Restrict Fstype for Disk Fill Alert about awesome-prometheus-alerts HOT 3 CLOSED

Should be better if we exclude this specific fstype:

predict_linear(node_filesystem_free_bytes{fstype!~"tmpfs"}[1h], 4 * 3600) < 0

from awesome-prometheus-alerts.

That's unfortunate. tmpfs is frequently used for directories which should be pruned on node reboot, but filling them up during operations can cause problems with system. A good example is a website which allows uploading files. By default webserver will use a temporary directory for storing uploaded chunks, which then will be copied as a file to a target directory. So if you fill up temporary dir, you should have alert as this won't allow for future uploads and impact site. Another example would be to have /var/log as tmpfs when you have a centralized log solution.
Those are the reasons why in official node_exporter mixins fstype is a configurable option and why hardcoded exclusion of tmpfs shouldn't be implemented.

from awesome-prometheus-alerts.

@xixipangma why not exclude that mountpoint from node_exporter with collector.filesystem.ignored-fs-types or collector.filesystem.ignored-mount-points?

from awesome-prometheus-alerts.