tautulli: its config is placed, it runs the build in use, and its runtime finds its own key

The module stated /services/tautulli/config and /var/lib/mesh/tautulli/route.json,
novox's layout, which no definition may carry (ADR 0112). Tautulli's config dir is
now a placed directory (${dir:config}) and the route binds into the placed state
(${dir:state}), as searxng and mosquitto do.

The image was pinned to v2.18.1-ls242; ace runs ls244 (2026-09-11), and Tautulli
migrates its own database schema, so the pin moves to the digest ace runs.

The runtime called http://127.0.0.1:8181, which is the software's port, not the
machine port the mesh assigns; it now asks with ${port:8181}, as gitea does.

The runtime mounted Tautulli's config dir read-only but never read it: its API key
could only come from MESH_TAUTULLI_APIKEY or the settings-merged config.json, i.e.
a secret in settings. Tautulli mints and owns that key in its config.ini, so the
runtime now reads it from there. Nothing for the mesh to mint or accept.

Verified: catalogue tests with MESH_CATALOGUE pointing here (not skipped); the
pinned image started in a throwaway container on a dir owned 1001:2000 with
PUID/PGID 1000 answers /status 200 and re-owns /config to 1000:1000 on start;
client.ts, run under node, read the key from that instance's config.ini and got
success from get_activity and get_history; without a config.ini it throws, which
the tools and events entrypoints already treat as "not configured".

modules/ca-trust/module.json

@@ -0,0 +1,56 @@
+{
+  "module": "ca-trust",
+  "version": "1",
+  "slug": "catrust",
+  "capabilities": [
+    "service-manager"
+  ],
+  "requires": [
+    "internal-acme-ca"
+  ],
+  "seats": [
+    {
+      "name": "the-mesh-trust-anchor",
+      "scope": "node"
+    }
+  ],
+  "claims": [
+    {
+      "name": "the-mesh-trust-anchor",
+      "scope": "node"
+    }
+  ],
+  "resources": [
+    {
+      "id": "state",
+      "type": "directory",
+      "mode": "0700",
+      "place": "."
+    },
+    {
+      "id": "anchor",
+      "type": "file",
+      "path": "${dir:state}/anchor",
+      "mode": "0755",
+      "content": "#!/bin/sh\n# The mesh's internal certificate authority, trusted by this machine.\n#\n# Written by the mesh from the ca-trust module's manifest (novox/hq ADR 0147).\n# Editing it here lasts until the next apply.\n#\n# There is no prior trust to verify the fetch against \u2014 this is the thing that\n# establishes it \u2014 so it is made over the mesh's own private network, which is\n# what authenticates it (novox/hq ADR 0098, the same reasoning that lets the\n# route proxy fetch this root for itself). What comes back is checked here: a\n# body that is not a certificate is refused now, rather than believed and then\n# failed by whatever reads the trust store next.\nset -eu\n\nROOTS='https://${bound:internal-acme-ca:at}:${bound:internal-acme-ca:port}${bound:internal-acme-ca:roots}'\nANCHORS=/etc/ca-certificates/trust-source/anchors\nANCHOR=\"$ANCHORS/mesh-internal-ca.crt\"\n\n# Arch's layout, said out loud rather than assumed: a machine that keeps its\n# anchors elsewhere fails here, visibly, instead of writing a file nothing\n# reads. That failure is the signal that this belongs in the host, where one\n# operating system's difference lives (novox/hq ADR 0147, option 2).\n[ -d \"$ANCHORS\" ] || {\n\techo \"this machine keeps no trust anchors in $ANCHORS; ca-trust is written for that layout\" >&2\n\texit 1\n}\n\ncase \"${1:-}\" in\ninstall)\n\ttmp=$(mktemp)\n\ttrap 'rm -f \"$tmp\"' EXIT\n\t# The authority may still be starting, or this machine may have come up\n\t# before it: two minutes of asking, then an honest failure.\n\tn=0\n\twhile [ \"$n\" -lt 60 ]; do\n\t\tif curl --fail --silent --show-error --insecure --max-time 10 \\\n\t\t\t--output \"$tmp\" \"$ROOTS\" &&\n\t\t\tgrep -q 'BEGIN CERTIFICATE' \"$tmp\"; then\n\t\t\tinstall -m 0644 \"$tmp\" \"$ANCHOR\"\n\t\t\tupdate-ca-trust\n\t\t\texit 0\n\t\tfi\n\t\tn=$((n + 1))\n\t\tsleep 2\n\tdone\n\techo \"the authority at $ROOTS did not serve a certificate within two minutes\" >&2\n\texit 1\n\t;;\nremove)\n\t# What stopping the unit does, and therefore what being unassigned does.\n\trm -f \"$ANCHOR\"\n\tupdate-ca-trust\n\t;;\n*)\n\techo \"usage: $(basename \"$0\") install|remove\" >&2\n\texit 2\n\t;;\nesac\n"
+    },
+    {
+      "id": "unit",
+      "type": "file",
+      "path": "/etc/systemd/system/mesh-ca-trust.service",
+      "mode": "0644",
+      "content": "[Unit]\nDescription=The mesh's internal certificate authority, trusted by this machine\n# novox/hq ADR 0147. Starting this unit places the mesh's root among this\n# machine's trust anchors; stopping it takes the root away again, which is what\n# the host does when the module is no longer assigned here.\nWants=network-online.target\nAfter=network-online.target\n\n[Service]\nType=oneshot\nRemainAfterExit=yes\nExecStart=${dir:state}/anchor install\nExecStop=${dir:state}/anchor remove\n\n[Install]\nWantedBy=multi-user.target\n"
+    },
+    {
+      "id": "trust",
+      "type": "service",
+      "unit": "mesh-ca-trust.service",
+      "state": "running",
+      "boot": "enabled",
+      "restart-on": [
+        "anchor",
+        "unit"
+      ]
+    }
+  ]
+}

modules/searxng/module.json

@@ -5,7 +5,7 @@
     "container-runtime"
   ],
   "own-secrets": {
-    "secret": "/var/lib/searxng-module/secret.secret",
+    "secret": "/var/lib/mesh/searxng/secret",
     "broker": "/var/lib/mesh/searxng/broker"
   },
   "listens": [
@@ -27,22 +27,14 @@
     {
       "id": "state",
       "type": "directory",
-      "path": "/var/lib/searxng-module",
-      "mode": "0700"
+      "mode": "0700",
+      "place": "."
     },
     {
       "id": "valkey-data",
       "type": "directory",
-      "path": "/var/lib/searxng-module/valkey-data",
       "mode": "0700"
     },
-    {
-      "id": "server-env",
-      "type": "file",
-      "path": "/var/lib/searxng-module/server.env",
-      "mode": "0600",
-      "content": "SEARXNG_SECRET=${secret:secret}\nSEARXNG_VALKEY_URL=valkey://valkey:6379/0\n"
-    },
     {
       "id": "net",
       "type": "network",
@@ -63,30 +55,39 @@
         "warning"
       ],
       "volumes": [
-        "/var/lib/searxng-module/valkey-data:/data"
+        "${dir:valkey-data}:/data"
       ]
     },
+    {
+      "id": "settings",
+      "type": "file",
+      "path": "${dir:state}/settings.yml",
+      "mode": "0600",
+      "merge": "json",
+      "content": "{\n  \"use_default_settings\": true,\n  \"server\": {\n    \"secret_key\": \"${secret:secret}\",\n    \"base_url\": false,\n    \"limiter\": false,\n    \"image_proxy\": false,\n    \"public_instance\": false\n  },\n  \"search\": {\n    \"formats\": [\"html\", \"json\"]\n  },\n  \"valkey\": {\n    \"url\": \"valkey://valkey:6379/0\"\n  }\n}\n"
+    },
     {
       "id": "server",
       "type": "container",
       "name": "searxng",
-      "image": "searxng/searxng@sha256:c7cc75852051bf6254afda6ed1b920dd1677d8efe4ab141bf558f02e582f4371",
+      "image": "searxng/searxng@sha256:cd8812607ab73730a0b1a0dc4990223fe1b9e383f6f35947114d0bef7f8bb441",
       "network": "searxng",
-      "env-file": [
-        "/var/lib/searxng-module/server.env"
-      ],
       "ports": [
         "8080"
       ],
-      "secrets-in-environment": "SEARXNG_SECRET is env-only, but settings.yml carries server.secret_key; convertible by mounting a generated settings.yml, not yet done"
+      "volumes": [
+        "${dir:state}/settings.yml:/etc/searxng/settings.yml:ro"
+      ],
+      "restart-on": [
+        "settings"
+      ]
     },
     {
       "id": "runtime-config",
       "type": "file",
       "path": "/var/lib/mesh/searxng/config.json",
       "mode": "0600",
-      "content": "{}\n",
-      "merge": "json"
+      "content": "{}\n"
     },
     {
       "id": "runtime",
@@ -118,7 +119,7 @@
     }
   },
   "binds": {
-    "route": "/var/lib/searxng-module/route.json"
+    "route": "${dir:state}/route.json"
   },
   "build": {
     "on": [

modules/tautulli/client.ts

@@ -41,6 +41,32 @@ function meshConfig(file?: string): Record<string, string> {
   catch { return {}; }
 }
 
+/**
+ * The API key Tautulli minted for itself, read from its own config.ini (mounted read-only).
+ *
+ * Tautulli owns this key: it writes it on first run and every client of its API — this runtime
+ * included — must present the same one. So the mesh does not mint or hold it; the one place it
+ * lives is the file Tautulli keeps, and a key regenerated in Tautulli's settings is simply read
+ * again on the next start. Undefined when there is no file or no key yet (a fresh install whose
+ * setup wizard has not run).
+ */
+function keyOfTautulli(dir?: string): string | undefined {
+  if (!dir) return undefined;
+  let ini: string;
+  try { ini = readFileSync(`${dir.replace(/\/$/, "")}/config.ini`, "utf8"); }
+  catch { return undefined; }
+  let section = "";
+  for (const raw of ini.split(/\r?\n/)) {
+    const line = raw.trim();
+    const header = /^\[(.+)\]$/.exec(line);
+    if (header) { section = header[1]; continue; }
+    if (section !== "General") continue;
+    const kv = /^api_key\s*=\s*"?([^"]*)"?$/.exec(line);
+    if (kv && kv[1]) return kv[1];
+  }
+  return undefined;
+}
+
 export class TautulliClient {
   readonly baseUrl: string;
 
@@ -52,15 +78,16 @@ export class TautulliClient {
   }
 
   /**
-   * Build from the module's resolved environment. The API key is read from MESH_TAUTULLI_APIKEY
-   * (Tautulli mints it in Settings → Web Interface); the base URL defaults to the local container.
+   * Build from the module's resolved environment. The API key is the one Tautulli minted for
+   * itself (Settings → Web Interface), read from its config.ini under MESH_TAUTULLI_CONFIG_DIR;
+   * MESH_TAUTULLI_APIKEY still wins where it is set. The base URL defaults to the local container.
    * Throws when no key is configured — the module then contributes nothing rather than failing.
    */
   static fromEnv(env: NodeJS.ProcessEnv = process.env): TautulliClient {
     const cfg = meshConfig(env.MESH_TAUTULLI_CONFIG_FILE);
     const url = cfg.url ?? (env.MESH_TAUTULLI_URL ?? `http://127.0.0.1:${env.TAUTULLI_PORT ?? "8181"}`);
-    const apiKey = cfg.apiKey ?? env.MESH_TAUTULLI_APIKEY;
-    if (!apiKey) throw new Error("no Tautulli API key — set MESH_TAUTULLI_APIKEY");
+    const apiKey = cfg.apiKey ?? env.MESH_TAUTULLI_APIKEY ?? keyOfTautulli(env.MESH_TAUTULLI_CONFIG_DIR);
+    if (!apiKey) throw new Error("no Tautulli API key — Tautulli's config.ini has none yet (finish its setup and enable the API)");
     return new TautulliClient(url, apiKey);
   }
 

modules/tautulli/module.json

@@ -16,7 +16,7 @@
       "port": 8181,
       "protocol": "tcp",
       "from": "mesh",
-      "why": "watch statistics"
+      "why": "the watch statistics pages and API"
     }
   ],
   "resources": [
@@ -26,10 +26,15 @@
       "path": "/var/lib/mesh/tautulli",
       "mode": "0700"
     },
+    {
+      "id": "state",
+      "type": "directory",
+      "mode": "0700",
+      "place": "."
+    },
     {
       "id": "config",
       "type": "directory",
-      "path": "/services/tautulli/config",
       "mode": "0700",
       "owner": "1000:1000"
     },
@@ -37,7 +42,7 @@
       "id": "server",
       "type": "container",
       "name": "tautulli",
-      "image": "lscr.io/linuxserver/tautulli@sha256:13f03ecfc61a7af89d492677389771ac29682a72153ce08a5cd4faffbc0197e8",
+      "image": "lscr.io/linuxserver/tautulli@sha256:e35570d636471f8aabfac7044057712679f954844a763ba735baa9659ea142b5",
       "env": {
         "PUID": "1000",
         "PGID": "1000",
@@ -47,7 +52,7 @@
         "8181"
       ],
       "volumes": [
-        "/services/tautulli/config:/config"
+        "${dir:config}:/config"
       ]
     },
     {
@@ -66,11 +71,11 @@
       "volumes": [
         "/var/lib/mesh/tautulli/broker:/run/secrets/broker:ro",
         "/var/lib/mesh/tautulli/config.json:/run/config/config.json:ro",
-        "/services/tautulli/config:/var/lib/tautulli/config:ro"
+        "${dir:config}:/var/lib/tautulli/config:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",
-        "MESH_TAUTULLI_URL": "http://127.0.0.1:8181",
+        "MESH_TAUTULLI_URL": "http://127.0.0.1:${port:8181}",
         "MESH_TAUTULLI_CONFIG_FILE": "/run/config/config.json",
         "MESH_TAUTULLI_CONFIG_DIR": "/var/lib/tautulli/config"
       },
@@ -90,7 +95,7 @@
     }
   },
   "binds": {
-    "route": "/var/lib/mesh/tautulli/route.json"
+    "route": "${dir:state}/route.json"
   },
   "build": {
     "on": [