Use different network interface about dockprom HOT 5 CLOSED

A big part of the reason this doesn't work is that /proc/net/dev inside a container will only show the container-local devices, even if it's mounted (it probably has to do with /proc/net being a symlink to /proc/self/net, which in turn goes by the current PID).
Using network_mode: host means prometheus config needs to be changed.

Here's an easier way, seeing as we already have cadvisor set up: In grafana, use the following queries:

sum(rate(container_network_receive_bytes_total{id="/",interface!~"br.*|lo"}[1m]))
sum(rate(container_network_transmit_bytes_total{id="/",interface!~"br.*|lo"}[1m]))

Alternatively, use interface="eno1" for your specific case (and then you can drop the external sum).

from dockprom.

In the docker-compose.yml, change the following.

 ports:
   - 9090:9090

to

    ports:
      - "192.168.0.1:9090:9090"

So specify the IP of the interface you wish your containers to bind to.

    ports:
      - "<YOUR enp1s0fo IP>9090:9090"

hope that helped

kind regards.

from dockprom.

The fix isn't working. The Network Usage graphs of "Docker Host" in grafana doesn't show any traffic update. Please help.

from dockprom.

There's two elements that need to change to achieve this.
The default docker-compose.yml monitors the ethernet interface of the node_exporter instance (which isn't your host).

Alternatively you could run the node_exporter instance in the docker-compose.exporters.yml file:

nodeexporter:
    image: prom/node-exporter:v0.17.0
    container_name: nodeexporter
    user: root
    privileged: true
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /:/rootfs:ro
    command:
      - '--path.procfs=/host/proc'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/)'
    restart: unless-stopped
    ports:
      - 9100:9100
    network_mode: host
    labels:
      org.label-schema.group: "monitoring"

Or modify your default docker-compose.yml to reflect the host interface like such:

nodeexporter:
    image: prom/node-exporter:v0.17.0
    container_name: nodeexporter
    user: root
    privileged: true
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /:/rootfs:ro
    command:
      - '--path.procfs=/host/proc'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/)'
    restart: unless-stopped
    expose:
      - 9100
    network_mode: host
    labels:
      org.label-schema.group: "monitoring"

After this change you then need to modify your Docker Host Grafana dashboard to reflect the actual ethernet interface on your host. For example mine is eno1 so the following:

• irate(node_network_receive_bytes_total{device="eth0"}[1m])
• irate(node_network_transmit_bytes_total{device="eth0"}[1m])

Should read:

• irate(node_network_receive_bytes_total{device="eno1"}[1m])
• irate(node_network_transmit_bytes_total{device="eno1"}[1m])

from dockprom.

lutzky solution works for me and is super easy.

Any reason Why its not incorporated in to the project?

from dockprom.