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-rw-r--r--krebs/2configs/shack/prometheus/alert-rules.nix102
-rw-r--r--krebs/2configs/shack/prometheus/server.nix90
2 files changed, 108 insertions, 84 deletions
diff --git a/krebs/2configs/shack/prometheus/alert-rules.nix b/krebs/2configs/shack/prometheus/alert-rules.nix
new file mode 100644
index 000000000..096c551ba
--- /dev/null
+++ b/krebs/2configs/shack/prometheus/alert-rules.nix
@@ -0,0 +1,102 @@
+{ lib }:
+with lib;
+
+let
+ deviceFilter = ''device!="ramfs",device!="rpc_pipefs",device!="lxcfs",device!="nsfs",device!="borgfs"'';
+in mapAttrsToList (name: opts: {
+ alert = name;
+ expr = opts.condition;
+ for = opts.time or "2m";
+ labels = if (opts.page or true) then { severity = "page"; } else {};
+ annotations = {
+ summary = opts.summary;
+ description = opts.description;
+ };
+}) {
+ node_down = {
+ condition = ''up{job="node"} == 0'';
+ summary = "{{$labels.alias}}: Node is down.";
+ description = "{{$labels.alias}} has been down for more than 2 minutes.";
+ };
+ node_systemd_service_failed = {
+ condition = ''node_systemd_unit_state{state="failed"} == 1'';
+ summary = "{{$labels.alias}}: Service {{$labels.name}} failed to start.";
+ description = "{{$labels.alias}} failed to (re)start service {{$labels.name}}.";
+ };
+ node_filesystem_full_80percent = {
+ condition = ''sort(node_filesystem_free_bytes{${deviceFilter}} < node_filesystem_size_bytes{${deviceFilter}} * 0.2) / 1024^3'';
+ time = "10m";
+ summary = "{{$labels.alias}}: Filesystem is running out of space soon.";
+ description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 20% space left on its filesystem.";
+ };
+ node_filesystem_full_in_7d = {
+ condition = ''predict_linear(node_filesystem_free_bytes{${deviceFilter}}[2d], 7*24*3600) <= 0'';
+ time = "1h";
+ summary = "{{$labels.alias}}: Filesystem is running out of space in 7 days.";
+ description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} is running out of space of in approx. 7 days";
+ };
+ node_filesystem_full_in_30d = {
+ condition = ''predict_linear(node_filesystem_free_bytes{${deviceFilter}}[30d], 30*24*3600) <= 0'';
+ time = "1h";
+ summary = "{{$labels.alias}}: Filesystem is running out of space in 30 days.";
+ description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} is running out of space of in approx. 30 days";
+ };
+ node_filedescriptors_full_in_3h = {
+ condition = ''predict_linear(node_filefd_allocated[3h], 3*3600) >= node_filefd_maximum'';
+ time = "20m";
+ summary = "{{$labels.alias}} is running out of available file descriptors in 3 hours.";
+ description = "{{$labels.alias}} is running out of available file descriptors in approx. 3 hours";
+ };
+ node_filedescriptors_full_in_7d = {
+ condition = ''predict_linear(node_filefd_allocated[7d], 7*24*3600) >= node_filefd_maximum'';
+ time = "1h";
+ summary = "{{$labels.alias}} is running out of available file descriptors in 7 days.";
+ description = "{{$labels.alias}} is running out of available file descriptors in approx. 7 days";
+ };
+ node_load15 = {
+ condition = ''node_load15 / on(alias) count(node_cpu_seconds_total{mode="system"}) by (alias) >= 1.0'';
+ time = "10m";
+ summary = "{{$labels.alias}}: Running on high load: {{$value}}";
+ description = "{{$labels.alias}} is running with load15 > 1 for at least 5 minutes: {{$value}}";
+ };
+ node_ram_using_90percent = {
+ condition = "node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes < node_memory_MemTotal_bytes * 0.1";
+ time = "1h";
+ summary = "{{$labels.alias}}: Using lots of RAM.";
+ description = "{{$labels.alias}} is using at least 90% of its RAM for at least 1 hour.";
+ };
+ node_swap_using_30percent = {
+ condition = "node_memory_SwapTotal_bytes - (node_memory_SwapFree_bytes + node_memory_SwapCached_bytes) > node_memory_SwapTotal_bytes * 0.3";
+ time = "30m";
+ summary = "{{$labels.alias}}: Using more than 30% of its swap.";
+ description = "{{$labels.alias}} is using 30% of its swap space for at least 30 minutes.";
+ };
+ node_visible_confluence_space = {
+ condition = "node_visible_confluence_space != 0";
+ summary = "crowd prometheus cann see the {{$labels.space_name}} confluence space!";
+ description = "crowd user `prometheus` can see the `{{$labels.space_name}}` confluence space.";
+ };
+ node_hwmon_temp = {
+ condition = "node_hwmon_temp_celsius > node_hwmon_temp_crit_celsius*0.9 OR node_hwmon_temp_celsius > node_hwmon_temp_max_celsius*0.95";
+ time = "5m";
+ summary = "{{$labels.alias}}: Sensor {{$labels.sensor}}/{{$labels.chip}} temp is high: {{$value}} ";
+ description = "{{$labels.alias}} reports hwmon sensor {{$labels.sensor}}/{{$labels.chip}} temperature value is nearly critical: {{$value}}";
+ };
+ node_conntrack_limit = {
+ condition = "node_nf_conntrack_entries_limit - node_nf_conntrack_entries < 1000";
+ time = "5m";
+ summary = "{{$labels.alias}}: Number of tracked connections high";
+ description = "{{$labels.alias}} has only {{$value}} free slots for connection tracking available.";
+ };
+ node_reboot = {
+ condition = "time() - node_boot_time_seconds < 300";
+ summary = "{{$labels.alias}}: Reboot";
+ description = "{{$labels.alias}} just rebooted.";
+ };
+ node_uptime = {
+ condition = "time() - node_boot_time_seconds > 2592000";
+ page = false;
+ summary = "{{$labels.alias}}: Uptime monster";
+ description = "{{$labels.alias}} has been up for more than 30 days.";
+ };
+}
diff --git a/krebs/2configs/shack/prometheus/server.nix b/krebs/2configs/shack/prometheus/server.nix
index 7f6f38610..f5d2e7640 100644
--- a/krebs/2configs/shack/prometheus/server.nix
+++ b/krebs/2configs/shack/prometheus/server.nix
@@ -28,90 +28,12 @@
"-storage.local.index-cache-size.label-name-to-label-values 2097152"
"-storage.local.index-cache-size.label-pair-to-fingerprints 41943040"
];
- rules = [
- ''
- ALERT node_down
- IF up == 0
- FOR 5m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: Node is down.",
- description = "{{$labels.alias}} has been down for more than 5 minutes."
- }
- ALERT node_systemd_service_failed
- IF node_systemd_unit_state{state="failed"} == 1
- FOR 4m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: Service {{$labels.name}} failed to start.",
- description = "{{$labels.alias}} failed to (re)start service {{$labels.name}}."
- }
- ALERT node_filesystem_full_90percent
- IF sort(node_filesystem_free{device!="ramfs"} < node_filesystem_size{device!="ramfs"} * 0.1) / 1024^3
- FOR 5m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: Filesystem is running out of space soon.",
- description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 10% space left on its filesystem."
- }
- ALERT node_filesystem_full_in_4h
- IF predict_linear(node_filesystem_free{device!="ramfs"}[1h], 4*3600) <= 0
- FOR 5m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: Filesystem is running out of space in 4 hours.",
- description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} is running out of space of in approx. 4 hours"
- }
- ALERT node_filedescriptors_full_in_3h
- IF predict_linear(node_filefd_allocated[1h], 3*3600) >= node_filefd_maximum
- FOR 20m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}} is running out of available file descriptors in 3 hours.",
- description = "{{$labels.alias}} is running out of available file descriptors in approx. 3 hours"
- }
- ALERT node_load1_90percent
- IF node_load1 / on(alias) count(node_cpu{mode="system"}) by (alias) >= 0.9
- FOR 1h
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: Running on high load.",
- description = "{{$labels.alias}} is running with > 90% total load for at least 1h."
- }
- ALERT node_cpu_util_90percent
- IF 100 - (avg by (alias) (irate(node_cpu{mode="idle"}[5m])) * 100) >= 90
- FOR 1h
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary = "{{$labels.alias}}: High CPU utilization.",
- description = "{{$labels.alias}} has total CPU utilization over 90% for at least 1h."
- }
- ALERT node_ram_using_90percent
- IF node_memory_MemFree + node_memory_Buffers + node_memory_Cached < node_memory_MemTotal * 0.1
- FOR 30m
- LABELS {
- severity="page"
- }
- ANNOTATIONS {
- summary="{{$labels.alias}}: Using lots of RAM.",
- description="{{$labels.alias}} is using at least 90% of its RAM for at least 30 minutes now.",
- }
- ''
- ];
+ ruleFiles = lib.singleton (pkgs.writeText "prometheus-rules.yml" (builtins.toJSON {
+ groups = lib.singleton {
+ name = "mf-alerting-rules";
+ rules = import ./alert-rules.nix { inherit lib; };
+ };
+ }));
scrapeConfigs = [
{
job_name = "node";
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 00:50:50 +0000