Centos

VXLAN介面消失

  • March 9, 2022

我有一個帶有連接到網橋的 VXLAN 介面的 CentOS 7 伺服器。伺服器正在使用網路服務。未安裝網路管理器。此/sbin/ifup-local腳本在網橋啟動後設置 VXLAN 介面。

#!/bin/bash

# Set up VXLAN once cloudbr0 is available.
if [[ "$1" == "cloudbr0" ]]
then
 ip link add vxlan100 type vxlan id 100 dstport 4789 group "240.10.11.1" dev "eth0"
 brctl addif cloudbr0 vxlan100
 ip link set up dev vxlan100
fi

它工作了一段時間，然後VXLAN介面消失了。我需要幫助找出原因並修復。我在/var/log/messages.

Mar  7 18:20:37 cloudstack-worker-4 kernel: brvxlan100-100: port 2(vnet0) entered disabled state
Mar  7 18:20:37 cloudstack-worker-4 kernel: device vnet0 left promiscuous mode
Mar  7 18:20:37 cloudstack-worker-4 kernel: brvxlan100-100: port 2(vnet0) entered disabled state
Mar  7 18:20:37 cloudstack-worker-4 libvirtd: 2022-03-07 18:20:37.544+0000: 85757: error : qemuMonitorIO:718 : internal error: End of file from qemu monitor
Mar  7 18:20:37 cloudstack-worker-4 kvm: 0 guests now active
Mar  7 18:20:37 cloudstack-worker-4 systemd-machined: Machine qemu-5-i-2-34-VM terminated.
Mar  7 18:20:38 cloudstack-worker-4 java: libvirt: QEMU Driver error : Domain not found: no domain with matching uuid '32a413eb-7d54-4b63-bcea-4354c9649db9' (i-2-34-VM)
Mar  7 18:20:38 cloudstack-worker-4 java: WARN  [kvm.resource.LibvirtKvmAgentHook] (agentRequest-Handler-5:) (logid:e71a1258) Groovy script '/etc/cloudstack/agent/hooks/libvirt-vm-state-change.groovy' is not available. Transformations will not be applied.
Mar  7 18:20:38 cloudstack-worker-4 java: WARN  [kvm.resource.LibvirtKvmAgentHook] (agentRequest-Handler-5:) (logid:e71a1258) Groovy scripting engine is not initialized. Data transformation skipped.
Mar  7 18:20:38 cloudstack-worker-4 kernel: cloudbr0: port 2(vxlan100) entered disabled state
Mar  7 18:20:38 cloudstack-worker-4 kernel: device vxlan100 left promiscuous mode
Mar  7 18:20:38 cloudstack-worker-4 kernel: brvxlan100-100: port 1(vxlan100.100) entered disabled state
Mar  7 18:20:38 cloudstack-worker-4 kernel: brvxlan100-100: port 1(vxlan100.100) entered disabled state
Mar  7 18:20:39 cloudstack-worker-4 ntpd[83942]: Deleting interface #23 brvxlan100-100, fe80::4890:56ff:fe85:3cb3#123, interface stats: received=0, sent=0, dropped=0, active_time=571 secs
Mar  7 18:20:39 cloudstack-worker-4 ntpd[83942]: Deleting interface #22 vnet0, fe80::fc00:6bff:fe5b:1#123, interface stats: received=0, sent=0, dropped=0, active_time=571 secs
Mar  7 18:20:39 cloudstack-worker-4 ntpd[83942]: Deleting interface #21 vxlan100.100, fe80::8c5:cff:fec1:2025#123, interface stats: received=0, sent=0, dropped=0, active_time=571 secs
Mar  7 18:20:39 cloudstack-worker-4 ntpd[83942]: Deleting interface #14 vxlan100.179, fe80::8c5:cff:fec1:2025#123, interface stats: received=0, sent=0, dropped=0, active_time=1274 secs
Mar  7 18:20:39 cloudstack-worker-4 ntpd[83942]: Deleting interface #7 vxlan100, fe80::8c5:cff:fec1:2025#123, interface stats: received=0, sent=0, dropped=0, active_time=264643 secs
Mar  7 18:36:08 cloudstack-worker-4 java: INFO  [cloud.agent.Agent] (Agent-Handler-2:) (logid:6fdfda4a) Lost connection to host: 10.11.0.2. Attempting reconnection while we still have 0 commands in progress.
Mar  7 18:36:08 cloudstack-worker-4 java: INFO  [utils.nio.NioClient] (Agent-Handler-2:) (logid:6fdfda4a) NioClient connection closed
Mar  7 18:36:08 cloudstack-worker-4 java: INFO  [cloud.agent.Agent] (Agent-Handler-2:) (logid:6fdfda4a) Reconnecting to host:10.11.0.2
Mar  7 18:36:08 cloudstack-worker-4 java: INFO  [utils.nio.NioClient] (Agent-Handler-2:) (logid:6fdfda4a) Connecting to 10.11.0.2:8250
Mar  7 18:36:11 cloudstack-worker-4 java: ERROR [utils.nio.NioConnection] (Agent-Handler-2:) (logid:6fdfda4a) Unable to initialize the threads.
Mar  7 18:36:11 cloudstack-worker-4 java: java.net.NoRouteToHostException: No route to host

執行systemctl status network顯示網路服務正常執行時間長（比界面消失後的時間長很多）。 systemctl restart network成功地使失去的界面重新存在。然後過了一段時間，界面又消失了。

知道為什麼界面消失了嗎？其他介面繼續工作。有沒有更可靠的方式來配置介面？

更新 1

ip link界面消失後的輸出：

[centos@cloudstack-worker-3 ~]$ ip link
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 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP mode DEFAULT group default qlen 1000
   link/ether 0e:e1:87:a2:92:db brd ff:ff:ff:ff:ff:ff
3: ethdummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue master cloudbr0 state UNKNOWN mode DEFAULT group default qlen 1000
   link/ether 8a:9d:8a:91:9c:6e brd ff:ff:ff:ff:ff:ff
8: cloud0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
23: cloudbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
   link/ether 8a:9d:8a:91:9c:6e brd ff:ff:ff:ff:ff:ff

ip linkafter的輸出systemctl restart network使界面返回：

[root@cloudstack-worker-3 centos]# ip a
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 forever
   inet6 ::1/128 scope host
      valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 qdisc mq state UP group default qlen 1000
   link/ether 0e:e1:87:a2:92:db brd ff:ff:ff:ff:ff:ff
   inet 10.10.67.48/18 brd 10.10.127.255 scope global dynamic eth0
      valid_lft 2361sec preferred_lft 2361sec
   inet6 fe80::ce1:87ff:fea2:92db/64 scope link
      valid_lft forever preferred_lft forever
3: ethdummy0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue master cloudbr0 state UNKNOWN group default qlen 1000
   link/ether 8a:9d:8a:91:9c:6e brd ff:ff:ff:ff:ff:ff
8: cloud0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
   inet 169.254.0.1/16 scope global cloud0
      valid_lft forever preferred_lft forever
   inet6 fe80::248d:90ff:fe51:1fa1/64 scope link
      valid_lft forever preferred_lft forever
23: cloudbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
   inet 10.11.0.13/16 brd 10.11.255.255 scope global cloudbr0
      valid_lft forever preferred_lft forever
   inet6 fe80::889d:8aff:fe91:9c6e/64 scope link
      valid_lft forever preferred_lft forever
30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master cloudbr0 state UNKNOWN group default qlen 1000
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
   inet6 fe80::68bb:e5ff:fecb:8ab1/64 scope link
      valid_lft forever preferred_lft forever

更新 2

我跑ip -ts monitor link了一會兒，界面消失的時候周圍有很多活動。（/var/log/messages顯示 ntpd 在 17:20:21 檢測到已刪除的介面。）

[root@cloudstack-worker-3 centos]# ip -ts monitor link
[2022-03-08T17:12:06.165185] 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master cloudbr0 state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.165394] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST> mtu 8951 qdisc noop state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.165812] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.167814] 32: brvxlan100-100: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether ea:26:7d:91:78:ff brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.168344] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether ea:26:7d:91:78:ff brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.170981] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master brvxlan100-100 state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.171376] 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master cloudbr0 state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.171414] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master brvxlan100-100 state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.171459] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether ea:26:7d:91:78:ff brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.172330] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UP
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:12:06.172339] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UP
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:12:06.172345] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UP
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:12:06.172372] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.172421] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.209537] 33: vnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether 02:4f:a5:47:6e:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.209863] 33: vnet0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.209874] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 qdisc noop state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.210667] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 qdisc noop master brvxlan100-100 state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.211017] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 qdisc noop master brvxlan100-100 state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.211096] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.211113] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 master brvxlan100-100 state DOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:12:06.211176] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc pfifo_fast master brvxlan100-100 state UNKNOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.212034] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UNKNOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:12:06.212066] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UNKNOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:12:06.212073] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UNKNOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:12:06.234242] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether 36:3d:41:4e:01:07 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.234316] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.235157] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master cloud0 state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.235509] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master cloud0 state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.235551] 8: cloud0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.235559] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 master cloud0 state DOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:12:06.235603] 8: cloud0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.235685] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master cloud0 state UNKNOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.236450] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloud0 state UNKNOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:12:06.236458] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloud0 state UNKNOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:12:06.236464] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloud0 state UNKNOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:12:06.236759] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether ee:73:d0:55:96:b8 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.236818] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.237680] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master cloudbr0 state DOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.238113] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master cloudbr0 state DOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.238121] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 master cloudbr0 state DOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:12:06.238205] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master cloudbr0 state UNKNOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.238997] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloudbr0 state UNKNOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:12:06.239008] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloudbr0 state UNKNOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:12:06.239013] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloudbr0 state UNKNOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:12:06.239128] 8: cloud0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342461] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc htb master brvxlan100-100 state UNKNOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342563] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342624] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc htb master brvxlan100-100 state UNKNOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342660] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342893] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master cloud0 state UNKNOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.342959] 8: cloud0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.343006] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master cloud0 state UNKNOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.343042] 8: cloud0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.343255] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master cloudbr0 state UNKNOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:06.343314] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master cloudbr0 state UNKNOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:07.166770] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:09.839987] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc htb master brvxlan100-100 state UNKNOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:09.840016] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:09.848776] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master cloud0 state UNKNOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:09.848821] 8: cloud0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:09.852466] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb master cloudbr0 state UNKNOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:12:11.254594] 35: vnet2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloudbr0 state UNKNOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:12:21.174674] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UP
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:12:21.238653] 34: vnet1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master cloud0 state UNKNOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:12:21.239591] 33: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master brvxlan100-100 state UNKNOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:20:19.215787] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 qdisc htb master brvxlan100-100 state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.216347] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 master brvxlan100-100 state DOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:20:19.216361] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 master brvxlan100-100 state DOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:20:19.218506] 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 master brvxlan100-100 state DOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:20:19.218518] Deleted 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 master brvxlan100-100 state DOWN
   link/ether fe:00:61:80:00:02
[2022-03-08T17:20:19.223039] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.223210] Deleted 33: vnet0: <BROADCAST,MULTICAST> mtu 8951 qdisc noop state DOWN group default
   link/ether fe:00:61:80:00:02 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.238916] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master cloud0 state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.239404] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 master cloud0 state DOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:20:19.239450] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 master cloud0 state DOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:20:19.241524] 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 master cloud0 state DOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:20:19.241606] Deleted 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 master cloud0 state DOWN
   link/ether fe:00:a9:fe:1f:0a
[2022-03-08T17:20:19.248933] 8: cloud0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.249089] 8: cloud0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.249240] Deleted 34: vnet1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether fe:00:a9:fe:1f:0a brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.260921] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc htb master cloudbr0 state DOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:19.261455] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 master cloudbr0 state DOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:20:19.261469] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 master cloudbr0 state DOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:20:19.263556] 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 master cloudbr0 state DOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:20:19.263585] Deleted 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 master cloudbr0 state DOWN
   link/ether fe:00:ed:00:01:c9
[2022-03-08T17:20:19.268967] Deleted 35: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether fe:00:ed:00:01:c9 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.226898] 8: cloud0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.310747] 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue master cloudbr0 state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.311100] 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master cloudbr0 state UNKNOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.311112] Deleted 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 master cloudbr0 state UNKNOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.317679] 30: vxlan100: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 8951 qdisc noqueue state UNKNOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.317793] 23: cloudbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 8a:9d:8a:91:9c:6e brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.317844] 23: cloudbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 8a:9d:8a:91:9c:6e brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.318482] 30: vxlan100: <BROADCAST,MULTICAST> mtu 8951 qdisc noqueue state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.320254] 30: vxlan100: <BROADCAST,MULTICAST> mtu 8951 qdisc noqueue state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.320311] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 qdisc noqueue master brvxlan100-100 state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.320843] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 master brvxlan100-100 state DOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.320852] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 master brvxlan100-100 state DOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.322764] 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 master brvxlan100-100 state DOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.322784] Deleted 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 master brvxlan100-100 state DOWN
   link/ether 6a:bb:e5:cb:8a:b1
[2022-03-08T17:20:20.331412] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.331502] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.331546] 32: brvxlan100-100: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state UP group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.331561] Deleted 31: vxlan100.100@vxlan100: <BROADCAST,MULTICAST,ALLMULTI,PROMISC,M-DOWN> mtu 8951 qdisc noop state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.332299] Deleted 30: vxlan100: <BROADCAST,MULTICAST> mtu 8951 qdisc noop state DOWN group default
   link/ether 6a:bb:e5:cb:8a:b1 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.347065] 32: brvxlan100-100: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
[2022-03-08T17:20:20.356653] Deleted 32: brvxlan100-100: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
   link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff

當伺服器空閒時，我從未見過這個問題。我還注意到/var/log/messagesvxlan100 介面總是在 CloudStack 關閉 VM 並刪除相關網路介面的同時被刪除。知道 CloudStack 有時在介面名稱上使用模式匹配，我將介面從 vxlan100 重命名為 ethvxlan0。從那以後一直很穩定。

當 CloudStack 將其 API 綁定到網路介面時，它只使用名稱與 eth*、bond*、team*、vlan*、em*、pp、ens*、eno*、enp* 或 enx 匹配的介面*。我想知道它是否有一個清理常式，可以刪除所有與這些模式之一不匹配的介面？

CloudStack 日誌中從未出現過 vxlan100 這個名稱。我沒有證據證明這是一個 CloudStack 錯誤，但這是我目前最好的猜測。

引用自：https://unix.stackexchange.com/questions/693357

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