777984:
TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="no"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
NAME="eno16777984"
UUID="e157d343-3acb-4498-8ab2-83251bf5e098"
ONBOOT="yes"
HWADDR="00:50:56:BA:B0:83"
DNS1="162.70.113.10"
DNS2="162.70.113.11"
IPADDR=162.70.42.93
PREFIX=24
GATEWAY=162.70.42.1
ZONE=public

ifconfig eno33557248 вниз

Feb 16 17:01:46 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): link disconnected
Feb 16 17:01:46 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: disconnected -> unavailable (reason 'carrier-changed') [30 20 40]

ifconfig eno33557248 вверх

eb 16 17:01:54 sassy-admin-uat kernel: vmxnet3 0000:0b:00.0 eno33557248: intr type 3, mode 0, 5 vectors allocated
Feb 16 17:01:54 sassy-admin-uat kernel: vmxnet3 0000:0b:00.0 eno33557248: NIC Link is Up 10000 Mbps
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): link connected
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: unavailable -> disconnected (reason 'carrier-changed') [20 30 40]
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  Auto-activating connection 'Wired connection 1'.
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): Activation: starting connection 'Wired connection 1' (529d729a-48e0-4ecb-94d0-07dc43dca703)
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: prepare -> config (reason 'none') [40 50 0]
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: config -> ip-config (reason 'none') [50 70 0]
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  Activation (eno33557248) Beginning DHCPv4 transaction (timeout in 45 seconds)
Feb 16 17:01:54 sassy-admin-uat NetworkManager[692]: <info>  dhclient started with pid 12676
Feb 16 17:01:54 sassy-admin-uat dhclient[12676]: DHCPDISCOVER on eno33557248 to 255.255.255.255 port 67 interval 5 (xid=0x74c85128)
Feb 16 17:01:56 sassy-admin-uat avahi-daemon[621]: Registering new address record for fe80::250:56ff:feba:6875 on eno33557248.*.
Feb 16 17:01:59 sassy-admin-uat dhclient[12676]: DHCPDISCOVER on eno33557248 to 255.255.255.255 port 67 interval 5 (xid=0x74c85128)
Feb 16 17:02:04 sassy-admin-uat dhclient[12676]: DHCPDISCOVER on eno33557248 to 255.255.255.255 port 67 interval 13 (xid=0x74c85128)
Feb 16 17:02:17 sassy-admin-uat dhclient[12676]: DHCPDISCOVER on eno33557248 to 255.255.255.255 port 67 interval 17 (xid=0x74c85128)
Feb 16 17:02:34 sassy-admin-uat dhclient[12676]: DHCPDISCOVER on eno33557248 to 255.255.255.255 port 67 interval 17 (xid=0x74c85128)
Feb 16 17:02:40 sassy-admin-uat NetworkManager[692]: <warn>  (eno33557248): DHCPv4 request timed out.
Feb 16 17:02:40 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): DHCPv4 state changed unknown -> timeout
Feb 16 17:02:40 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): canceled DHCP transaction, DHCP client pid 12676
Feb 16 17:02:40 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): DHCPv4 state changed timeout -> done
Feb 16 17:02:40 sassy-admin-uat NetworkManager[692]: <info>  (eno33557248): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]

решение1

Я не вижу этого адреса IPv4 (inet) в выводе вашей команды ifconfig. Похоже, что ваш интерфейс eno33557248 имеет только адрес IPv6 (inet6).

eno16777984: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 162.70.42.93  netmask 255.255.255.0  broadcast 162.70.42.255
        ether 00:50:56:ba:b0:83  txqueuelen 1000  (Ethernet)

eno33557248: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500 .
        inet6 fe80::250:56ff:feba:6875  prefixlen 64  scopeid 0x20<link>
        ether 00:50:56:ba:68:75  txqueuelen 1000  (Ethernet)

Если вы используете статическую адресацию, а не DHCP, посмотрите на свой ipcfg (может быть /etc/sysconfig/network-scripts/ipcfg-eno33557248), чтобы убедиться, что адрес настроен. Затем "ifconfig eno33557248 down" и "ifconfig eno33557248 up" должны вернуть его.

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