Dominik Polakovics
b6b90bca7d
- Deleted individual alert files for host down, inode usage, and RAM usage. - Merged service down alerts into a new structure with separate files for each service (Gitea, Postfix, Dovecot, OpenLDAP, WireGuard). - Introduced a new system alert structure consolidating CPU, disk, host down, inode, and RAM usage alerts. - Updated alert conditions to use 'D' for thresholds and adjusted expressions accordingly. - Improved annotations and labels for clarity and consistency across alerts.
64 lines
2.2 KiB
Nix
64 lines
2.2 KiB
Nix
{ lib, pkgs, config, ... }:
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{
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grafanaAlertRuleDefinitions = [
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{
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uid = "high-inode-usage-alert-uid";
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title = "HighInodeUsage";
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condition = "D"; # Condition is now D
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data = [
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# Query A: Calculate inode usage percentage
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{
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refId = "A";
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datasourceUid = "vm-datasource-uid";
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queryType = "prometheus";
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relativeTimeRange = { from = 60; to = 0; };
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model = {
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expr = ''
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(
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node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""} - node_filesystem_files_free{fstype!~"tmpfs|rootfs",mountpoint!=""}
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) / (node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""} > 0) * 100
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and node_filesystem_files{fstype!~"tmpfs|rootfs",mountpoint!=""}
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and node_filesystem_files_free{fstype!~"tmpfs|rootfs",mountpoint!=""}
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'';
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legendFormat = "{{mountpoint}} on {{instance}}";
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instant = false;
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};
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}
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# Expression C: Reduce Query A to its last value, preserving labels
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{
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refId = "C";
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datasourceUid = "__expr__";
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model = {
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type = "reduce";
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expression = "A"; # Input is Query A
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reducer = "last"; # Get the last value of each series in A
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};
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}
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# Expression D: Apply math condition to the reduced values from C
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{
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refId = "D";
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datasourceUid = "__expr__";
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model = {
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type = "math";
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expression = "$C > 80"; # Alert if inode usage from C is > 80%
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};
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}
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];
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for = "30m"; # Duration the condition must be met
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noDataState = "NoData";
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execErrState = "Error";
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annotations = {
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summary = "High inode usage on {{ $labels.instance }} at {{ $labels.mountpoint }}";
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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 }}%.'';
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};
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labels = {
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severity = "warning";
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category = "capacity";
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};
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}
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];
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}
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