Time-series and metrics
Prometheus
Prometheus focuses on endpoints, metric and label discovery, PromQL, targets, rules, chart-ready results, cardinality, retention, and guarded metadata previews.
Prerequisites
- Install the current DataPad++ desktop pre-release on Windows, macOS, or Linux.
- Have the endpoint, database file, or cloud account details for a Prometheus datastore you are authorized to use. Start with least-privileged, read-only access.
- Keep an independent backup before enabling edits, administration, restore, or transfer execution.
Connect and run a safe query
- 1
Create the connection
Open Library, choose Create connection, and select Prometheus and a supported Connection method tab.
- 2
Test and save
Complete the applicable fields and enable Read-only connection. Test connection when available; new local files and pending secondary credential changes must be saved first. Review runtime limitations and warnings.
Prometheus connection setup. The Prometheus connection dialog with supported method tabs and illustrative, non-secret settings. Expand optional sections and review runtime limitations before saving. Open full size - 3
Open the native explorer
Use Save Connection, or Create Database and Save Connection for a new local file, then open the Prometheus Explorer where supported.
- 4
Select a scope
Select the bucket / project scope that should be attached to the new tab.
- 5
Run a bounded read
Open a query tab, paste the bounded read-only sample below, and choose Run or press Ctrl/Cmd+Enter.
Prometheus native workflow. A representative Prometheus explorer and bounded read-only workflow. Replace the example objects with names from your datastore. Open full size - 6
Inspect the result
Inspect Results, Messages, History, and Details; dock the panel on the bottom or right as needed.
- 7
Export when needed
Export only the required rows after reviewing format, destination, and redaction options.
- 8
Open diagnostics or transfers
Open Diagnostics or Transfers from the drawer/status bar and treat disabled reasons as capability boundaries, not transient errors.
Connection fields
| Field | Required | Purpose | Safe example |
|---|---|---|---|
| Name | Yes | A clear profile name, without credentials. | Prometheus development |
| Connection method | Yes | Choose a supported tab. The fields below apply only to the selected method and deployment. | Connection fields / Connection string |
| Environment | No | Attach the intended variable and safety context. | Local development |
| Read-only connection | No | Enable for initial exploration. This does not make pre-release software safe for production workloads. | Enabled |
| Host / Port | No | Endpoint for a fields-based connection. Follow the selected deployment and runtime limitations; MongoDB SRV does not use an explicit port. | localhost / engine default |
| Database / default scope | No | Initial scope for browsing, where supported. | catalog |
| Complete connection string | Yes | Required in Connection string mode only. Saved unchanged as one vault secret with Save Connection. Blank keeps an existing stored value. | Paste your complete provider string; do not share it |
| Username | No | Authentication identity for the selected method. | catalog_reader |
| Password | No | Required only when the chosen authentication needs it. Save Connection stores changes; blank preserves an existing value, and Reveal… explicitly discloses it. | Stored in the desktop OS vault |
| Endpoint | No | General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
| Path prefix | No | Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
| Database | No | General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
| Organization | No | General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
| Bucket | No | General. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
| Query timeout (ms) | No | Advanced. Optional, depending on the method and server. Review runtime limitations before overriding the driver default. | Driver default |
Run the sample query
Prometheus read-only example
rate(http_requests_total[5m])Explore and inspect
- Browse metrics, labels, label values, targets, rules, alerts, scrape posture, retention posture, cardinality surfaces, access, and diagnostics.
- Inspect chart-ready vectors and matrices, label sets, sample tables, target/rule payloads, raw JSON, range warnings, and cardinality signals.
Diagnose, administer, and transfer
- Review targets, scrape health, rules, alerts, metrics/stats, retention posture, cardinality, access posture, and query range/step warnings.
- Preview metadata operations, target/rule review actions, retention/cardinality checks, API export, and guarded profile workflows.
- Import — Unavailable. Prometheus exports bounded instant or range query results. Import is unavailable because remote write cannot atomically fail when an existing series and timestamp would be replaced. Formats: Prometheus API JSON (native), OpenMetrics (native), CSV (portable-lossy). Destinations: local file. Prometheus remote write unconditionally replaces existing series/timestamps and cannot provide the required atomic fail-on-conflict guarantee.
- Export — Live. Prometheus exports bounded instant or range query results. Import is unavailable because remote write cannot atomically fail when an existing series and timestamp would be replaced. Formats: Prometheus API JSON (native), OpenMetrics (native), CSV (portable-lossy). Destinations: local file.
- Backup — Unavailable. This datastore has no supported in-process or server API for a full native backup artifact. Formats: Native managed backup (native). Destinations: cloud uri, server path. Full Prometheus backup and restore require excluded vendor tooling or storage-backend access.
- Restore — Unavailable. This datastore has no supported in-process or server API for a full native backup artifact. Formats: Native managed backup (native). Destinations: cloud uri, server path. Full Prometheus backup and restore require excluded vendor tooling or storage-backend access.
Capabilities and availability
| Capability | Status | Notes |
|---|---|---|
| Native explorer | Preview | Browse metrics, labels, label values, targets, rules, alerts, scrape posture, retention posture, cardinality surfaces, access, and diagnostics. |
| Read queries | Preview | Use PromQL editors, metric/label builders, deterministic PromQL IntelliSense, bounded ranges, instant/range query modes, and profile or metadata previews. |
| Inline editing | Unavailable | Use a reviewed statement or the engine-native tool instead. |
| Diagnostics / administration | Guarded | Preview metadata operations, target/rule review actions, retention/cardinality checks, API export, and guarded profile workflows. |
| Import / export / transfer | Guarded | Availability follows the authoritative runtime transfer manifest and shows a disabled reason when execution is not implemented. |
Safety and limitations
Troubleshooting
| Symptom | Resolution |
|---|---|
| Test connection fails or times out | Verify endpoint, port, TLS mode, proxy settings, service health, firewall rules, and network access. Keep the profile unsaved until the test explains the failure. |
| Explorer branches are empty or disabled | Confirm the selected bucket / project, refresh the branch, and grant the minimum metadata permissions described in the connection warning. |
| Run, edit, admin, or transfer is disabled | Read the visible disabled reason. Select a compatible target, turn off read-only only when authorized, or use the documented preview/export fallback. |
| The sample query fails or returns different columns | Replace the example names with objects from your Prometheus datastore, confirm the selected bucket / project, and keep the query bounded while you validate the result. |