[SOLVED] VLAN not working on one node

[alh]

Hi, we hire several root servers at Hetzner and we cannot configure VLAN on one node only all the other nodes work fine.

VLAN is configured like this:

iface enp7s0.4001 inet manual

All nodes run the latest version of Proxmox, at the time of writing this is

Linux srv1 5.15.35-1-pve #1 SMP PVE 5.15.35-3 (Wed, 11 May 2022 07:57:51 +0200) x86_64 GNU/Linux

When trying to bring up the VLAN interface we receive the following error:

root@srv1:~# ifup -v enp7s0.4001
info: requesting link dump
info: requesting address dump
info: requesting netconf dump
info: loading builtin modules from ['/usr/share/ifupdown2/addons']
info: module openvswitch not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module openvswitch_port not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module ppp not loaded (module init failed: no /usr/bin/pon found)
info: module batman_adv not loaded (module init failed: no /usr/sbin/batctl found)
info: executing /sbin/sysctl net.bridge.bridge-allow-multiple-vlans
info: module mstpctl not loaded (module init failed: no /sbin/mstpctl found)
info: executing /bin/ip rule show
info: executing /bin/ip -6 rule show
info: module ethtool not loaded (module init failed: /sbin/ethtool: not found)
info: address: using default mtu 1500
info: address: max_mtu undefined
info: executing /usr/sbin/ip vrf id
info: mgmt vrf_context = False
info: dhclient: dhclient_retry_on_failure set to 0
info: executing /bin/ip addr help
info: address metric support: OK
info: module ethtool not loaded (module init failed: /sbin/ethtool: not found)
info: module ppp not loaded (module init failed: no /usr/bin/pon found)
info: module mstpctl not loaded (module init failed: no /sbin/mstpctl found)
info: module batman_adv not loaded (module init failed: no /usr/sbin/batctl found)
info: module openvswitch_port not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: module openvswitch not loaded (module init failed: no /usr/bin/ovs-vsctl found)
info: looking for user scripts under /etc/network
info: loading scripts under /etc/network/if-pre-up.d ...
info: loading scripts under /etc/network/if-up.d ...
info: loading scripts under /etc/network/if-post-up.d ...
info: loading scripts under /etc/network/if-pre-down.d ...
info: loading scripts under /etc/network/if-down.d ...
info: loading scripts under /etc/network/if-post-down.d ...
info: using mgmt iface default prefix eth
info: processing interfaces file /etc/network/interfaces
info: enp7s0.4001: running ops ...
info: enp7s0.4001: netlink: ip link add link enp7s0 name enp7s0.4001 type vlan id 4001 protocol 802.1q bridge_binding off
info: executing /sbin/sysctl net.mpls.conf.enp7s0/4001.input=0
info: enp7s0.4001: netlink: ip link set dev enp7s0.4001 up
info: executing /etc/network/if-up.d/chrony
info: executing /etc/network/if-up.d/postfix
info: running upperifaces (parent interfaces) if available ..
info: exit status 0

 

[spirit]

I don't see any error in your logs. enp7s0.4001 seem to be up.

do you allow vlan 4001 on your physical switch ?

 

[alh]

Yes, VLAN is allowed. After a lot of reboots the interface finally came up. No idea what happened. Thanks for your input though.