I've been having connectivity issues since updating to 4.2 both through a dist-upgrade and after a fresh installation.
I first had the issue a few days ago when updating nodes from 4.1 to 4.2 using the no-subscription repository - the first symptom was being unable to connect to any updated node using the web GUI and being served a ERR_CONNECTION_REFUSED notice in my browser.
On a different cluster I had updated recently enough (no more than a week ago) from the pvetest repository to get the new web GUI and had no issues at that point, so some time between then and now there must have been changes which have broken something or other.
I rolled all affected nodes back to 4.1 via a fresh install, however updating one of these nodes to 4.2 via the no-subscription repository has caused the same issue again and this time I have noticed (since the other nodes were left at 4.1 while I tested the 4.2 upgrade again) that the functional 4.1 nodes are unable to communicate with the 4.2 node ('connection refused' when trying to browse the 4.2 node from a 4.1 node GUI).
I then tried a fresh install of 4.2 onto the updated 4.2 node and the problem persists, ERR_CONNECTON_REFUSED when trying to connect to the web GUI.
I am able to SSH to all nodes, including the affected 4.2 node.
I am not familiar with many of the inner workings of Proxmox - where would be a good place to start with diagnosing and fixing this issue?
I first had the issue a few days ago when updating nodes from 4.1 to 4.2 using the no-subscription repository - the first symptom was being unable to connect to any updated node using the web GUI and being served a ERR_CONNECTION_REFUSED notice in my browser.
On a different cluster I had updated recently enough (no more than a week ago) from the pvetest repository to get the new web GUI and had no issues at that point, so some time between then and now there must have been changes which have broken something or other.
I rolled all affected nodes back to 4.1 via a fresh install, however updating one of these nodes to 4.2 via the no-subscription repository has caused the same issue again and this time I have noticed (since the other nodes were left at 4.1 while I tested the 4.2 upgrade again) that the functional 4.1 nodes are unable to communicate with the 4.2 node ('connection refused' when trying to browse the 4.2 node from a 4.1 node GUI).
I then tried a fresh install of 4.2 onto the updated 4.2 node and the problem persists, ERR_CONNECTON_REFUSED when trying to connect to the web GUI.
I am able to SSH to all nodes, including the affected 4.2 node.
I am not familiar with many of the inner workings of Proxmox - where would be a good place to start with diagnosing and fixing this issue?