feat: wip: add container backend to guests

hosts/ward/guests/influxdb.nix

@@ -0,0 +1,92 @@
+{
+  config,
+  lib,
+  nodes,
+  pkgs,
+  ...
+}: let
+  sentinelCfg = nodes.sentinel.config;
+  influxdbDomain = "influxdb.${sentinelCfg.repo.secrets.local.personalDomain}";
+  influxdbPort = 8086;
+in {
+  meta.wireguard-proxy.sentinel.allowedTCPPorts = [influxdbPort];
+
+  nodes.sentinel = {
+    networking.providedDomains.influxdb = influxdbDomain;
+
+    services.nginx = {
+      upstreams.influxdb = {
+        servers."${config.meta.wireguard.proxy-sentinel.ipv4}:${toString influxdbPort}" = {};
+        extraConfig = ''
+          zone influxdb 64k;
+          keepalive 2;
+        '';
+      };
+      virtualHosts.${influxdbDomain} = let
+        accessRules = ''
+          satisfy any;
+          ${lib.concatMapStrings (ip: "allow ${ip};\n") sentinelCfg.meta.wireguard.proxy-sentinel.server.reservedAddresses}
+          deny all;
+        '';
+      in {
+        forceSSL = true;
+        useACMEWildcardHost = true;
+        oauth2.enable = true;
+        oauth2.allowedGroups = ["access_influxdb"];
+        locations."/" = {
+          proxyPass = "http://influxdb";
+          proxyWebsockets = true;
+          extraConfig = accessRules;
+        };
+        locations."/api/v2/write" = {
+          proxyPass = "http://influxdb/api/v2/write";
+          proxyWebsockets = true;
+          extraConfig = ''
+            ${accessRules}
+            access_log off;
+          '';
+        };
+      };
+    };
+  };
+
+  age.secrets.influxdb-admin-password = {
+    generator.script = "alnum";
+    mode = "440";
+    group = "influxdb2";
+  };
+
+  age.secrets.influxdb-admin-token = {
+    generator.script = "alnum";
+    mode = "440";
+    group = "influxdb2";
+  };
+
+  age.secrets.influxdb-user-telegraf-token = {
+    generator.script = "alnum";
+    mode = "440";
+    group = "influxdb2";
+  };
+
+  services.influxdb2 = {
+    enable = true;
+    settings = {
+      reporting-disabled = true;
+      http-bind-address = "0.0.0.0:${toString influxdbPort}";
+    };
+    provision = {
+      enable = true;
+      initialSetup = {
+        organization = "default";
+        bucket = "default";
+        passwordFile = config.age.secrets.influxdb-admin-password.path;
+        tokenFile = config.age.secrets.influxdb-admin-token.path;
+      };
+      organizations.servers.buckets.telegraf = {};
+    };
+  };
+
+  environment.systemPackages = [pkgs.influxdb2-cli];
+
+  systemd.services.grafana.serviceConfig.RestartSec = "600"; # Retry every 10 minutes
+}