Galera nodes are "SYNCED" but each has "Node's agent is offline" ?

[John Hammell]

Just setup my first Galera Cluster. On my laptop, using LXD containers on Ubuntu 22.04

Seems to be working fine, however, in the Galera Manager dashboard the 3 nodes I setup, they all show "SYNCED" in green but there's a little red dot near the lower right corner of the node icons.

When I hover my mouse over those icons the following text appears: "Node's agent is offline"

Not sure exactly what this means and I have not been able to find details about "Node's agent is offline" in the docs, using the search nor via Google search.

Can anyone explain or link me to a page that explains what this is and why I'm seeing it?

Pic of what I'm seeing is attached: