Scaffold core Swarm stacks: Traefik v3, PostgreSQL primary, MariaDB 10.11 primary, Redis master, Mosquitto, Netdata; add secrets/env inventory and DB replication guidance to migration TODO

stacks/core/mosquitto.yml

@@ -0,0 +1,32 @@
+version: '3.9'
+
+services:
+  mosquitto:
+    image: eclipse-mosquitto:2
+    volumes:
+      - mosquitto_conf:/mosquitto/config
+      - mosquitto_data:/mosquitto/data
+      - mosquitto_log:/mosquitto/log
+    networks:
+      - traefik-public
+    ports:
+      - target: 1883
+        published: 1883
+        mode: host
+    deploy:
+      replicas: 1
+      placement:
+        constraints:
+          - "node.labels.role==core"
+
+volumes:
+  mosquitto_conf:
+    driver: local
+  mosquitto_data:
+    driver: local
+  mosquitto_log:
+    driver: local
+
+networks:
+  traefik-public:
+    external: true