chaumes@prometheus-901:~$ curl -sS localhost:9100/metrics | grep node_filesystem_avail
# HELP node_filesystem_avail Filesystem space available to non-root users in bytes.
# TYPE node_filesystem_avail gauge
node_filesystem_avail{device="/dev/sda1",fstype="ext4",mountpoint="/"} 2.3620919296e+10
node_filesystem_avail{device="none",fstype="tmpfs",mountpoint="/run/lock"} 5.24288e+06
node_filesystem_avail{device="none",fstype="tmpfs",mountpoint="/run/shm"} 5.20429568e+08
node_filesystem_avail{device="none",fstype="tmpfs",mountpoint="/run/user"} 1.048576e+08
node_filesystem_avail{device="rpc_pipefs",fstype="rpc_pipefs",mountpoint="/run/rpc_pipefs"} 0
node_filesystem_avail{device="srv_salt",fstype="vboxsf",mountpoint="/srv/salt"} 4.1484754944e+11
node_filesystem_avail{device="tmpfs",fstype="tmpfs",mountpoint="/run"} 1.03616512e+08
node_filesystem_avail{device="vagrant",fstype="vboxsf",mountpoint="/vagrant"} 4.1484754944e+11