> does node exporter use the same method to collect the file system usage stats which the df command uses?
Essentially yes. But you can easily exclude <https://github.com/prometheus/node_exporter?tab=readme-ov-file#include--exclude-flags> certain filesystems and/or types of filesystem from collection. The below is picked up from an old machine, but I believe the flags won't have changed much: "--collector.filesystem.fs-types-exclude" is probably the one of most of interest to you. /usr/local/bin/node_exporter --web.config=/etc/prometheus/node_exporter_web_config.yaml --web.disable-exporter-metrics --collector.textfile.directory=/var/lib/node_exporter --collector.netdev.device-exclude=^(veth.+)$ --collector.netclass.ignored-devices=^(veth.+)$ --collector.diskstats.ignored-devices=^(ram|loop|fd|(h|s|v|xv)d[a-z]+|nvme[0-9]+n[0-9]+p)[0-9]+$ --collector.filesystem.fs-types-exclude=^(aufs|autofs|binfmt_misc|bpf|cgroup2?|configfs|debugfs|devpts|devtmpfs|fuse[.]glusterfs|fuse[.]lxcfs|fusectl|hugetlbfs|mqueue|nfs4?|nsfs|overlay|proc|procfs|pstore|rootfs|rpc_pipefs|securityfs|selinuxfs|squashfs|sysfs|tmpfs|tracefs)$ --collector.filesystem.mount-points-exclude=^/(dev|proc|sys|var/lib/docker|.*[.]zfs/snapshot)($|/) On Tuesday 23 July 2024 at 14:10:33 UTC+1 mohan garden wrote: > came across this query , seems data is collected when prometheus contacts > the node exporter during scrape. > https://groups.google.com/g/prometheus-users/c/h46MJjkEadQ > > This leaves me with just the following query , > does node exporter use the same method to collect the file system usage > stats which the df command uses? > > Regards, > - MG > > > On Tuesday, July 23, 2024 at 5:58:42 PM UTC+5:30 mohan garden wrote: > >> Hi All, >> We are running node exporter in our infra server and prometheus is able >> to scrape the reported data at 30 seconds scrape inverval. It appears that >> node exporter collects the df command's output, and we try to discourage >> the use of df command on the NFS . >> >> As we plan to reduce the impact of node exporter on the NFS metadata >> query , so wanted to understand that at what frequency does the node >> exporter collects the data. >> >> Was unable to figure out this information from node exporter's --help >> option. >> >> Please advice. >> >> Regards >> - MG >> >> >> -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/ca67af7d-064e-472d-b229-97b43dea8446n%40googlegroups.com.
