This Docker image is a repack of the original Prometheus Node exporter with the usual Homecentr bells and whistles.
version: "3.7"
services:
exporter:
build: .
image: homecentr/prometheus-node-exporter
restart: unless-stopped
environment:
NODE_ID: "myserver"
NODE_EXPORTER_ARGS: "--path.sysfs=/host/sys --path.procfs=/host/proc --collector.textfile.directory=/etc/node-exporter/ --collector.filesystem.ignored-mount-points=^/(sys|proc|dev|host|etc)($$|/) --no-collector.ipvs"
ports:
- 9100:9100
volumes:
- /proc:/host/proc:ro
- /sys:/host/sys:ro
- /:/rootfs:ro
- /etc/hostname:/etc/nodename| Name | Default value | Description |
|---|---|---|
| PUID | 7077 | UID of the user prometheus-node-exporter should be running as. |
| PGID | 7077 | GID of the user prometheus-node-exporter should be running as. |
| NODE_ID | Name of the node which should be used as metrics label | |
| NODE_EXPORTER_ARGS | Additional command line arguments passed to the Node exporter executable. Please check the documentation in the original project. |
| Port | Protocol | Description |
|---|---|---|
| 9100 | TCP | Metrics served over HTTP by the Node exporter |
This container does not expose any explicit volumes, but for correct function, you need to mount the host's /proc, /sys/ and / so the exporter can evaluate the host's state a report it in the metrics. These directories can be mounted pretty much anywhere, you just need to specify the same path in the NODE_EXPORTER_ARGS variable as shown in the example above.
The container is regularly scanned for vulnerabilities and updated. Further info can be found in the Security tab.
The container supports privilege drop. Even though the container starts as root, it will use the permissions only to perform the initial set up. The prometheus-node-exporter process runs as UID/GID provided in the PUID and PGID environment variables.
user Docker compose property or using the --user argument. This would break the privilege drop logic.