From 1830ab192c08866ecac9509091659dd2313beee1 Mon Sep 17 00:00:00 2001 From: xinyangli Date: Tue, 30 Jul 2024 17:03:27 +0800 Subject: [PATCH] feat: enable tailscale on servers --- modules/nixos/prometheus.nix | 278 ++++++++--------------------------- 1 file changed, 64 insertions(+), 214 deletions(-) diff --git a/modules/nixos/prometheus.nix b/modules/nixos/prometheus.nix index b4a02cc..9ddd255 100644 --- a/modules/nixos/prometheus.nix +++ b/modules/nixos/prometheus.nix @@ -25,221 +25,71 @@ in }; }; - config = mkIf cfg.enable (mkMerge [ - { - services.tailscale = { - enable = true; - permitCertUid = config.services.caddy.user; - }; - - services.caddy = { - enable = true; - virtualHosts."${config.networking.hostName}.coho-tet.ts.net".extraConfig = '' - reverse_proxy 127.0.0.1:${toString config.services.prometheus.port} - ''; - }; - - services.caddy.globalConfig = '' - servers { - metrics + config = mkIf cfg.enable (mkMerge [{ + services.caddy.globalConfig = '' + servers { + metrics + } + ''; + services.restic.server.prometheus = cfg.enable; + services.gotosocial.settings = { + metrics-enable = true; + }; + services.prometheus = mkIf cfg.enable { + enable = true; + port = 9091; + globalConfig.external_labels = { hostname = config.networking.hostName; }; + remoteWrite = mkIf cfg.grafana.enable [ + { name = "grafana"; + url = "https://prometheus-prod-24-prod-eu-west-2.grafana.net/api/prom/push"; + basic_auth = { + username = "1340065"; + password_file = cfg.grafana.password_file; + }; } - ''; - services.restic.server.prometheus = cfg.enable; - services.gotosocial.settings = mkIf cfg.enable { - metrics-enabled = true; - }; - services.ntfy-sh.settings.enable-metrics = true; - - services.prometheus = mkIf cfg.enable - { - enable = true; - port = 9091; - globalConfig.external_labels = { hostname = config.networking.hostName; }; - remoteWrite = mkIf cfg.grafana.enable [ - { - name = "grafana"; - url = "https://prometheus-prod-24-prod-eu-west-2.grafana.net/api/prom/push"; - basic_auth = { - username = "1340065"; - password_file = cfg.grafana.password_file; - }; - } - ]; - exporters = { - node = { - enable = true; - enabledCollectors = [ - "conntrack" - "diskstats" - "entropy" - "filefd" - "filesystem" - "loadavg" - "meminfo" - "netdev" - "netstat" - "stat" - "time" - "vmstat" - "systemd" - "logind" - "interrupts" - "ksmd" - ]; - port = 9100; - }; - }; - scrapeConfigs = [ - { - job_name = "prometheus"; - static_configs = [ - { targets = [ "localhost:${toString config.services.prometheus.port}" ]; } - ]; - } - { - job_name = "node"; - static_configs = [ - { targets = [ "localhost:${toString config.services.prometheus.exporters.node.port}" ]; } - ]; - } - ]; - - alertmanager = { - enable = true; - listenAddress = "127.0.0.1"; - logLevel = "debug"; - configuration = { - route = { - receiver = "ntfy"; - }; - receivers = [ - { - name = "ntfy"; - webhook_configs = [ - { - url = "https://ntfy.xinyang.life/prometheus-alerts?tpl=yes&m=${lib.escapeURL '' - Alert {{.status}} - {{range .alerts}}-----{{range $k,$v := .labels}} - {{$k}}={{$v}}{{end}} - {{end}} - ''}"; - send_resolved = true; - } - ]; - } - ]; - }; - }; - - alertmanagers = [ - { - scheme = "http"; - static_configs = [ - { - targets = [ - "${config.services.prometheus.alertmanager.listenAddress}:${toString config.services.prometheus.alertmanager.port}" - ]; - } - ]; - } - ]; - - rules = let mkRule = condition: { ... }@rule: (if condition then [ rule ] else [ ]); in [ - (lib.generators.toYAML { } { - groups = (mkRule true - { - name = "system_alerts"; - rules = [ - { - alert = "SystemdFailedUnits"; - expr = "node_systemd_unit_state{state=\"failed\"} > 0"; - for = "5m"; - labels = { severity = "critical"; }; - annotations = { summary = "Systemd has failed units on {{ $labels.instance }}"; description = "There are {{ $value }} failed units on {{ $labels.instance }}. Immediate attention required!"; }; - } - { - alert = "HighLoadAverage"; - expr = "node_load1 > 0.8 * count without (cpu) (node_cpu_seconds_total{mode=\"idle\"})"; - for = "1m"; - labels = { severity = "warning"; }; - annotations = { summary = "High load average detected on {{ $labels.instance }}"; description = "The 1-minute load average ({{ $value }}) exceeds 80% the number of CPUs."; }; - } - { - alert = "HighTransmitTraffic"; - expr = "rate(node_network_transmit_bytes_total{device!=\"lo\"}[5m]) > 100000000"; - for = "1m"; - labels = { severity = "warning"; }; - annotations = { summary = "High network transmit traffic on {{ $labels.instance }} ({{ $labels.device }})"; description = "The network interface {{ $labels.device }} on {{ $labels.instance }} is transmitting data at a rate exceeding 100 MB/s for the last 1 minute."; }; - } - ]; - }) ++ (mkRule config.services.restic.server.enable { - name = "restic_alerts"; - rules = [ - { - alert = "ResticCheckFailed"; - expr = "restic_check_success == 0"; - for = "5m"; - labels = { severity = "critical"; }; - annotations = { summary = "Restic check failed (instance {{ $labels.instance }})"; description = "Restic check failed\\n VALUE = {{ $value }}\\n LABELS = {{ $labels }}"; }; - } - { - alert = "ResticOutdatedBackup"; - expr = "time() - restic_backup_timestamp > 518400"; - for = "0m"; - labels = { severity = "critical"; }; - annotations = { summary = "Restic {{ $labels.client_hostname }} / {{ $labels.client_username }} backup is outdated"; description = "Restic backup is outdated\\n VALUE = {{ $value }}\\n LABELS = {{ $labels }}"; }; - } - ]; - }) ++ (mkRule config.services.caddy.enable { - name = "caddy_alerts"; - rules = [ - { - alert = "UpstreamHealthy"; - expr = "caddy_reverse_proxy_upstreams_healthy == 0"; - for = "5m"; - labels = { severity = "critical"; }; - annotations = { summary = "Upstream {{ $labels.unstream }} not healthy"; }; - } - { - alert = "HighRequestLatency"; - expr = "histogram_quantile(0.95, rate(caddy_http_request_duration_seconds_bucket[10m])) > 0.5"; - for = "2m"; - labels = { severity = "warning"; }; - annotations = { summary = "High request latency on {{ $labels.instance }}"; description = "95th percentile of request latency is above 0.5 seconds for the last 2 minutes."; }; - } - ]; - }); - }) - ]; - }; - } - { - services.prometheus.scrapeConfigs = [ - (mkIf config.services.caddy.enable { - job_name = "caddy"; - static_configs = [ - { targets = [ "localhost:2019" ]; } - ]; - }) - (mkIf config.services.restic.server.enable { - job_name = "restic"; - static_configs = [ - { targets = [ config.services.restic.server.listenAddress ]; } - ]; - }) - (mkIf config.services.gotosocial.enable { - job_name = "gotosocial"; - static_configs = [ - { targets = [ "localhost:${toString config.services.gotosocial.settings.port}" ]; } - ]; - }) - (mkIf config.services.ntfy-sh.enable { - job_name = "ntfy-sh"; - static_configs = [ - { targets = [ "auth.xinyang.life" ]; } - ]; - }) ]; - } + exporters = { + node = { + enable = true; + enabledCollectors = [ "systemd" ]; + port = 9100; + }; + }; + scrapeConfigs = [ + { job_name = "prometheus"; + static_configs = [ + { targets = [ "localhost:${toString config.services.prometheus.port}" ]; } + ]; + } + { job_name = "node"; + static_configs = [ + { targets = [ "localhost:${toString config.services.prometheus.exporters.node.port}" ]; } + ]; + } + ]; + }; + } + { + services.prometheus.scrapeConfigs = [ + ( mkIf config.services.caddy.enable { + job_name = "caddy"; + static_configs = [ + { targets = [ "localhost:2019" ]; } + ]; + }) + ( mkIf config.services.restic.server.enable { + job_name = "restic"; + static_configs = [ + { targets = [ config.services.restic.server.listenAddress ]; } + ]; + }) + ( mkIf config.services.gotosocial.enable { + job_name = "gotosocial"; + static_configs = [ + { targets = [ "localhost:${toString config.services.gotosocial.settings.port}" ]; } + ]; + }) + ]; + } ]); }