Grafana datasource plugin for PRTG

maxmarkusprogram · June 26, 2025, 2:06pm

Click the refresh page button, set 10 secs update frequency

eudeadrien · June 26, 2025, 3:01pm

No, I’ve already tested everything. There’s a problem interpreting the data.

I went to the Grafana server logs and found this:

juin 26 16:58:32 debian grafana[5944]: logger=plugin.maxmarkusprogram-prtg-datasource t=2025-06-26T16:58:32.848441417+02:00 level=error msg=“Failed to parse datetime” error=“parsing time "6/26/2025 4:00:00 PM" as "01/02/2006": cannot parse "6/26/2025 4:00:00 PM" as "01"” input=“6/26/2025 4:00:00 PM”

That must be my problem

maxmarkusprogram · June 26, 2025, 4:31pm

Thanks for the Info

You are right.

maxmarkusprogram · June 26, 2025, 8:19pm

Hello Grafana Community,

I am developing a custom Grafana datasource plugin for PRTG. I have noticed a strange issue and would like to ask for your help.

When I use the original plugin without any custom changes, everything works perfectly and I am able to connect to the PRTG API without any issues.

However, after I push my own customized version of the plugin to Github and apply some changes based on received feedback, I encounter the following error when I try to save and test the datasource in Grafana:

Failed to connect to PRTG API: Get “https://prtg.musta/api/status.json?…”: dial tcp 127.0.0.1:443: connect: connection refused

Some important notes:

My datasource settings (path, API key, timezone, etc.) are exactly the same in both cases.

With the original (unmodified) plugin: it works fine.

With my customized version: I get a "connection refused" error and Grafana tries to connect to 127.0.0.1:443 instead of the correct hostname.

My questions:

Why would the backend suddenly try to connect to 127.0.0.1 when the path is set as prtg.musta?

What should I check in my plugin code or configuration to avoid this issue?

Are there any common mistakes or best practices when passing the hostname/path from the frontend to the backend in custom datasource plugins?

Is there anything specific I should check in the plugin options, plugin.json, or backend code?

Any advice or suggestions would be greatly appreciated. Thank you very much for your support!

I have little knowledge about prtg for your settings. for the first time I installed the demo version on my computer to develop the grafana dasource plugin for prtg. maybe it can help me to set prtg.

Best regards,

maxmarkusprogram · June 28, 2025, 8:50am

https://youtu.be/9GbZOv7tVIQ and

I posted two videos on YouTube, the local time zone issue has been resolved, and the issue with the last 30 days and earlier has been fixed.

If you encounter any errors, please let me know.

muchelaguito · July 2, 2025, 3:36pm

I am having issues with installing it, this is my first try but I keep getting this error once I finished installation and try to add a new data source, and click on the PRTG plugin:
Error: Minified React error #130; visit Minified React error #130 – React for the full message or use the non-minified dev environment for full errors and additional helpful warnings.

at div
at div
at m (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:211:1221)
at div
at http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:211:49624
at div
at http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:211:49624
at div
at http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:211:49624
at eval (http://10.224.71.216:3000/public/plugins/maxmarkusprogram-prtg-datasource/module.js?_cache=1.0.0:3:52818)
at o (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:1:170)
at i (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118489)
at g (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118998)
at div
at div
at div
at Za (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:25126)
at gn (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:187:4995)
at Na (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:29666)
at ms (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:29796)
at h (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:425:68)
at div
at z (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:4345:820)
at div
at du (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:30082)
at gn (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:187:4995)
at y (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:187:2689)
at Yo (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:12771)
at ht (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:66:950)
at Pa (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:14519)
at W (http://10.224.71.216:3000/public/build/1788.bfc60a5ad6b97985daa0.js:62:4517)
at Lr (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:412:1445)
at div
at r (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:212:36848)
at div
at ve (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:1:12194)
at div
at div
at div
at oe (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:36597)
at m (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:29690)
at div
at div
at Co (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:1:9553)
at Ri (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:628:3974)
at Pt (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:183:99307)
at WithTheme(Connect(Ri))
at div
at div
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at oe (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:124:36597)
at m (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:29690)
at Di (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:634:32)
at Pt (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:183:99307)
at i (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118489)
at g (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118998)
at div
at i (http://10.224.71.216:3000/public/build/1788.bfc60a5ad6b97985daa0.js:1:2295)
at div
at i (http://10.224.71.216:3000/public/build/1788.bfc60a5ad6b97985daa0.js:1:4280)
at J (http://10.224.71.216:3000/public/build/1788.bfc60a5ad6b97985daa0.js:1:9618)
at div
at Bi (http://10.224.71.216:3000/public/build/explore.be4f716c065eb7748d1d.js:634:2456)
at Suspense
at i (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118489)
at cg (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:5680:8041)
at de (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:228:23610)
at Eo (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:209:4728)
at zn (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:209:10219)
at Xu (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:228:11773)
at de (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:228:25805)
at div
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at main
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at qf (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:5680:2407)
at Eo (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:209:4728)
at zn (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:209:10219)
at dn (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:209:9608)
at hc (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:228:12072)
at de (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:228:19776)
at div
at o (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:212:13720)
at v (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:41:14074)
at p (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:659:220508)
at l (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:566:21354)
at i (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118489)
at g (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:192:118998)
at Me (http://10.224.71.216:3000/public/build/5707.996cba0f67db0165b4a5.js:187:529)
at ug (http://10.224.71.216:3000/public/build/53.6765d854546e5211a811.js:5691:122)

Any ideas?
This is the corresponding grafana log:
logger=context userId=1 orgId=1 uname=admin t=2025-07-02T11:55:11.874400997-04:00 level=info msg=“Request Completed” method=GET path=/api/gnet/plugins/maxmarkusprogram-prtg-datasource status=404 remote_addr=172.18.151.172 time_ms=54 duration=54.587404ms size=116 referer=http://10.224.71.216:3000/connections/datasources/edit/c7352289-748c-4418-b6cd-518f8bb145bc handler=/api/gnet/*

maxmarkusprogram · July 4, 2025, 10:13am

Enable Unsigned Plugin in Grafana (Dev Mode)

To allow Grafana to load your custom (unsigned) plugin during development, follow these steps:

⸻

Step 1: Edit grafana.ini

Locate and open the grafana.ini configuration file. Then, add or edit the following under the [plugins] section:

[plugins]
allow_loading_unsigned_plugins = maxmarkusprogram-prtg-datasource

Make sure the value matches the id field in your plugin’s plugin.json:

“id”: “maxmarkusprogram-prtg-datasource”

⸻

Where is grafana.ini?
• Linux: /etc/grafana/grafana.ini
• Windows: C:\Program Files\GrafanaLabs\grafana\conf\grafana.ini
• Docker: Set it via an environment variable:

-e GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS=maxmarkusprogram-prtg-datasource

⸻

2 Restart Grafana

mauroz7 · July 7, 2025, 8:13am

Good evening, everyone. I installed the plugin on the latest version of Grafana 12.0.2 running Ubuntu, and the API isn’t connecting to my PRTG server.
I modified the Default.ini on my Grafana server, and it still isn’t connecting.
The error is: Plugin status check failed.
I’m leaving a screenshot to see if you can help me. Thank you very much!

charlescamillerisayd · July 8, 2025, 7:32am

Restart Grafana service and try to test again. If you test more than once it outputs that error. Each time you test, the next time you have to restart the service first.

If you check the grafana logs you will find that it gives a critical error.

charlesscr · July 8, 2025, 11:44am

In my case, the restart method works, but I’m still receiving events from 5 hours ago, so I’m not getting real-time monitoring.
I’ve applied time zone changes in both PRTG and Grafana, but the issue persists.
It’s 8:42 here.

charlescamillerisayd · July 8, 2025, 11:59am

I know that this might sound silly, but confirm that the servers have the same time zones too. I had something similar, and the Grafana server was in the incorrect timezone.

mansion · July 10, 2025, 8:43pm

#This is how I fixed the timezone issue when I encountered it. I have yet to update to the latest plugin.
#Find the function parsePRTGDateTime and replace the block of code with this.  I hope this helps.
###############################################################################################
func parsePRTGDateTime(datetime string) (time.Time, string, error) {
    if strings.Contains(datetime, " - ") {
        parts := strings.Split(datetime, " - ")
        if len(parts) == 2 {
            datetime = strings.TrimSpace(parts[1])
        }
    }

    layouts := []string{
            time.RFC3339,                         // 2006-01-02T15:04:05Z07:00
            "2006-01-02T15:04:05",                // ISO 8601 without TZ
            "2006-01-02 15:04:05",                // ISO with space
            "2006/01/02 15:04:05",                // Slash-separated
            "01/02/2006 03:04:05 PM",             // US 12-hour
            "01/02/2006 15:04:05",                // US 24-hour
            "02 Jan 2006 15:04:05",               // DMY with text month
            "02 Jan 2006 03:04:05 PM",            // DMY with text month, 12-hour
            "Jan 2, 2006 15:04:05",               // US-style text month
            "02-01-2006 15:04:05",                // DMY with dashes
    }

    loc, err := time.LoadLocation("Europe/Berlin") // or "America/New_York" for US
    if err != nil {
        loc = time.Local
    }

    var parseErr error
    for _, layout := range layouts {
        parsedTime, err := time.ParseInLocation(layout, datetime, loc)
        if err == nil {
            utcTime := parsedTime.UTC()
            return utcTime, strconv.FormatInt(utcTime.Unix(), 10), nil
        }
        parseErr = err
    }

    backend.Logger.Error("Date parsing failed", "datetime", datetime, "error", parseErr)
    return time.Time{}, "", fmt.Errorf("failed to parse time '%s': %w", datetime, parseErr)
}
###############################################################################################

mauroz7 · July 12, 2025, 1:59pm

Good morning, I managed to get the API to connect to my Grafana V10 server, but when I generate a query, I get the following error:
An unexpected error happened

I tried adding enable_loading_unsigned_plugins = maxmarkusprogram-prtg-datasource to the grafana.ini file and restarting the service, but the error persists.

Query

Time series

Panel options

Title

Description

Transparent background

Panel links

Repeat options

Tooltip

Tooltip mode

Legend

Visibility

Mode

Placement

Values

Select values or calculations to show in legend

Choose

Axis

Time zone

Default

Placement

Label

Width

Show grid lines

Color

Scale

Centered zero

Soft min

Soft max

Graph styles

Style

Line interpolation

Line width

010

Fill opacity

0100

Gradient mode

Line style

Connect null values

Show points

Point size

140

Stack series

Standard options

Unit

Min

Leave empty to calculate based on all values

Max

Leave empty to calculate based on all values

Decimals

Display name

Change the field or series name

Color scheme

Classic palette

No value

What to show when there is no value

Data links

Add link

Value mappings

Add value mappings

Thresholds

Add threshold

Thresholds mode

Percentage means thresholds relative to min & max

Show thresholds

Off

Add field override

muchelaguito · July 16, 2025, 12:11pm

Hey, I got it working in Windows. For some reason RH 9 keeps giving me a lot of errors with SELinux and at this point, I don’t have time to troubleshoot those. The one thing that I would like to request as a feature (unless it is something I am doing wrong) is the ability to perform queries in more than a single device/sensor. If I try, for example, to monitor the status of an entire group, it will not allow to use the “*” placeholder. I have a group of around 200 devices on the field that I would like to monitor in real time from Ping and HTTP sensors, and I have to add them one by one since I can’t monitor an entire group. Let me know if you need any logs or data that can be useful if you think this is a bug.

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