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Replace strings in Grafana® dashboards

Sometimes, it is useful to replace all occurrences of a string in Grafana® metric expressions. This page describes how to do that using the aiven-string-replacer-for-grafana tool, which is on GitHub.

The approach described will work with your own Grafana® cluster or with an Aiven for Grafana® cluster


Building the tool requires a Go environment. Follow the Go installation instructions.

To build the tool from its source repository, run the following at the terminal prompt:

go install

Values you will need

GRAFANA_API_KEYThe API key for accessing Grafana
GRAFANA_DASHBOARD_URLThe URL for the Grafana dashboard
GRAFANA_DASHBOARD_UIDThe UID that identifies the Grafana dashboard
OLD_STRINGThe old stringto replace
NEW_STRINGThe new stringto use instead

Get the Grafana API key

The key needs the Grafana API key to be able to edit the Grafana dashboards.

To get your API key (GRAFANA_API_KEY):

  • Go to your Grafana® UI. Select the Configuration icon and then select the API keys tab

  • If you already have an appropriate API key available, save a copy of it.

  • Otherwise, select Add API key and fill in the Key name, Role and Time to live. Click Add and then save the new API key.


    Role must be either Editor or Admin.

To get the Grafana dashboard URL and UID


  • Go to the dashboard on which you want to change metric expression strings.
  • Save the dashboard URL (GRAFANA_DASHBOARD_URL).
  • Select the Dashboard settings icon, then select JSON Model. Save the dashboard UID from the JSON Model page (GRAFANA_DASHBOARD_UID).

Perform the replacement

Use a command like the following to perform the replacement, changing the placeholder variable names to the values you collected above:

aiven-string-replacer-for-grafana \
-from OLD_STRING \

Example: changing elasticsearch_ to opensearch_

For instance, use the following command to change all metric expressions that start with elasticsearch_ to instead start with opensearch_:

aiven-string-replacer-for-grafana \
-from elasticsearch_ \
-to opensearch_ \

The change will be visible in the Query panel:

  • Before running the command, metrics start with elasticsearch_:

    A screenshot of the Grafana Dashboard query showing metrics with prefix

  • After running the command, metrics start with opensearch_:

    A screenshot of the Grafana Dashboard query showing metrics with prefix

Use the version history to revert

If necessary, the Dashboard changelog page can be used to revert a change to a specific version.

  • Go to the dashboard that you modified.
  • Select the Dashboard settings icon, then select Versions.
  • This will show your Dashboard changelog, and you can use this to revert to an earlier version of the dashboard.

A screenshot of the Grafana Dashboard version changelog after conversion