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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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wirehole
WireHole is a combination of WireGuard, Pi-hole, and Unbound in a docker-compose project with the intent of enabling users to quickly and easily create a personally managed full or split-tunnel WireGuard VPN with ad blocking capabilities thanks to Pi-hole, and DNS caching, additional privacy options, and upstream providers via Unbound.
There's an official repo for it https://github.com/pi-hole/docker-pi-hole
The way I get around this is to only make the pi-hole dns accessible when connected by VPN. There’s a package called wirehole that combines Pi-hole, WireGuard, and Unbound to do this. And it can run on a free-tier Oracle virtual machine.