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-rw-r--r--krebs/2configs/shack/prometheus/alert-rules.nix102
-rw-r--r--krebs/2configs/shack/prometheus/server.nix90
-rw-r--r--krebs/2configs/shack/ssh-keys.nix10
3 files changed, 118 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";
diff --git a/krebs/2configs/shack/ssh-keys.nix b/krebs/2configs/shack/ssh-keys.nix
new file mode 100644
index 000000000..9c7f507f1
--- /dev/null
+++ b/krebs/2configs/shack/ssh-keys.nix
@@ -0,0 +1,10 @@
+{ config, ... }:
+{
+ users.users.root.openssh.authorizedKeys.keys = [
+ config.krebs.users."0x4A6F".pubkey
+ config.krebs.users.ulrich.pubkey
+ config.krebs.users.raute.pubkey
+ "ssh-rsa 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 root@plattenschwein" # for backup
+ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC1Lx5MKtVjB/Ef6LpEiIAgVwY5xKQFdHuLQR+odQO4cAgxj1QaIXGN0moixY52DebVQhAtiCNiFZ83uJyOj8kmu30yuXwtSOQeqziA859qMJKZ4ZcYdKvbXwnf2Chm5Ck/0FvtpjTWHIZAogwP1wQto/lcqHOjrTAnZeJfQuHTswYUSnmUU5zdsEZ9HidDPUc2Gv0wkBNd+KMQyOZl0HkaxHWvn0h4KK4hYZisOpeTfXJxD87bo+Eg4LL2vvnHW6dF6Ygrbd/0XRMsRRI8OAReVBUoJn7IE1wwAl/FpblNmhaF9hlL7g7hR1ADvaWMMw0e8SSzW6Y+oIa8qFQL6wR1 gitlab-builder" # for being deployed by gitlab ci
+ ];
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 21:47:53 +0000