Files
computer-playbook/roles/svc-db-postgres
kevinveenbirkenbachandClaude Opus 5.5 94ed66f1e3 fix(security): stop ansible.builtin.command from expanding $VARs in argv scripts
8ab950f13c hands the postgres, MediaWiki and XWiki scripts to bash -c as argv text, and ansible.builtin.command runs os.path.expandvars over every argv item unless expand_argument_vars is false. Any $NAME that also exists in the task environment was replaced before bash ran: with container=docker set in the dev container, set_postgres_superuser_password.sh targeted a container named docker and retried its outer loop until the deploy hung. The four argv tasks now pass expand_argument_vars: false.

Verified through Ansible replicas: postgres rc=0 with every exec on the right container and 0 ps -ww hits, MediaWiki 1.46 installed with 0 ps -ww hits, the XWiki hash matches; a live deploy reports [UNCHANGED] for the shared postgres.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-28 16:53:39 +01:00
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PostgreSQL

Description

This Ansible role deploys and configures a PostgreSQL database in a Docker container using Docker Compose. It is designed to simplify database administration by automating the creation of networks, containers, and essential database tasks (such as database and user creation) for a secure and high-performance environment.

Overview

Built for environments that demand reliability and ease of management, this role:

  • Sets up a dedicated Docker network for PostgreSQL.
  • Deploys a PostgreSQL container with secure configurations and automated healthchecks.
  • Automates tasks like database creation, user setup, and privilege assignments to streamline your workflows.

Cosmos

The diagram places PostgreSQL in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph deps [Dependencies]
        dep_svc_bkp_volume_2_local["svc-bkp-volume-2-local 💻"]
        dep_svc_net_tor["svc-net-tor 🐳🐝"]
    end
    subgraph role [svc-db-postgres 🐳🐝]
        svc_postgres["postgres"]
        svc_tor["tor"]
        svc_container_backup["container_backup"]
    end
    subgraph dependents [Dependents]
        dpt_svc_ai_litellm["svc-ai-litellm 🐳🐝"]
        dpt_web_app_baserow["web-app-baserow 🐳🐝"]
        dpt_web_app_bookwyrm["web-app-bookwyrm 🐳🐝"]
        dpt_web_app_chess["web-app-chess 🐳🐝"]
        dpt_web_app_confluence["web-app-confluence 🐳🐝"]
        dpt_web_app_decidim["web-app-decidim 🐳🐝"]
        dpt_web_app_discourse["web-app-discourse 🐳🐝"]
        dpt_web_app_fider["web-app-fider 🐳🐝"]
        dpt_web_app_flowise["web-app-flowise 🐳🐝"]
        dpt_web_app_funkwhale["web-app-funkwhale 🐳🐝"]
        dpt_web_app_gitlab["web-app-gitlab 🐳🐝"]
        dpt_web_app_jira["web-app-jira 🐳🐝"]
        dpt_more["..."]
    end
    dep_svc_bkp_volume_2_local -. "0..1" .-> svc_container_backup
    dep_svc_net_tor -. "0..1" .-> svc_tor
    svc_postgres -- "1:1" --> dpt_more
    svc_postgres -. "0..1" .-> dpt_svc_ai_litellm
    svc_postgres -. "0..1" .-> dpt_web_app_baserow
    svc_postgres -. "0..1" .-> dpt_web_app_bookwyrm
    svc_postgres -. "0..1" .-> dpt_web_app_chess
    svc_postgres -. "0..1" .-> dpt_web_app_confluence
    svc_postgres -. "0..1" .-> dpt_web_app_decidim
    svc_postgres -. "0..1" .-> dpt_web_app_discourse
    svc_postgres -. "0..1" .-> dpt_web_app_fider
    svc_postgres -. "0..1" .-> dpt_web_app_flowise
    svc_postgres -. "0..1" .-> dpt_web_app_funkwhale
    svc_postgres -. "0..1" .-> dpt_web_app_gitlab
    svc_postgres -. "0..1" .-> dpt_web_app_jira

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role's deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Purpose

The purpose of this role is to provide an effortless way to deploy a PostgreSQL database via Docker. It minimizes manual interventions while ensuring that your database is configured securely and reliably for both production and development scenarios.

Features

  • Automated Deployment: Installs PostgreSQL with minimal manual steps.
  • Robust Administration: Automatically creates databases, users, and assigns privileges.
  • Enhanced Security: The service is bound to 127.0.0.1:5432, restricting access and enhancing security.
  • Seamless Docker Integration: Works harmoniously with Docker Compose and other roles in your infrastructure.
  • Automatic Major Upgrades: Detects an older cluster in the data volume and upgrades it major by major with pg_upgrade --link, see Upgrade.md.

Quick Setup

Development

Clone, set up the workstation, and deploy PostgreSQL onto the local stack:

git clone https://github.com/infinito-nexus/core.git
cd core
make onboard
make compose-deploy mode=reinstall apps=svc-db-postgres full_cycle=false

Production

Run the published image to provision the inventory and deploy PostgreSQL to a managed server (the mounted volume persists the inventory):

APP=svc-db-postgres
HOST=<your-server>
DOMAIN=<your-domain>
TLS_MODE=self_signed
SSH_PUBLIC_KEY="<your-ssh-public-key>"

docker run --rm -it \
  -v "$PWD/inventories:/etc/infinito.nexus/inventories" \
  -e APP="$APP" -e HOST="$HOST" -e DOMAIN="$DOMAIN" -e TLS_MODE="$TLS_MODE" -e SSH_PUBLIC_KEY="$SSH_PUBLIC_KEY" \
  ghcr.io/infinito-nexus/core/debian bash -c '
    INVENTORY=/etc/infinito.nexus/inventories/production
    infinito administration inventory provision "$INVENTORY" \
      --inventory-file "$INVENTORY/devices.yml" \
      --host "$HOST" \
      --include "$APP" \
      --vars "{\"TLS_MODE\": \"$TLS_MODE\", \"DOMAIN_PRIMARY\": \"$DOMAIN\", \"users\": {\"administrator\": {\"authorized_keys\": [\"$SSH_PUBLIC_KEY\"]}}}" &&
    infinito administration deploy dedicated "$INVENTORY/devices.yml" \
      --password-file "$INVENTORY/.password" \
      --diff -vv'

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).