reformat

configs/wallpaper.nix

@@ -17,11 +17,7 @@ in {
       chmod o+rx ${stateDir}
       cd ${stateDir}
       (${pkgs.curl}/bin/curl -s -o wallpaper.tmp -z wallpaper.tmp ${lib.escapeShellArg url} && cp wallpaper.tmp wallpaper) || :
-      if [ -z $SWAYSOCK ]; then
+      ${pkgs.feh}/bin/feh --no-fehbg --bg-scale wallpaper
-        ${pkgs.feh}/bin/feh --no-fehbg --bg-scale wallpaper
-      else
-        ${pkgs.sway}/bin/swaymsg -s $SWAYSOCK 'output * bg ${stateDir}/wallpaper fill'
-      fi
     '';
     startAt = "*:00,10,20,30,40,50";
     serviceConfig = {

systems/makanek/monitoring/default.nix

@@ -3,11 +3,13 @@
   config,
   pkgs,
   ...
-}: let
+}:
+let
   lokiConfig = import ./loki.nix;
   blackboxConfig = import ./blackbox.nix;
   inherit (import ../../../lib) restic;
-in {
+in
+{
   services.grafana = {
     enable = true;
     settings = {
@@ -80,143 +82,150 @@ in {
     }
   ];
 
-  services.prometheus.rules = let
+  services.prometheus.rules =
-    diskFreeThreshold = 10;
+    let
-  in [
+      diskFreeThreshold = 10;
-    (builtins.toJSON {
+    in
-      groups = [
+    [
-        {
+      (builtins.toJSON {
-          name = "niveum";
+        groups = [
-          rules = [
+          {
-            {
+            name = "niveum";
-              alert = "HostSystemdServiceCrashed";
+            rules = [
-              expr = ''(node_systemd_unit_state{state="failed"} == 1) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}'';
+              {
-              annotations = {
+                alert = "HostSystemdServiceCrashed";
-                description = "{{$labels.name}} failed on {{$labels.instance}}";
+                expr = ''(node_systemd_unit_state{state="failed"} == 1) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}'';
-              };
+                annotations = {
-            }
+                  description = "{{$labels.name}} failed on {{$labels.instance}}";
-            {
+                };
-              alert = "RootPartitionFull";
+              }
-              for = "10m";
+              {
-              expr = ''(node_filesystem_free_bytes{mountpoint="/"} * 100) / node_filesystem_size_bytes{mountpoint="/"} < ${toString diskFreeThreshold}'';
+                alert = "RootPartitionFull";
-              annotations = {
+                for = "10m";
-                description = ''{{ $labels.instance }} running out of space: {{ $value | printf "%.2f" }}% < ${toString diskFreeThreshold}%'';
+                expr = ''(node_filesystem_free_bytes{mountpoint="/"} * 100) / node_filesystem_size_bytes{mountpoint="/"} < ${toString diskFreeThreshold}'';
-              };
+                annotations = {
-            }
+                  description = ''{{ $labels.instance }} running out of space: {{ $value | printf "%.2f" }}% < ${toString diskFreeThreshold}%'';
-            {
+                };
-              alert = "RootPartitionFullWeek";
+              }
-              for = "1h";
+              {
-              expr =
+                alert = "RootPartitionFullWeek";
-                ''node_filesystem_free_bytes{mountpoint="/"} ''
+                for = "1h";
-                + ''and predict_linear(node_filesystem_free_bytes{mountpoint="/"}[2d], 7*24*3600) <= 0'';
+                expr =
-              annotations = {
+                  ''node_filesystem_free_bytes{mountpoint="/"} ''
-                description = "{{$labels.instance}} running out of space in 7 days";
+                  + ''and predict_linear(node_filesystem_free_bytes{mountpoint="/"}[2d], 7*24*3600) <= 0'';
-              };
+                annotations = {
-            }
+                  description = "{{$labels.instance}} running out of space in 7 days";
-            {
+                };
-              alert = "HighLoad";
+              }
-              expr = ''node_load15 / on(job) count(node_cpu_seconds_total{mode="system"}) by (job) >= 1.0'';
+              {
-              for = "10m";
+                alert = "HighLoad";
-              annotations = {
+                expr = ''node_load15 / on(job) count(node_cpu_seconds_total{mode="system"}) by (job) >= 1.0'';
-                description = "{{$labels.instance}} running on high load: {{$value}}";
+                for = "10m";
-              };
+                annotations = {
-            }
+                  description = "{{$labels.instance}} running on high load: {{$value}}";
-            {
+                };
-              alert = "HostUnusualNetworkThroughputIn";
+              }
-              expr = ''(rate(node_network_receive_bytes_total[2m])) / 1024 / 1024 > 100'';
+              {
-              for = "5m";
+                alert = "HostUnusualNetworkThroughputIn";
-              annotations.description = "Host unusual network throughput in (instance {{ $labels.instance }})";
+                expr = ''(rate(node_network_receive_bytes_total[2m])) / 1024 / 1024 > 100'';
-            }
+                for = "5m";
-            {
+                annotations.description = "Host unusual network throughput in (instance {{ $labels.instance }})";
-              alert = "HostUnusualNetworkThroughputOut";
+              }
-              expr = ''(rate(node_network_transmit_bytes_total[2m])) / 1024 / 1024 > 100'';
+              {
-              for = "5m";
+                alert = "HostUnusualNetworkThroughputOut";
-              annotations.description = "Host unusual network throughput out (instance {{ $labels.instance }})";
+                expr = ''(rate(node_network_transmit_bytes_total[2m])) / 1024 / 1024 > 100'';
-            }
+                for = "5m";
-            {
+                annotations.description = "Host unusual network throughput out (instance {{ $labels.instance }})";
-              alert = "HostUnusualDiskReadRate";
+              }
-              expr = ''(rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50'';
+              {
-              for = "5m";
+                alert = "HostUnusualDiskReadRate";
-              annotations.description = "Host unusual disk read rate (instance {{ $labels.instance }})";
+                expr = ''(rate(node_disk_read_bytes_total[2m])) / 1024 / 1024 > 50'';
-            }
+                for = "5m";
-            {
+                annotations.description = "Host unusual disk read rate (instance {{ $labels.instance }})";
-              alert = "HostUnusualDiskWriteRate";
+              }
-              expr = ''(rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50'';
+              {
-              for = "2m";
+                alert = "HostUnusualDiskWriteRate";
-              annotations.description = "Host unusual disk write rate (instance {{ $labels.instance }})";
+                expr = ''(rate(node_disk_written_bytes_total[2m])) / 1024 / 1024 > 50'';
-            }
+                for = "2m";
-            {
+                annotations.description = "Host unusual disk write rate (instance {{ $labels.instance }})";
-              alert = "HostOutOfInodes";
+              }
-              expr = ''node_filesystem_files_free{fstype!="msdosfs"} / node_filesystem_files{fstype!="msdosfs"} * 100 < 10 and ON (instance, device, mountpoint) node_filesystem_readonly == 0'';
+              {
-              for = "2m";
+                alert = "HostOutOfInodes";
-              annotations.description = "Host out of inodes (instance {{ $labels.instance }})";
+                expr = ''node_filesystem_files_free{fstype!="msdosfs"} / node_filesystem_files{fstype!="msdosfs"} * 100 < 10 and ON (instance, device, mountpoint) node_filesystem_readonly == 0'';
-            }
+                for = "2m";
-            {
+                annotations.description = "Host out of inodes (instance {{ $labels.instance }})";
-              alert = "HostInodesWillFillIn24Hours";
+              }
-              expr = ''node_filesystem_files_free{fstype!="msdosfs"} / node_filesystem_files{fstype!="msdosfs"} * 100 < 10 and predict_linear(node_filesystem_files_free{fstype!="msdosfs"}[1h], 24 * 3600) < 0 and ON (instance, device, mountpoint) node_filesystem_readonly{fstype!="msdosfs"} == 0'';
+              {
-              for = "2m";
+                alert = "HostInodesWillFillIn24Hours";
-              annotations.description = "Host inodes will fill in 24 hours (instance {{ $labels.instance }})";
+                expr = ''node_filesystem_files_free{fstype!="msdosfs"} / node_filesystem_files{fstype!="msdosfs"} * 100 < 10 and predict_linear(node_filesystem_files_free{fstype!="msdosfs"}[1h], 24 * 3600) < 0 and ON (instance, device, mountpoint) node_filesystem_readonly{fstype!="msdosfs"} == 0'';
-            }
+                for = "2m";
-            {
+                annotations.description = "Host inodes will fill in 24 hours (instance {{ $labels.instance }})";
-              alert = "HighRAM";
+              }
-              expr = "node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes < node_memory_MemTotal_bytes * 0.1";
+              {
-              for = "1h";
+                alert = "HighRAM";
-              annotations.description = "{{$labels.instance}} using lots of RAM";
+                expr = "node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes < node_memory_MemTotal_bytes * 0.1";
-            }
+                for = "1h";
-            {
+                annotations.description = "{{$labels.instance}} using lots of RAM";
-              alert = "UptimeMonster";
+              }
-              expr = "time() - node_boot_time_seconds > 2592000";
+              {
-              annotations.description = "uptime monster {{$labels.instance}} up for more than 30 days";
+                alert = "UptimeMonster";
-            }
+                expr = "time() - node_boot_time_seconds > 2592000";
-            {
+                annotations.description = "uptime monster {{$labels.instance}} up for more than 30 days";
-              alert = "HostDown";
+              }
-              expr = ''up == 0'';
+              {
-              for = "5m";
+                alert = "HostDown";
-              annotations = {
+                expr = ''up == 0'';
-                description = "{{ $labels.instance }} seeming down since 5 minutes";
+                for = "5m";
-              };
+                annotations = {
-            }
+                  description = "{{ $labels.instance }} seeming down since 5 minutes";
-            {
+                };
-              alert = "Reboot";
+              }
-              expr = "time() - node_boot_time_seconds < 300";
+              {
-              annotations.description = "{{$labels.instance}} rebooted";
+                alert = "Reboot";
-            }
+                expr = "time() - node_boot_time_seconds < 300";
-            {
+                annotations.description = "{{$labels.instance}} rebooted";
-              alert = "ProbeFailed";
+              }
-              expr = "probe_success == 0";
+              {
-              for = "5m";
+                alert = "Mastodon";
-              annotations.description = "HTTP probe failed for {{$labels.instance}}";
+                expr = ''probe_success{instance="https://social.krebsco.de"}'';
-            }
+                for = "5m";
-            {
+                annotations.description = "Mastodon instance {{$labels.instance}} is down";
-              alert = "SlowProbe";
+              }
-              expr = "avg_over_time(probe_http_duration_seconds[1m]) > 1";
+              {
-              for = "5m";
+                alert = "ProbeFailed";
-              annotations.description = "HTTP probe slow for {{$labels.instance}}";
+                expr = "probe_success == 0";
-            }
+                for = "5m";
-            {
+                annotations.description = "HTTP probe failed for {{$labels.instance}}";
-              alert = "HttpStatusCode";
+              }
-              expr = "probe_http_status_code != 0 AND (probe_http_status_code <= 199 OR probe_http_status_code >= 400)";
+              {
-              for = "5m";
+                alert = "SlowProbe";
-              annotations.description = "status code {{$value}} for {{$labels.instance}}";
+                expr = "avg_over_time(probe_http_duration_seconds[1m]) > 1";
-            }
+                for = "5m";
-            {
+                annotations.description = "HTTP probe slow for {{$labels.instance}}";
-              alert = "SslExpirySoon";
+              }
-              expr = "probe_ssl_earliest_cert_expiry - time() < 86400 * 30";
+              {
-              for = "5m";
+                alert = "HttpStatusCode";
-              annotations.description = "SSL certificate for {{$labels.instance}} expires in 30 days";
+                expr = "probe_http_status_code != 0 AND (probe_http_status_code <= 199 OR probe_http_status_code >= 400)";
-            }
+                for = "5m";
-            {
+                annotations.description = "status code {{$value}} for {{$labels.instance}}";
-              alert = "SslExpiry";
+              }
-              expr = "probe_ssl_earliest_cert_expiry - time()  <= 0";
+              {
-              for = "5m";
+                alert = "SslExpirySoon";
-              annotations.description = "SSL certificate for {{$labels.instance}} has expired";
+                expr = "probe_ssl_earliest_cert_expiry - time() < 86400 * 30";
-            }
+                for = "5m";
-          ];
+                annotations.description = "SSL certificate for {{$labels.instance}} expires in 30 days";
-        }
+              }
-      ];
+              {
-    })
+                alert = "SslExpiry";
-  ];
+                expr = "probe_ssl_earliest_cert_expiry - time()  <= 0";
-
+                for = "5m";
+                annotations.description = "SSL certificate for {{$labels.instance}} has expired";
+              }
+            ];
+          }
+        ];
+      })
+    ];
 
   # ref https://github.com/Mic92/dotfiles/blob/f44bac5dd6970ed3fbb4feb906917331ec3c2be5/machines/eva/modules/prometheus/default.nix
   systemd.services.matrix-hook = {
@@ -246,6 +255,33 @@ in {
     };
   };
 
+  systemd.services.matrix-hook-lassulus = {
+    description = "Matrix Hook";
+    after = [ "network.target" ];
+    wantedBy = [ "multi-user.target" ];
+    environment = {
+      HTTP_ADDRESS = "[::1]";
+      HTTP_PORT = "9089";
+      MX_HOMESERVER = "https://matrix.4d2.org";
+      MX_ID = "@lakai:4d2.org";
+      MX_ROOMID = "!MJAGqBAOKZGMywzwkI:lassul.us";
+      MX_MSG_TEMPLATE = "${pkgs.matrix-hook}/message.html.tmpl";
+    };
+    serviceConfig = {
+      EnvironmentFile = [
+        # format: MX_TOKEN=<token>
+        config.age.secrets.matrix-token-lakai-env.path
+      ];
+      Type = "simple";
+      ExecStart = "${pkgs.matrix-hook}/bin/matrix-hook";
+      Restart = "always";
+      RestartSec = "10";
+      DynamicUser = true;
+      User = "matrix-hook";
+      Group = "matrix-hook";
+    };
+  };
+
   age.secrets = {
     matrix-token-lakai-env.file = ../../../secrets/matrix-token-lakai-env.age;
   };
@@ -260,8 +296,23 @@ in {
         group_wait = "30s";
         repeat_interval = "24h";
         receiver = "matrix";
+        routes = [
+          {
+            receiver = "lassulus";
+            matchers = [ "alertname = \"Mastodon\"" ];
+          }
+        ];
       };
       receivers = [
+        {
+          name = "lassulus";
+          webhook_configs = [
+            {
+              url = "http://localhost:9089/alert";
+              max_alerts = 5;
+            }
+          ];
+        }
         {
           name = "matrix";
           webhook_configs = [
@@ -306,13 +357,21 @@ in {
     {
       scheme = "http";
       path_prefix = "/";
-      static_configs = [{targets = ["localhost:${toString config.services.prometheus.alertmanager.port}"];}];
+      static_configs = [
+        { targets = [ "localhost:${toString config.services.prometheus.alertmanager.port}" ]; }
+      ];
     }
   ];
 
   # otherwise bearer_token_file will fail
   services.prometheus.checkConfig = "syntax-only";
 
+  services.prometheus.extraFlags = [
+    "--storage.tsdb.retention.time=7d"
+    "--storage.tsdb.retention.size=2GB"
+    "--storage.tsdb.wal-compression"
+  ];
+
   services.prometheus.scrapeConfigs = [
     {
       job_name = "makanek";
@@ -328,14 +387,14 @@ in {
       scrape_interval = "5m";
       job_name = "blackbox";
       metrics_path = "/probe";
-      params.module = ["http_2xx"];
+      params.module = [ "http_2xx" ];
       relabel_configs = [
         {
-          source_labels = ["__address__"];
+          source_labels = [ "__address__" ];
           target_label = "__param_target";
         }
         {
-          source_labels = ["__param_target"];
+          source_labels = [ "__param_target" ];
           target_label = "instance";
         }
         {
@@ -393,7 +452,7 @@ in {
       scrape_interval = "60s";
       metrics_path = "/api/prometheus";
       scheme = "http";
-      static_configs = [{targets = ["zaatar.r:8123"];}];
+      static_configs = [ { targets = [ "zaatar.r:8123" ]; } ];
       bearer_token_file = config.age.secrets.home-assistant-token.path;
     }
     {
@@ -410,7 +469,7 @@ in {
 
   services.prometheus.exporters.blackbox = {
     enable = true;
-    configFile = (pkgs.formats.yaml {}).generate "blackbox.yaml" blackboxConfig;
+    configFile = (pkgs.formats.yaml { }).generate "blackbox.yaml" blackboxConfig;
   };
 
   networking.firewall.allowedTCPPorts = [
@@ -419,6 +478,6 @@ in {
 
   services.loki = {
     enable = true;
-    configFile = (pkgs.formats.yaml {}).generate "loki.yaml" lokiConfig;
+    configFile = (pkgs.formats.yaml { }).generate "loki.yaml" lokiConfig;
   };
 }