MQTT Jobs

PROJECT OVERVIEW We need a small, working proof of concept that collects retail sales transactions over MQTT, stores them locally in SQLite, loads them into Hadoop (HDFS + Hive) and produces basic sales reports. Everything must run on one machine with Docker so we can demo it and build on it later. DATA FLOW 1. A sales simulator (Python) publishes transactions to an MQTT broker (Mosquitto) 2. A collector subscribes and saves every message in SQLite (it keeps working if Hadoop is down) 3. A loader moves new SQLite rows to HDFS on a schedule and on demand 4. Hive tables on HDFS and SQL queries produce the sales reports DELIVERABLES 1. : Mosquitto, single-node Hadoop 3.x (HDFS + YARN), Hive. One command starts it all. 2. Sales simulator - 5 stores, 200 products, configurable rate (defaul...

I need hands-on help finalising the configuration of our Linux-based industrial gateways that sit on board commercial vessels. The gateways are already built into our monitoring platform; the job is about tightening up their field readiness rather than starting anything from scratch. The immediate milestone is remote commissioning. Over the next four weeks I want each new unit to boot, establish a secure MQTT link, pull its TLS certs, and start streaming CAN/J1939 and NMEA data to our cloud broker without manual intervention. If you have brought similar hardware online before, you know how valuable clear-cut configs and repeatable scripts are to installers working at sea. Key areas we will tackle together • MQTT broker connection details, authentication and automated cert renewal ...