QuestDB on Ubuntu 24.04 LTS by cloudimg

## QuestDB on Ubuntu 24.04 LTS by cloudimg

QuestDB is a high-performance open-source time-series database built for fast ingestion and low-latency SQL analytics. It speaks standard SQL with time-series extensions (SAMPLE BY, LATEST ON, ASOF JOIN), ingests over the InfluxDB Line Protocol, REST and the PostgreSQL wire protocol, and ships an interactive web console for writing queries and visualising results. The cloudimg image installs QuestDB 9.4.3 with its bundled Java runtime at /opt/questdb (no system Java needed), runs it as a dedicated service account, binds every listener to loopback behind an nginx reverse proxy on port 80, persists the QuestDB data root on a dedicated Azure data disk, and generates a unique web password on the first boot of every VM. Backed by 24/7 expert support.

Dedicated Data Disk

The QuestDB data root (db, conf, log) lives on a dedicated, independently resizable Azure data disk mounted at /var/lib/questdb, separate from the OS disk and re-provisioned with every VM, so ingested time-series persist. Snapshot it to back up your data.

Secure By Default

Open-source QuestDB has no built-in authentication, so the web console, REST, PostgreSQL-wire and ILP listeners are all bound to loopback and the console plus REST API are fronted by nginx on port 80 which enforces HTTP Basic auth. Only port 80 is exposed; a unique admin password is generated on first boot and written to a root-only file. Front the proxy with TLS before production.

Licensing

QuestDB is Apache-2.0 and free. The cloudimg charge covers packaging, security patching, image maintenance and 24/7 support.