Disk space
ruudboon opened this issue · comments
Thank you for this awesome project. It runs smooth on my swarm. Only one thing doesn't work for me. The disk space always show N/A. Is there a way to debug this?
I think the mapping in the default dashboard is wrong.
sum(node_filesystem_size_bytes{mountpoint="/"} * on(instance) group_left(node_name) node_meta{node_id=~"$node_id"})
must be sum(node_filesystem_size_bytes{mountpoint="/rootfs"} * on(instance) group_left(node_name) node_meta{node_id=~"$node_id"})
because the mapping in the docker file is:
- /proc:/host/proc:ro - /sys:/host/sys:ro - /:/rootfs:ro
when I changed this I get useful data
I have two nodes currently and I experience the same problem with one of my nodes. For the other one both "/" and "/rootfs" show the same size:
| Element | Value |
|---|---|
| node_filesystem_size_bytes{device="/dev/mapper/iot--02--vg-root",fstype="ext4",instance="10.0.7.140:9100",job="node-exporter",mountpoint="/rootfs"} | 16586760192 |
| node_filesystem_size_bytes{device="/dev/sda1",fstype="ext2",instance="10.0.7.140:9100",job="node-exporter",mountpoint="/rootfs/boot"} | 246755328 |
| node_filesystem_size_bytes{device="/dev/sda1",fstype="ext4",instance="10.0.7.147:9100",job="node-exporter",mountpoint="/rootfs"} | 18888736768 |
| node_filesystem_size_bytes{device="none",fstype="aufs",instance="10.0.7.147:9100",job="node-exporter",mountpoint="/"} | 18888736768 |
It seems to be correct to switch the queries to mountpoint="/rootfs" as @mwolf1989 stated.