Hello,
I recently upgraded my pve 6 server (dedicated server RISE-1 at OVH), following this guide: https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#Check_Linux_Network_Bridge_MAC
The upgrade went fine, but after a reboot, the server did not answer to ping, SSH, HTTP, etc.
pve6to7 utility showed no errors.
As my system already used ifupdown2, as mentioned by the guide, I did not write the MAC addresses in the /etc/network/interfaces (but I wrote them down somewhere, just in case).
Here is the /etc/network/interfaces file prior to the upgrade:
After a reboot, and failure to get any network, I chrooted with a live distro and modified the file:
I retrieved MAC addresses using ip -c link. After another reboot: no success.
syslog showed this error:
So I chrooted again and commented out vmbr0 description in /etc/network/interfaces, then rebooted.
Now the only network related errors I see in the syslog are:
and other expected errors complaining that the system can not reach Debian NTP pools and my proxmox backup server, but I still cannot connect to my server.
I would gladly provide any other information needed, and try any workaround
I recently upgraded my pve 6 server (dedicated server RISE-1 at OVH), following this guide: https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#Check_Linux_Network_Bridge_MAC
The upgrade went fine, but after a reboot, the server did not answer to ping, SSH, HTTP, etc.
pve6to7 utility showed no errors.
As my system already used ifupdown2, as mentioned by the guide, I did not write the MAC addresses in the /etc/network/interfaces (but I wrote them down somewhere, just in case).
Here is the /etc/network/interfaces file prior to the upgrade:
Code:
auto lo
iface lo inet loopback
iface eno1 inet manual
iface eno2 inet manual
auto vmbr0 # this interface is used by some CTs and VMs which have a public IP
iface vmbr0 inet dhcp
bridge-ports eno1
bridge-stp off
bridge-fd 0
auto vmbr1 # this interface is used by all CTs and VMs
iface vmbr1 inet static
address 10.0.0.1/24
gateway X.X.X.X
bridge-ports none
bridge-stp off
bridge-fd 0After a reboot, and failure to get any network, I chrooted with a live distro and modified the file:
Code:
auto lo
iface lo inet loopback
iface eno1 inet manual
hwaddress a4:bf:01:2d:ad:68
iface eno2 inet manual
hwaddress a4:bf:01:2d:ad:69
auto vmbr0
iface vmbr0 inet dhcp
hwaddress a4:bf:01:2d:ad:68
bridge-ports eno1
bridge-stp off
bridge-fd 0
auto vmbr1
iface vmbr1 inet static
address 10.0.0.1/24
hwaddress ba:45:8b:04:c0:80
gateway X.X.X.X
bridge-ports none
bridge-stp off
bridge-fd 0syslog showed this error:
Code:
Oct 7 17:39:39 prox-01 networking[915]: error: vmbr0 : eno1 : (eno1: pre-up cmd '/etc/network/if-pre-up.d/static_ipv6' failed: returned 255 (Disabling IPv6 autoconfiguration for eno1
Oct 7 17:39:39 prox-01 networking[915]: sysctl: cannot stat /proc/sys/net/ipv6/conf/eno1/accept_ra: No such file or directory
Oct 7 17:39:39 prox-01 networking[915]: sysctl: cannot stat /proc/sys/net/ipv6/conf/eno1/accept_dad: No such file or directory
Oct 7 17:39:39 prox-01 networking[915]: sysctl: cannot stat /proc/sys/net/ipv6/conf/eno1/autoconf: No such file or directory
Oct 7 17:39:39 prox-01 networking[915]: ))
Oct 7 17:39:39 prox-01 networking[915]: warning: vmbr0: interface not recognized - please check interface configurationNow the only network related errors I see in the syslog are:
Code:
/bin/mv: cannot stat '/etc/network/interfaces.new': No such file or directoryI would gladly provide any other information needed, and try any workaround
Last edited:
goo proxmoxz