Cannot Join to Cluster: TASK ERROR: 500 Can't connect to xx.xx.xx.xxx:8006

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chrits5981

New Member
Aug 4, 2025
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I am trying to join another node to a cluster that I just created, but I am getting TASK ERROR: 500 Can't connect to xx.xx.xx.xxx:8006.

I looked around the forum to find similar threads but only thread I can find had a resolution of changing the bridge. The network I chose for the cluster is a Linux VLAN that I made and the CIDR and gateway is attached to the VLAN and not the bridge. I am hoping someone can help me. Below is the parts of the of the network config. It is a LACP bond which is part of the bridge and there is a Linux VLAN made under it.

auto bond1
iface bond1 inet manual
bond-slaves eno3np2 eno4np3
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer3+4


auto vmbr0
iface vmbr0 inet manual
bridge-ports bond1
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094


auto vmbr0.XX
iface vmbr0.25 inet static
address XX.X.XX.XXX/24
gateway xx.xx.xx.xx
 
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Hi @chrits5981 , welcome to the forum.

The first test you should run is:

curl -k https://xxx.xxx.xx.xx:8006
Does this work between the nodes? Also, does SSH work across the nodes?

Does the error message provide any additional details? Check for related messages using:
journalctl -n 500

Are your hosts using public IPs? If not, there's no need to obscure the IPs, sharing them may help others spot misconfigurations.

Cheers!

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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I tired to ssh into the IP of node 1 using the second node and it stalled. I then tired to ssh into with with node 3 and it succeeded along with successfully joining to the cluster. Something is telling me that port 22 is blocked on that LACP bond on node 2. Thanks for the help, was stuck on this for a while. I will try and the other nodes and update this thread.
 
bbgeek17 said:
Check firewalls, check MTU, check ssh from node to itself, check ICMP, large ICMP, duplicate IPs, etc.

Good luck

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
Click to expand...
I am working with the Network Engineer to making sure port 22 to reachable to the assigned IPs of the nodes. The reason why I blanked out the IP addresses is because they are private IPs that was made for a client. Thanks again.
 
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