System startup error and no network: Failed to start ifupdown2-pre.service - Helper to synchronize boot up for ifupdown.

[xyzliang]

I tried to install the latest pve8 on my Dell T640 server. There were some errors during the boot of the installation image, but I still managed to enter the installation program successfully. After the installation was completed, there was a very long waiting time before entering the system, and finally, the following error message was output:

But still able to enter the system.


But can't connect to the network, even though I have configured the IP address.

 

[leesteken]

It's strange that there is no virtual bridge (usually vmbr1 is setup by the installer) that gets the IP address. Can you show the output of cat /etc/network/interfaces?

EDIT: I don't know what's wrong here. I have not seen this before.

 

[xyzliang]

It's strange that there is no virtual bridge (usually vmbr1 is setup by the installer) that gets the IP address. Can you show the output of cat /etc/network/interfaces?

Thank you for your reply. In fact, following the suggestion of chatgpt4, I tried adding kernel boot parameters acpi=off, then updated GRUB and restarted. However, now I have been stuck at this point for about ten minutes (previously it was stuck for about two to three minutes). I will wait for a while and then try entering GRUB to remove acpi=off in order to provide you with details of the interfaces file in the system.

 

[xyzliang]

It's strange that there is no virtual bridge (usually vmbr1 is setup by the installer) that gets the IP address. Can you show the output of cat /etc/network/interfaces?

My network configuration file is as follows. I have not manually configured it, but only entered the management address of the network card selected during installation.

 

[xyzliang]

If you can help me solve the problem, I would be extremely grateful. ESXi cannot install the system on its own created software RAID, which is what I need. This is also why I chose PVE.

 

[showiproute]

Can you manually do a ifup vmbr0 ?

 

[xyzliang]

Can you manually do a ifup vmbr0 ?

Thank you for your suggestion, but it seems that nothing has happened and the problem still persists. The result of ip addr is also the same.

 

[xyzliang]

I tried to reinstall pve8. This time the installation and boot speed were very fast, without encountering previous errors. However, after entering the system, I still couldn't connect to the network, even when pinging the gateway.

 

[xyzliang]

Thank you for everyone's help. After a series of troubleshooting suggestions from chatgpt4, I had to change my network cable interface (the server has two network ports) and modify the relevant configurations. After restarting the network, I saw that PVE successfully connected to my router (it would also connect before, but it would disappear after a few seconds, and I was not sure what the problem was), and I could ping the gateway and everything is normal.

I am still curious why this situation occurred?

 

[showiproute]

Might it be possible that you haven't had the right port connected to your router/switch?

 

[xyzliang]

Might it be possible that you haven't had the right port connected to your router/switch?

I believe it's not because of this. I tried reinstalling pve8 again, and now the problems no longer exist!

 

[showiproute]

And the NIC names are equal?