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SmoothWAN
An OpenWrt flavor for internet bonding and seamless failover using Speedify with few extras.
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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.
Personally, I would do a Speedify multi-WAN router (smoothwan) on a RaspberryPi or similar with a cellular modem or two coming in set as secondary connections and a 'travel router' set as the primary connection, and it can connect to wifi networks at RV sites, Walmart parking lot, etc. Use this one with an external antenna mounted outside the RV. Then you still need a wireless Access Point, any compact wifi router could work if you're aiming for cheap, compact, and simple, or a Ubiquiti or TP-Link Omanda WAP if you want a more feature rich AP.