Kernel-based Virtual Machine (KVM) is a powerful component of the x86 hardware virtualization extensions required for Intel VT and AMD-V. Virtualization technologies have been growing steadily in their capabilities and adoption. Linux kernel has included the KVM component in the mainstream since 2.6.20. It is a crucial part of using virtualization on Linux machines, and is frequently used with software similar to QEMU.
Kerberos is a computer network authentication protocol that allows entities (users or hosts) on a non-secure network to prove their identity to each other in a secure manner. It’s a ticket-based system, meaning it uses encrypted tickets to verify identity rather than transmitting passwords directly over the network. Developed by MIT, it’s widely used in operating systems like Windows, macOS, and others.
Moodle is a Learning Management System (LMS) designed to provide educators, administrators and learners with a single robust, secure and integrated system to create personalised learning environments.
Grafana is a multi-platform open-source analytics and interactive visualization web application. It can produce charts, graphs, and alerts for the web when connected to supported data sources.
As a visualization tool, Grafana can be used as a component in monitoring stacks, often in combination with time series databases such as InfluxDB, Prometheus and Graphite; monitoring platforms such as Sensu, Icinga, Checkmk, Zabbix, Netdata, and PRTG; SIEMs such as Elasticsearch, OpenSearch, and Splunk; and other data sources. The Grafana user interface was originally based on version 3 of Kibana.
Grafana. (2025, January 8). In Wikipedia. https://en.wikipedia.org/wiki/Grafana
Cassandra is a NoSQL database. It is a database management system designed for use with large volumes of data across multiple computers. It prioritizes availability and scalability. It is well suited to systems with high write requirements. Cassandra is maintained by Apache.
| Feature | Cassandra | RDBMS |
|---|---|---|
| Organization | Keyspace → Table → Row | Database → Table → Row |
| Row Structure | Dynamic columns | Fixed schema |
| Column Data | Name, type, value, timestamp | Name, type, value |
| Schema Changes | Runtime modifications | Usually requires downtime |
| Data Model | Denormalized | Normalized with JOINs |