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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.
Here is info how I installed Debian to Chromebook:
https://github.com/xet7/chromebook
If it needs locking down, just not give root password to students. Manage them all with SaltStack etc.
Spacewalk was discontinued 3 years ago and was only for fedora/rhel/centos based systems.
https://github.com/spacewalkproject/spacewalk/wiki
NOTE:
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