Docker run blocked when starting HTTP server

[Diak]

Hi,

I run the container as you describe it and all is ok only the HTTP server is not starting.
The logs when i run the container are :

INFO[0000] Starting openstack exporter version (version=1.0.0, branch=HEAD, revision=e6224ef4a069a9f7b0616ed4ee21bfc622382943) for cloud: horizon.dfp.ovh  source="main.go:47"
INFO[0000] Build context (go=go1.13.9, user=root@fd8bce58a223, date=20200327-21:44:22)  source="main.go:48"
...
INFO[0002] Adding metric: limits_vcpus_used to exporter: nova  source="exporter.go:132"
INFO[0002] Adding metric: limits_memory_max to exporter: nova  source="exporter.go:132"
INFO[0002] Adding metric: limits_memory_used to exporter: nova  source="exporter.go:132"
INFO[0002] Enabled exporter for service: compute         source="main.go:64"
INFO[0002] Adding metric: images to exporter: glance     source="exporter.go:132"
INFO[0002] Enabled exporter for service: image           source="main.go:64"
INFO[0002] Starting HTTP server on :9180                 source="main.go:88"

And it stays blocked at this line.

When i check the processes running i see the docker :
[xxx@xxx ~]# ps aux | grep openstack

cloud-u+ 30763  0.0  3.3 787196 63252 pts/0    Sl+  12:28   0:00 docker run -v /home/cloud-user/.config/openstack/clouds.yaml:/etc/openstack/clouds.yaml -it quay.io/niedbalski/openstack-exporter-linux-amd64:v1.0.0 horizon.dfp.ovh
root     30794  0.1  0.8 114156 15580 pts/0    Ssl+ 12:28   0:00 /bin/openstack-exporter horizon.dfp.ovh
root     30845  0.0  0.0 221900  1056 pts/1    S+   12:30   0:00 grep --color=auto openstack

When i check with netstat command (netstat -tanpu | grep LISTEN | grep 9180) i don't see 9180 port listening.

How can I check why the HTTP server is not starting plz ?

OS : RHEL 8.1
Docker version : 19.03.8, build afacb8b

[Diak]

Ok there was no problème. It's how docker run seems to work.
I used docker create et docker start with port forwarding and it works.
I close the issue.