I have three APC PDUs – all the AP7920 model, they monitor power consumption and allow remote switching of a bunch of devices in the main rack. Last week I sourced a fourth device to live in the garage comms rack. This came from eBay, and as has been the case with every used device I’d have, it still had old IP config and an unknown username and password set.
So for future-Howard’s benefit: how to reset the password and settings so it can be set up from scratch…
A quick How To for getting conditional DNS forwarding working on the UDM-PRO hardware. Before this upgrade I ran a CloudKey Gen 2 controller and a USG-PRO-4 for routing – this allowed me to deploy custom configuration via the config.gateway.json to insert extra options to the running config.
The options I needed were to force the DNS server on the gateway to check against my Active Directory DNS for those entries that arrive with the correct suffix – ad.durdle.com. This allows the lookup of clients from the UniFi’s DHCP lease table as well as AD DNS entries.
The UDM-PRO is a completely different beast from the old controller and gateway, running an entirely different OS. It doesn’t support config via json. So what’s a geek to do?
A (minor) annoyance of my recent new build Windows 10 machine has been its inability to properly sleep. I’d hit Sleep, it’d go through the motions of spinning down fans and sleeping… and then immediately spring back into life.
I’ve actually put up with this for months, but yesterday spent some time working out what was happening, so for Future Howard’s benefit, here’s how to see what is keeping your machine awake.