26 lines
949 B
Markdown
26 lines
949 B
Markdown
|
## Local development
|
||
|
|
|
||
|
|
```sh
|
||
|
|
docker-compose-up -d
|
||
|
|
```
|
||
|
|
|
||
|
|
### Prometheus
|
||
|
|
|
||
|
|
The tool that serves as the data source for the Grafana representation layer.
|
||
|
|
Adds timestamps to enable series data. Includes query language (PromQL) that
|
||
|
|
Grafana uses to retrieve and transform data. Also provides alerting.
|
||
|
|
|
||
|
|
> In a typical implementation, Prometheus collects the raw metrics data from various systems, and Grafana connects to Prometheus as a data source to create dashboards with visualizations of those metrics.
|
||
|
|
|
||
|
|
### Node exporter
|
||
|
|
|
||
|
|
Prometheus has different plug-ins called "exporters". These expose metrics from
|
||
|
|
different processes and services and present them in a format that Prometheus
|
||
|
|
can scrape. Node Exporter is one of these - it exposes hardware and OS metrics
|
||
|
|
(such as CPU use and load, memory, disk capacity etc).
|
||
|
|
|
||
|
|
### Loki
|
||
|
|
|
||
|
|
Loki is for storing and displaying logs. This is part of Grafana. Promtail (also
|
||
|
|
part of Grafana) is for collecting the logs.
|