Is it possible to have 2 different sources i.e influxdb and prometheus in a single dashboard in grafana.
Yes, each panel or variable on a dashboard can use different data source.
Variables can use different data source and you can use it on panel no matter what data source uses. It allows you to mix information to have a better dashboard with more details.
Also, you have three especial data sources:
Grafana built-in data source that generates random walk data.
Mixed query multiple data sources in the same panel.
Dashboard use a result set from another panel in the same dashboard.
More info about data sources here
Yes, you can select the desired data sources in several points of the dashboard configuration (like panels and variables) and you can use different values for each one.
Related
Well, let's say that I have the query from my previous question: How to do multi graph time series on Grafana with Kusto
Then I'd like to consume the tiemposCicloBruto variable from one panel to another in order to avoid repeating queries.
I saw: https://grafana.com/blog/2020/10/14/learn-grafana-share-query-results-between-panels-to-reduce-load-time/
But there isn't any way to share variables at all...
I also tried it as a dashboard variable, but it doesn't seem to support tabular expressions at all...
You can share only input variables across dashboard panels. Variables work as primitive text substitution in one direction (from dashboard to query), and do not take into account any context in your query language.
Your link tells about sharing results of the query between different panels. If exact same result set returned to a panel fits your needs, you can reuse it "for free", without putting load on the database. You don't need to save it into any variable, you just set it as a pseudo-datasource and you get the result immediately.
You can factor this feature into design of you panels. Examples could be:
time series plus histogram visualizations of the same data;
time-series chart plus a panel with latest readings (or use other Grafana reduce expressions).
I'm using Grafana v9.1.8.
I created a panel bases on data from influxdb.
The data only sent when application is working, so sometimes there is no data.
And the dashboard will show just 'No Data' in the middile of the panel without any graph.
I'm trying to keep the graph(axis) shown even if there's no data, but I cannot find the solution.
As far as I know, there is no such feature on Grafana at the moment, but I found this solution:
https://community.grafana.com/t/what-to-show-when-the-panel-is-without-data/66524/9
Make a fake union, check if you have any data and if you don't create some random time data without other parameters. As they say in the answer, this may not be scalable, as you need to add extra lines for each query, but it may be a workaround.
I'm trying to add a derived field that consist of multiple parts. The help text in Grafana suggests that it should be possible to access multiple capture groups, but all I can find is the ${__value.raw} variable. Are there other undocumented variables to access other capture groups?
Metrics example - something.{variable}.success & something.{variable}.total
What I want to achieve is multiple series graph containing the success percentage for each feature variable.
Trying asPercent(something.*.success, something.*.total) makes graphite simply return 400 in grafana.
As I understand I would be able to achieve this by applyByNode(), but it seems that it's not available in grafana's graphite integration? I'm using self-hosted grafana 7.0 with graphite 1.1.7 .
I also seen example of nesting reduceSeries and mapSeries, but all of them use predefined values for wildcard, in my case there are too many of them to bother.
I'm using Grafana and Prometheus to monitor our server. We have a lot of database procedures like "select_users" or "insert_task". In order to monitor how many pending database procedure calls are there in the server, we add data points for every procedure call in Prometheus dynamically. Now we have data points like "pending_select_users", "pending_insert_task" in Prometheus.
However, since there are so many database procedures(and the number will increase during developing), it's not very practical for us to add metrics in Grafana for each data point manually. Is there a way we can add metrics dynamically in Grafana? Since all the data point have a common name prefix("pending_"), can we add metrics in Grafana with wildcard? Or is there a better way to do this?
Since Grafana uses JSON as the underlying dashboard DSL, you could dynamically create dashboards, every time you add a new metric, and import it (via API) into Grafana.
I'd add an automation on top of your Prometheus targets, scrape the metrics, and if new metrics (with the required prefix) are found without a matching dashboard, the automation would create it and import it into Grafana.
Grafana API: http://docs.grafana.org/http_api/ (specifically for Dashbboards).
The solution described by #Eitan is definitely feasible. The same goes for using a library like grafonnet to generate dashboards dynamically.
But the simplest approach in my opinion would be to create a variable in Grafana that contains all the label values you are interested in. Something like
label_values(metric_name{label_name=~"prefix*"}, label_name)
should work for that. And then use the repeating panels / rows feature of Grafana to repeat a set of panels for every value in the variable. Though this could get out of hand if you have dozens / hundreds of distinct values.
https://grafana.com/docs/grafana/latest/variables/repeat-panels-or-rows/
https://grafana.com/blog/2020/06/09/learn-grafana-how-to-automatically-repeat-rows-and-panels-in-dynamic-dashboards/
If you want to generate just a single dashboard from your Proimetheus metrics sample, you can use this service:
http://eljah.tatar/micrometer2grafana/