Krakend grafana dashoboard shows no data - grafana

Question

I am using krakend-ce 1.4 and influx 1.X
I have configured grafana dashboard and hoping to see dashboard panels for all the layers.
There are 4 layers as per dashboard.
Router
Proxy
Backend
System
I see router panels data is getting charted as expected. But for other panels I see empty charts. "No Data to show"
my configuration for krakend-metrics and influx modules is as follows:
"github_com/devopsfaith/krakend-metrics": {
"collection_time": "30s",
"proxy_disabled": false,
"router_disabled": false,
"backend_disabled": false,
"endpoint_disabled": false,
"listen_address": "127.0.0.1:8090"
},
"github_com/letgoapp/krakend-influx":{
"address":"http://influxdb-service:80",
"ttl":"25s",
"buffer_size":0,
"db": "krakend",
"username": "admin",
"password": "adminadmin"
}
I also added opencensus as follows:
"github_com/devopsfaith/krakend-opencensus": {
"sample_rate": 100,
"reporting_period": 1,
"enabled_layers": {
"backend": true,
"router": true,
"pipe": true
},
"influxdb": {
"address": "http://influxdb-service:80",
"db": "krakend",
"timeout": "1s",
"username": "admin",
"password": "adminadmin"
}
}
I thought may be my data is not ending up in influxDB, so I went in and checked what does it have. show measurements give me following output, and all measurements does have some data.
I am using grafana dashboard ID 5722. which is specified in docs.
how can I change my setup so that panels for proxy, backend and system shows charts?
__________________________
UPDATE
I upgrade krakend to version 2.1
Removed opencensus metrics exporter
Now using dashboard 15029 per krakend 2.1.2 documentation.
I still do not see other layer charts getting populated.
PS: I have checked what metrics are getting exposed on http://krakend-host:8090/__stats I see layer.backend and layer.pipe metrics.
__________________________
UPDATE 2
I was also checking for other available dashboards which can work. I stumbled upon this one https://github.com/letgoapp/krakend-influx/blob/master/examples/grafana-dashboard.json
I see 2 more panels showing up. but not all of them.

Answer 1

kale
If you want to use the Grafana dashboards published by KrakenD they work with only with the native InfluxDB exporter (github_com/letgoapp/krakend-influx) and NOT with the OpenCensus one.
You should delete the github_com/devopsfaith/krakend-opencensus configuration block, otherwise, you have KrakenD reporting the same metrics in different measurements twice.
The influxdb port is usually http://influxdb-service:8086, but you show port 80 in the settings, make sure these are not old data. If you have changed the port it's fine.
Another thing you have to check is if the InfluxDB client is started during KrakenD startup (there is a line in the logs telling about it), old versions had a random bug that prevented the metrics from being sent.
Finally, the maintained dashboard is now 15029 for the InfluxDB v1. Try to use that one.
There have been several improvements in metrics and in KrakenD in general system, I would avoid staying with the old 1.4 being the transition as simple as it is (but this is another topic)
Hope this helps

Answer 2

After hours of debugging, I finally found the solution. Key here to note is If your configurations are correct, you should see data showing up in influxDB. First, make sure that you see data in influxDB. In my case, this was correct.
Like I mentioned in the second update to the question, I see some more panels getting populated when I used the dashboard from https://github.com/letgoapp/krakend-influx/blob/master/examples/grafana-dashboard.json
This was a huge lead. Later I went on to compare the specific JSON blocks within the working dashboard and the one which was missing some charts. I realized all of those panels had "datasource": null. And the ones which were working had the "datasource": "InfluxDB",
I updated the JSON definition of dashboard and viola !! All the panels started showing the charts.
PS: If you see any datasource as null, or which does not correspond to your influx DB datasource, you should update it to use influx db data source which is defined in the datasources section on the admin panel.