72 lines
2.6 KiB
Nix
72 lines
2.6 KiB
Nix
{ lib, pkgs, config, ... }:
|
|
{
|
|
services.grafana.provision.alerting.rules.settings.groups = [
|
|
{
|
|
name = "InodeUsageAlerts";
|
|
folder = "System Alerts";
|
|
interval = "1m";
|
|
|
|
rules = [
|
|
{
|
|
uid = "high-inode-usage-alert-uid";
|
|
title = "HighInodeUsage";
|
|
condition = "D"; # Condition is now D
|
|
|
|
data = [
|
|
# Query A: Calculate inode usage percentage
|
|
{
|
|
refId = "A";
|
|
datasourceUid = "vm-datasource-uid";
|
|
queryType = "prometheus";
|
|
relativeTimeRange = { from = 60; to = 0; };
|
|
model = {
|
|
expr = ''
|
|
(
|
|
node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""} - node_filesystem_files_free{fstype!~"tmpfs|rootfs",mountpoint!=""}
|
|
) / (node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""} > 0) * 100
|
|
and node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""}
|
|
and node_filesystem_files_free{fstype!~"tmpfs|rootfs",mountpoint!=""}
|
|
'';
|
|
legendFormat = "{{mountpoint}} on {{instance}}";
|
|
instant = false;
|
|
};
|
|
}
|
|
# Expression C: Reduce Query A to its last value, preserving labels
|
|
{
|
|
refId = "C";
|
|
datasourceUid = "__expr__";
|
|
model = {
|
|
type = "reduce";
|
|
expression = "A"; # Input is Query A
|
|
reducer = "last"; # Get the last value of each series in A
|
|
};
|
|
}
|
|
# Expression D: Apply math condition to the reduced values from C
|
|
{
|
|
refId = "D";
|
|
datasourceUid = "__expr__";
|
|
model = {
|
|
type = "math";
|
|
expression = "$C > 80"; # Alert if inode usage from C is > 80%
|
|
};
|
|
}
|
|
];
|
|
|
|
for = "30m"; # Duration the condition must be met
|
|
noDataState = "NoData";
|
|
execErrState = "Error";
|
|
|
|
annotations = {
|
|
summary = "High inode usage on {{ $labels.instance }} at {{ $labels.mountpoint }}";
|
|
description = ''Inode usage on {{ $labels.instance }} for mount point {{ $labels.mountpoint }} (fstype: {{ $labels.fstype }}) has been above 80% for more than 30 minutes. Current value: {{ if $values.C }}{{ $values.C | humanizePercentage }}{{ else }}N/A{{ end }}%.'';
|
|
};
|
|
labels = {
|
|
severity = "warning";
|
|
category = "capacity";
|
|
};
|
|
}
|
|
];
|
|
}
|
|
];
|
|
}
|