Debian 11 Bullseye
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Prometheus : Visualize on Grafana2021/09/17

 
Web UI is included in Prometheus but it's also possible to visualize time series data on Grafana.
[1]
Install Grafana, refer to here.
It's OK to install it on any Node. (install it on Prometheus server Node on this example)
[2] Access to Grafana Dashboard and Open [Configuration] - [Data Sources] on the left menu.
[3] Click [Add data source].
[4] Click [Prometheus].
[5] Input Prometheus Server endpoint URL on [HTTP] field and Click [Save & Test] button.
Then, the message [Data source is working] is shown if that's OK.
[6] Next, Open [Create] - [Dashboard] on the left menu.
[7] Click [Add Query].
[8] Select a query you'd like to visualize data on [Metrics] field.
[9] After selecting a query, visualized graph is shown. To save [Dashboard], Click [Save dashboard] icon.
[10] Set any Dashboard name and Click [Save] button.
[11] To add more queries, it's possible to put more Graphs on a Dashboard.
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