unable to connect to the internet from the vm inside the prxommox server

[sliman ibrhaim]

i had created a cluster consists of two nodes pve and pve1, and in the shell i can do the ping 8.8.8.8 but when i created vms and containers inside them i can't access to the internet and i can't ping 8.8.8.8 (but i can ping from the vm to pve and from the pve to vm )
what is the problem and how to fix it

 

[esi_y]

Please post cat /etc/network/interfaces and the said VM configuration for anyone to be able to help you.

 

[sliman ibrhaim]

Please post cat /etc/network/interfaces and the said VM configuration for anyone to be able to help you.

Please post cat /etc/network/interfaces and the said VM configuration for anyone to be able to help you.

this is the configraions of the proxmox server (pve)

and this is the congiration of the vm

 

[sw-omit]

So uuuhm, why are you settings both a DHCP and a static IP (without gateway) for Proxmox?

Also, have you tried setting a static, free, IP-address to your container/VM instead of DHCP and seeing if that did work?

 

[esi_y]

You definitely cannot route out due to the missing gateway, compare with:

https://pve.proxmox.com/wiki/Network_Configuration#_default_configuration_using_a_bridge

You also likely do not want to have any IP on the host NIC (manual as opposed to dhcp).

What is your physical topology for the cluster?

 

[sw-omit]

They mentioned they can ping 8.8.8.8 from the host before, so I'm suspecting the gateway "remains" or comes from either of the DHCP's on the host.
Still an unsupported and unwanted setup though.

Also, while I personally not really care about the physical setup of the cluster, having a cluster with only 2 nodes (which I just now clocked onto) also is strongly recommended against (at least without a Q-Device which is not a VM on one of the systems)

 

[esi_y]

They mentioned they can ping 8.8.8.8 from the host before

I was referring to the VM(s) that are on the bridge without gw.

Also, while I personally not really care about the physical setup of the cluster

I mostly ask to understand if this is some setup at a provider or actually 2 servers routed out and how / through which NIC. The two-node part is a separate topic, it's not really related to not getting it routed now.

 

[sw-omit]

DHCP-Requests are send to 255.255.255.255 / broadcast though, so I would think that even with the wrong network settings on the host, the VM should still work, but to exclude that I wanted to check static.
I've thought I've also seen a few topics of people who've messed something up with the IP-settings on the host, but the VM's running over them still worked normally, because the VM does not "see" anything from the hosts's network-config.

Containers might be different though, haven't played around with those much.


Either way though, we'll have to wait for our OP to post about the results with static IP's and possibly a bit more info about their setup indeed.

 

[sliman ibrhaim]

when i created a linux birdge (vmbr1 to the port enp0s8) for new vm it works successfully and i can ping 8.8.8
.8 for the proxmox node and from the vm inside it.
Thank you all.