I am only easily able to see logs from my own node, but can get others as needed.
Sequence of events so far:
16:05 UTC - scheduled upgrade start
16:15 Noticed that no nodes responded to get-validator-info via my monitoring script
16:22 Ran a restart command on my FoundationBuilder node "sudo systemctl restart indy-node" (node seems to have went into a restart loop, then failed)
16:43 Tried to run start on my node with same results
17:10 Stopped indy-node-control, then started indy-node. (same results)
I am including journalctl and node logs to begin with. Please request other logs as needed.