[SOLVED] 2 Node Cluster -VMs have internet access on one but not the other

[RickoT]

Greetings,
I have just built a 2 node proxmox cluster.

I have 2 machines with identical hardware as follows:

• 8 Core Processor
• 32 GB RAM
• 1 SSD
• 2 NICs (one built in, one card)

Network Config (identical on each device except CDIR obviously)


/etc/network/interfaces


The firewall is configured as such:


The only difference in both machines, is Node 1 has been tinkered with to fix the issue, but node2 was out of the box untouched except for network config.
On node 1:

• From VM
  • Can ping bridge IP
  • Can't Ping LAN IP or hostname
  • Can't ping internet IP or hostname
• From Host
  • Can Ping Bridge IP
  • Can ping LAN
  • Can ping internet

On Node 2:

• From VM
  • Can Ping Bridge IP
  • Can ping LAN
  • Can ping internet
• From Host
  • Can Ping Bridge IP
  • Can ping LAN
  • Can ping internet

Any assistance would be most appreciated!

Thanks!
~Rick

 

[RickoT]

So after more tinkering and looking deeper into the network stack.. I discovered that yes, my proxmox config was perfect... but docker had messed something up with how the bridge was operating and I think attaching to the nic instead of the bridge (maybe overriding the network config?) who knows. I deleted the default docker_gwbridge network and it works fine. So this was basically my own fault but I'm happy to share it with anyone else who tries to build proxmox with docker

Thanks!
~Rick

 

[RickoT]

Just to add an additional note, it turns out that I had installed docker and configured it on Node 1 and created a swarm and all that, but did nothing with node 2 except add it to the swarm... will need to keep an eye on this as I work more with docker on these nodes