43 lines
2.9 KiB
Nix
43 lines
2.9 KiB
Nix
{ lib,... }:
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let
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disk_free_threshold = "10"; # at least this much free disk percentage
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in {
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services.prometheus.rules = [(builtins.toJSON
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{
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groups = [
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{ name = "shack-env";
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rules = [
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{
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alert = "RootPartitionFull";
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for = "30m";
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expr = ''(node_filesystem_avail_bytes{alias="wolf",mountpoint="/"} * 100) / node_filesystem_size_bytes{alias="wolf",mountpoint="/"} < ${disk_free_threshold}'';
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labels.severity = "warning";
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annotations.summary = "{{ $labels.alias }} root disk full";
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annotations.url = "http://grafana.shack/";
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annotations.description = ''The root disk of {{ $labels.alias }} has {{ $value | printf "%.2f" }}% free disk space (Threshold at ${disk_free_threshold}%).A vast number of shackspace services will stop working. CI for deploying new configuration will also seize working. Log in to the system and run `nix-collect-garbage -d` and clean up the shack share folder in `/home/share` .If this does not help you can check `du -hs /var/ | sort -h`, run `docker system prune` or if you are really desperate run `du -hs / | sort -h` and go through the folders recursively until you've found something to delete'';
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}
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{
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alert = "RootPartitionFull";
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for = "30m";
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expr = ''(node_filesystem_avail_bytes{alias="puyak",mountpoint="/"} * 100) / node_filesystem_size_bytes{alias="puyak",mountpoint="/"} < ${disk_free_threshold}'';
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labels.severity = "warning";
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annotations.summary = "{{ $labels.alias }} root disk full";
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annotations.url = "http://grafana.shack/";
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annotations.description = ''The root disk of {{ $labels.alias }} has {{ $value | printf "%.2f" }}% free disk space (Threshold at ${disk_free_threshold}%).Prometheus will not be able to create new alerts and CI for deploying new configuration will also seize working. Log in to the system and run `nix-collect-garbage -d` and if this does not help you can check `du -hs /var/ | sort -h`, run `docker system prune` or if you are really desperate run `du -hs / | sort -h` and go through the folders recursively until you've found something to delete'';
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}
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{
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alert = "HostDown";
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expr = ''up{alias="wolf"} == 0'';
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for = "5m";
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labels.severity = "page";
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annotations.summary = "Instance {{ $labels.alias }} down for 5 minutes";
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annotations.url = "http://grafana.shack/";
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annotations.description = ''Host {{ $labels.alias }} went down and has not been reconnected after 5 minutes. This is probably bad news, try to restart the host via naproxen ( http://naproxen.shack:8006 ). Wolf being down means that CI,glados automation, light management and a couple of other services will not work anymore.'';
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}
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];
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}
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];
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}
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)];
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}
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