WordPress Architecture

Compose 🐳

flowchart LR
    subgraph role [web-app-wordpress]
        svc_wordpress["wordpress<br>wordpress:7.1.4<br>http 80"]
    end

Swarm 🐝

flowchart LR
    svc_wordpress["wordpress"]
    svc_wordpress --> rep_wordpress["replicas: from the host group"]
    classDef pinned fill:#fef7e0,stroke:#b06000,color:#3d2600;

Volumes

flowchart LR
    vol_data["wordpress_data"]
    vol_data -->|"swarm + storage.backend nfs"| nfs_data["shared over NFS"]:::shared
    vol_data -->|"compose, or backend local"| cl_data["node-local"]:::local
    classDef shared fill:#e6f4ea,stroke:#137333,color:#0b2e13;
    classDef local fill:#fef7e0,stroke:#b06000,color:#3d2600;

Condition	Effect
swarm, storage.backend: nfs, no nfs: false, role not pinned	shared over NFS
any one of those missing	node-local

All four conditions must hold, so pinning a role takes every one of its volumes node-local. Only the role’s primary entry counts as pinned here: a placement on any other service pins that service alone and leaves the backing of every volume unchanged. The chain is drawn rather than its result, because that coupling is what makes a placement change move data without saying so.

Dependencies

flowchart LR
    subgraph deps [Dependencies]
        dep_svc_ai_litellm["svc-ai-litellm 🐳🐝"]
        dep_svc_bkp_volume_2_local["svc-bkp-volume-2-local 💻"]
        dep_svc_db_mariadb["svc-db-mariadb 🐳🐝"]
        dep_svc_net_tor["svc-net-tor 🐳🐝"]
        dep_web_app_bigbluebutton["web-app-bigbluebutton 🐳🐝"]
        dep_web_app_dashboard["web-app-dashboard 🐳🐝"]
        dep_web_app_discourse["web-app-discourse 🐳🐝"]
        dep_web_app_docs["web-app-docs 🐳🐝"]
        dep_web_app_hermes["web-app-hermes 🐳🐝"]
        dep_web_app_keycloak["web-app-keycloak 🐳🐝"]
        dep_web_app_listmonk["web-app-listmonk 🐳🐝"]
        dep_web_app_matomo["web-app-matomo 🐳🐝"]
        dep_web_app_openclaw["web-app-openclaw 🐳🐝"]
        dep_web_app_peertube["web-app-peertube 🐳🐝"]
        dep_web_app_prometheus["web-app-prometheus 🐳🐝"]
        dep_web_app_stalwart["web-app-stalwart 🐳🐝"]
        dep_web_svc_design["web-svc-design 💻"]
        dep_web_svc_logout["web-svc-logout 🐳🐝"]
        dep_web_svc_seaweedfs["web-svc-seaweedfs 🐳🐝"]
        dep_web_svc_translate["web-svc-translate 🐳🐝"]
    end
    subgraph role [web-app-wordpress 🐳🐝]
        svc_litellm["litellm"]
        svc_sso["sso"]
        svc_logout["logout"]
        svc_dashboard["dashboard"]
        svc_matomo["matomo"]
        svc_email["email"]
        svc_mariadb["mariadb"]
        svc_discourse["discourse"]
        svc_bigbluebutton["bigbluebutton"]
        svc_listmonk["listmonk"]
        svc_peertube["peertube"]
        svc_translate["translate"]
        svc_wordpress["wordpress"]
        svc_seaweedfs["seaweedfs"]
        svc_design["design"]
        svc_prometheus["prometheus"]
        svc_tor["tor"]
        svc_container_backup["container_backup"]
        svc_openwebui["openwebui ❌"]
        svc_hermes["hermes"]
        svc_openclaw["openclaw"]
        svc_flowise["flowise ❌"]
        svc_docs["docs"]
    end
    dep_svc_ai_litellm -. "0..1" .-> svc_litellm
    dep_svc_bkp_volume_2_local -. "0..1" .-> svc_container_backup
    dep_svc_db_mariadb -. "0..1" .-> svc_mariadb
    dep_svc_net_tor -. "0..1" .-> svc_tor
    dep_web_app_bigbluebutton -. "0..1" .-> svc_bigbluebutton
    dep_web_app_dashboard -. "0..1" .-> svc_dashboard
    dep_web_app_discourse -. "0..1" .-> svc_discourse
    dep_web_app_docs -. "0..1" .-> svc_docs
    dep_web_app_hermes -. "0..1" .-> svc_hermes
    dep_web_app_keycloak -. "0..1" .-> svc_sso
    dep_web_app_listmonk -. "0..1" .-> svc_listmonk
    dep_web_app_matomo -. "0..1" .-> svc_matomo
    dep_web_app_openclaw -. "0..1" .-> svc_openclaw
    dep_web_app_peertube -. "0..1" .-> svc_peertube
    dep_web_app_prometheus -. "0..1" .-> svc_prometheus
    dep_web_app_stalwart -. "0..1" .-> svc_email
    dep_web_svc_design -. "0..1" .-> svc_design
    dep_web_svc_logout -. "0..1" .-> svc_logout
    dep_web_svc_seaweedfs -. "0..1" .-> svc_seaweedfs
    dep_web_svc_translate -. "0..1" .-> svc_translate

Symbol	Meaning
1:1 solid	fixed relationship
0..1 dashed	conditional, enabled only in matching deployments
0..0 red	declared but turned off in this role
💻	deploys to the host
🐳	deploys under compose
🐝	deploys under swarm
❌	service explicitly turned off
⚙️	Ansible role dependency from meta/main.yml

Every dependency and dependent is listed; the graph is not truncated.