Grafana with https - Cannot find SSL cert_file

Grafana Configuration
1

I’m running Grafana in a Docker container on my NAS. Everything is fine when using http. However I fail to start the container when I setup Grafana for https, as the Certificate file can’t be found according to the Docker log.

I create a self-certificate using OpenSSL in order to use Grafana with https. I modified the docker script to overwrite the enviroment Server section for https and defined the path for the cert and key file.

  INFO[12-08|12:28:50] Config overridden from Environment variable logger=settings var="GF_SERVER_PROTOCOL=https"
  INFO[12-08|12:28:50] Config overridden from Environment variable logger=settings var="GF_SERVER_CERT_FILE=/share/CACHEDEV2_DATA/Container/grafana/config/ssl/grafana.crt"
  INFO[12-08|12:28:50] Config overridden from Environment variable logger=settings var="GF_SERVER_CERT_KEY=/share/CACHEDEV2_DATA/Container/grafana/config/ssl/grafana.key"

As far as I can see, this seems to be fine, however for unknown reason the cert-file isn’t found, even it is available in the defined path.

INFO[12-08|12:28:50] HTTP Server Listen                       logger=http.server address=0.0.0.0:3000 protocol=https subUrl= socket=
EROR[12-08|12:28:50] Stopped HTTPServer                       logger=server reason="Cannot find SSL cert_file at /share/CACHEDEV2_DATA/Container/grafana/config/ssl/grafana.crt"

When I check the path I see it is valid

[/share/CACHEDEV2_DATA/Container/grafana] # ls -l /share/CACHEDEV2_DATA/Container/grafana/config/ssl/grafana.crt
-rw-r--r-- 1 admin administrators 1228 2019-12-08 10:55 /share/CACHEDEV2_DATA/Container/grafana/config/ssl/grafana.crt

Any idea what could be the reason for this? Could the Certificate be invalid and the error message is just misleading?

Many thanks for a hint :slight_smile:

Stefan