How to Change Legend Name In Grafana Using Regex?

To change legend names in Grafana using regex, you can create a new metric query with a custom alias that includes a regex pattern. By using regex in the alias, you can match specific parts of the metric name and modify the legend display accordingly. This can be done by editing the metric query, selecting the "Alias or regex" option, and inputting the regex pattern in the provided field. The regex pattern can include capture groups to extract specific parts of the metric name and rearrange them in the legend. This allows you to customize the legend name based on the data being displayed in the Grafana dashboard.

What is a legend name in Grafana?

A legend name in Grafana is a label that appears next to a data series or metric on a graph. It helps users identify and differentiate between different data points or series on a visualization. Legend names are customizable and can be set to reflect the name of the metric or data series being displayed.

What are some common regex patterns used in Grafana legend names?

1. Exact match: "^exact match$"
2. Case-insensitive match: "(?i)case-insensitive match"
3. Partial match: "partial match"
4. Wildcard match: "wild*"
5. Numeric range match: "[0-9]+"
6. Word boundary match: "\bword\b"
7. Repetition match: "repeated{3}"
8. Negation match: "^(?!negative)"
9. Alternation match: "alternative1|alternative2"
10. Anchored match: "^anchored$"

How to revert legend name changes in Grafana using regex?

To revert legend name changes in Grafana using regex, you can follow these steps:

1. Go to the Grafana dashboard where you want to revert the legend name changes.
2. Click on the Settings icon (gear icon) in the top right corner of the dashboard.
3. In the Settings menu, select "Variables".
4. Find the variable that you want to revert the legend name changes for and click on the "Edit" button next to it.
5. In the Variable Editor, go to the "Legend" tab.
6. In the "Legend format" field, you can use regex to modify the legend name.
7. To revert the legend name changes, you can use regex to match the changed legend names and replace them with the original legend names.
8. Once you have made the necessary changes using regex, click on the "Save" button to apply the changes.

By following these steps, you can revert legend name changes in Grafana using regex.

How to change the color of legend names in Grafana using regex?

To change the color of legend names in Grafana using regex, you can use the following steps:

1. Go to the Grafana dashboard where you want to change the color of legend names.
2. Click on the panel that contains the legend names you want to change the color of.
3. Click on the "Legend" tab at the top of the panel settings.
4. In the "Display" section, you will see a field called "Legend format". Here, you can use regex to modify the legend names. For example, if you want to change the color of legend names that contain the word "error", you can use the following regex pattern:

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/(error)/

1. Next, you can use CSS styling in the legend format field to change the color of the matched legend names. For example, you can use the following CSS code to change the color of the matched legend names to red:

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<span style="color: red">$1</span>

1. Click on the "Save" button to apply the changes.

By following these steps, you can change the color of legend names in Grafana using regex and CSS styling.